Item Botanical Name Purity Germ Hard Dorm Origin Origin Green Bulrush ; 3. Previous Next. spp. Softstem bulrush is generally found in shallow waters or along muddy banks. $1. Beaver dams in nearby streams cause major changes to soils and vegetation. Scirpus validus, PA Ecotype Softstem Bulrush, PA Ecotype Rhizomatous species; provides spawning grounds for fish in shallow water; source of food for waterfowl and muskrats. Dark green, slightly curved, spongy stems grow up to 2. It can. Native Wetland Plants. Habitat: Marshes, streams, ponds, and lakeshores . 잎. the spectrum. Some marshes may have mudflats dominated by forbs and low vegetation in patches among the graminoids; many have a very narrow band of low forbs near the high tide/upland interface. $2. 5% Scirpus a 0. 1% Aster puniceus, PA Ecotype (Purplestem Aster, PA Ecotype) 0. 106 It has been reported at elevations up to 4000 feet (1200 m). University of Florida, IFAS. Softstem bulrush and pickerelweed, two obligate wetland plants. 5-11 cm long. ) tall and survive in marshes, bogs, sand, or gravel bars. ) as the biosorbent. Schoenoplectus tabernaemontani. pH conditions. ) and softstem bulrush (SB, Schoenoplectus tabernaemontani) over time in microcosms flushed with water obtained from a nearby urban retention pond in northern Virginia near Washington, DC. and Echinochloa crus-galli, was operated for dairy wastewater treatment. 30 % Scirpus atrovirens, PA Ecotype Green Bulrush, PA Ecotype 144. 5% Scirpus c! General PrFactors affecting growth of softstem bulrush (Scirpus validus), an obligate wetland plant frequently used in subsurface-flow constructed wetlands in North America, were studied in a controlled environmental chamber. creber (Fernald) Beetle. paludosus (Synonyms: Bolboschoenus maritimus, Scirpus maritimus, Scirpus maritimus var. Scirpus validus) is a species of flowering plant in the sedge family known by the common names softstem bulrush and great bulrush. Scirpus pungens, Scirpus americanus, Schoenoplectus americanus. The spikelets are a light reddish brown, compact, and. Bulrushes: Scirpus, Schoenoplectus, Bulboschoenus species Number of results: 19 Bolboschoenus fluviatilisRiver Bulrush; Bolboschoenus maritimusPrairie Bulrush. Schoenoplectus heterochaetus × Schoenoplectus tabernaemontani → Schoenoplectus ×steinmetzii (Fern. 5-1 m deep) 2013 Price List - Ernst Conservation Seeds Threatened: Listed as Threatened Plants in the Preservation of Native Flora of Florida Act. Pittsburgh, PA: University of Pittsburgh. TSN: 507797. A classic wetland plant, large colonies can be seen in wet environments and even in shallow standing water. Clear dominance of great bulrush (Schoenoplectus tabernaemontani), and/or great bulrush (Schoenoplectus acutus) Found in a variety of wetland settings, most commonly in quiet-water areas along the shores of ponds, lakes, rivers, and larger streams, but also in flooded basins and ditches. Hard-stemmed bulrush is identifiable by the number of spikelets and scales on the fruit the plant produces. Hardstem bulrush can grow in areas where the water table is up to 5 feet (1. Southern bulrush is a bulrush sedge from knotty rhizomes; stems to 10 ft. 30 % Scirpus atrovirens, PA Ecotype Green Bulrush, PA Ecotype 144. 20 0. Propagule Processing: Without further drying the plant material, I loosen seeds from fruit clusters using a brush machine (Westrup a/s Slagelse, Denmark) and sieve seeds through a 1/13. $2. 30 % Scirpus atrovirens, PA Ecotype Green Bulrush, PA Ecotype 144. Aquascapes Unlimited’s seed sown local ecotype species add natural wildlife benefits, promote biodiversity, and oftentimes require less maintenance in terms of fertilizers and pesticides. Great bulrush in the foreground of a wet landscape. The effects of various parameters incl. September 8, 2012. This perennial herb needs. PA Valley & Ridge Province FACW Mix ERNMX-231 $ 61. We recommend that local ecotype seeds (i. Offering forums, vocabulary trainer and language courses. 0 to 2 foot. The flowers are arranged in a spikelet and resemble orange-brown scales. Of the 340 plants, 38 (11%) died during the experiment (Table 2). is a very rare bulrush . Schoenoplectus tabernaemontani (syn. 11 kg/ha. G. ) Palla - Showing 1 to 25. Aesthetic considerations were another reason of choosing pickerelweed because our research focuses on FTW application in urban retention ponds; pickerelweed is a flowering plant. Ripening dates for softstem bulrush seeds vary from early August through mid October and I harvest them by pulling or cutting the fruit clusters from the stem. 30 % Scirpus atrovirens, PA Ecotype Green Bulrush, PA Ecotype 144. Effects of media depth (30- and 46-cm), hydraulic retention time (HRT) (2- and 6-day), and water-level drawdown (drawdown vs. Native Americans used the leaves and stalks to weave mats, baskets and bags, and they ate the roots, young shoots, and seed. Production Genetic . S. interspersed channels or pools of open water. A stand entirely comprised of invasive hybrid cattail in Voyageurs National Park, MN, USA. 15% OFF orders of 6 or more flats of any species from Pizzo Native Plant Nursery. Listed Status: US. The macrophytes growing in constructed wetlands have several properties in relation to the treatment process that make them an essential component of the design. Clear dominance of great bulrush (Schoenoplectus tabernaemontani), and/or great bulrush (Schoenoplectus acutus) Found in a variety of wetland settings, most commonly in quiet-water areas along the shores of ponds, lakes, rivers, and larger streams, but also in flooded basins and ditches. Press the seed into the surface of the soil, compacting the soil very firmly. North Creek Nurseries , PA: 50-count deep plugs, full flat (50 plugs) $181. pallens. Inflorescence usually open with small clusters of spikelets on tips of spreading to erect peduncles. siu. Trees and Shrubs With Catkins. Summary 7 Schoenoplectus tabernaemontani (syn. 99. cyperinus [Woolgrass] Juncaceae [Rush family] Juncus [Rush] J. 00% . It can be found throughout much of the world; it has been reported from every state in the. Bulrush (S. 5% Alisma subcordatum, PA Ecotype (Mud Plantain, PA Ecotype) 0. POACEAE: GRASSES • Floret: the highly reduced flower of grasses • Spikelet: a small spike with reduced flowers on a central axis • Pedicel: the stalk of the spikelet • Glumes: the sterile, scale-like leaves at the base of a grass spikelet • Lemmas: the lowermost, scale-like leaves at the base of a grass floret • Ligule: in grasses, a papery, hairy or membrane-like. Removal efficiency of total nitrogen (TN) loads improved from 60. Effects of media depth (30-and 46-cm), hydraulic retention time (HRT) (2- and 6-day), and water-level drawdown (drawdown vs. Note the reddish brown spikeles in the inflorescence t and the thick stems which can be. A. RESULTS: The sorption capacity. A total of 140 of the 340, or 41%, of the plants flowered before they were harvested; 73% of the plants in the Low treatment flowered, and all taxa. 00 0. Scirpus polyphyllus. Data. Scirpus tabermontanii, Soft Stem Bulrush, is a rhizomatous species that forms dense colonies and provides excellent cover for waterfowl and spawning fish. ) Yan Li, Jian Zhang, Chenglu Zhang, Li Wang, Bo Zhang. Scirpus acutus, PA Ecotype Hardstem Bulrush, PA Ecotype Rhizomatous species; provides spawning grounds for bluegills and largemouth bass in shallow water; source of food and cover for waterfowl. Individual Seed Species. Woody Plants. 74 0. Shallow Water Bench. The dominant genera are Carex (48 spp), Cyperus (9 spp), Scirpus (9 spp), Eleocharis (6 spp) and Eriophorum (5 spp). Culms terminate in a 6” wide compound umbel. Stems are erect, round in cross-section, light blue-green when fresh, spongy and easily compressed when gently squeezed. John Deere Landscapes . The study evaluated pickerelweed (PW, Pontederia cordata L. 5% Scirpus cyperinus, PA Ecotype (Woolgrass, PA Ecotype. It can be found throughout the world, growing in many types of moist and wet habitat, and sometimes in shallow water. This culm is. It shows a high proportion of solitary spikelets (similar to S. HOW TO GROW. 0% Care-x SR 8. Wet shores and shallow water of ponds, lakes, rivers, ditches, and marshes; occasionally in bogs; on sand, marl, or peat. Syn: Scirpus validus, softstem bulrush: Family: Cyperaceae: Hardstem and softstem bulrushes are tall, stout, perennial plants with round, olive green stems, drooping brown flower clusters near the stem tips, and a few inconspicuous leaves at the stem bases. ) as the biosorbent. Trees and Shrubs. The depth may vary from 4 to 10 inches. Inflorescence usually open with small clusters of spikelets on tips of spreading to erect peduncles. T. softstem bulrush Schoenoplectus tabernaemontani. Yellow Rails also inhabit marshes with bulrushes of the genus Scirpus such as softstem bulrush, saltmarsh bulrush, and black-girdled woolgrass, with rushes of the genus Juncus such as soft rush, black needlerush, and Baltic rush, and with reedgrasses of the genus Calamagrostis, such as bluejoint reedgrass or slim-stem small reedgrass. heterochaetus ); however, the achenes are weakly trigonous in cross-section and . It grows better in saline conditions than in fresh water, and it tolerates a wide range of salinity. Mixed in with the tall herbs are lower forbs including several rare species. Dominant species are usually Schoenoplectus acutus (= Scirpus acutus), Schoenoplectus tabernaemontani (= Scirpus tabernaemontani), and/or Schoenoplectus americanus (= Scirpus americanus). Full sun, wet to moderately wet moisture level, tolerates a range of soils including clay, loam, peat or sandy, strongly acid to neutral pH. The effects of various parameters including contact time, biosorbent dosage, ionic strength and solution pH on the biosorption were investigated. 00 3. 5% Scirpus cyperinus, PA Ecotype (Woolgrass, PA Ecotype) 0. This culm is. It is characterized by the soft culms that make it stand out from other Bulrush species. Find the exact seeds you need for your project using the advanced search and filtering options of our Seed Finder Tool:Species Overview. Scirpus acutus, PA Ecotype $ 432. Soft brown thistles growing in valley meadow. Description. SPECIES: Schoenoplectus tabernaemontani GENERAL BOTANICAL CHARACTERISTICS: Softstem bulrush is a tall, leafless marsh plant 1. 01 Bolboschoenus fluviatilis River Bulrush 4. , St. Scirpus validus is an obligate wetland plant for inland shallow waters, non-tidal marshes, and wildlife. Lateral root growth was also. Schoenoplectus tabernaemontani (syn. J. Indigenous tribes wove the leaves and stalks into. It spreads, sometimes aggressively, to form dense colonies on shorelines or in shallow water. 60 4. In Saskatchewan hardstem bulrush is one of the earliest rooted macrophytes to invade flooded areas . We planted pots and prevegetated mats of softstem. 866-417-8156. GENERAL BOTANICAL CHARACTERISTICS: Common rivergrass is an emergent, perennial, rhizomatous cool-season grass which grows 2. 5% OFF orders of 2 or more flats of any species from Pizzo Native Plant Nursery. It is generally found in areas of standing water ranging from 10 cm to more than 1. Schoenoplectus tabernaemontani is a species of flowering plant in the sedge family known by the common names. It may also require prescribed fire over the long-term for perpetuation. Noteworthy Characteristics. The common name derives from the Nāhuatl. Cultivars, Improved and Selected Materials (and area of origin) Contact your local Natural Resources Conservation Service (formerly Soil Conservation Service) office for more information. The dominant vegetation in the wetlands includes reed canarygrass (Phalaris arundinacea), redtop (Agrostis gigantea), broadleaf cattail (Typha latifolia), Baltic rush (Juncus arcticus), and some patches of softstem bulrush (Schoenoplectus tabernaemontani), with some small patches of water speedwell (Veronica catenata) and. PLANTFILES. Viola. 00 Add to cart; Add to Wishlist. 1% Lobelia siphilitica, PA Ecotype (Great Blue Lobelia, PA Ecotype) 0. Flora of Pennsylvania. It grows in. Leaf blades reduced to scales. The shoots senesce in the winter. The effects of various parameters including contact time, biosorbent dosage, ionic strength and solution pH on the biosorption were investigated. 0 to 1 foot . S. 5% Mimulus ringens, PA Ecotype (Square Stemmed Monkeyflower, PA Ecotype) 0. [Smooth white violet] V. The plant is salt tolerant and does well in poorly drained areas. Scirpus validus creber is a PERENNIAL growing to 1. General Product Information. It closely resembles two other Minnesota Schoenoplectus species: Schoenoplectus acutus Schoenoplectus tabernaemontani. The results indicated a significant reduction of total nitrogen (98. Each wetland wassupplied with a different hydraulic loading rate ofagricultural. 20 100. 07 Schoenoplectus acutus Hardstem Bulrush 1. ) and softstem bulrush (SB, Schoenoplectus tabernaemontani) over time in microcosms flushed with water obtained from a nearby urban retention pond in northern Virginia near Washington, DC. , 1932, Ethnobotany of the Ojibwe Indians, Bulletin of the Public Museum of Milwaukee 4:327-525, page 418 View all documented uses for. It can be found throughout the world, growing in many types of moist and wet habitat, and sometimes in shallow water. The first record of Cuban bulrush in the U. Chiltoskey. Posted in Gardening Tips on March 18 2013, by Jody Payne. The fruit is a brownish gray. Scirpus validus) is a species of flowering plant in the sedge family known by the common names softstem bulrush and great. Ecotype function in the Typha community-type. Also available as App!Softstem bulrush shares most of the characteristics and biology as its close cousin Hardstem bulrush Schoenoplectus acutus. Species: Wood Bulrush, PA Ecotype. BIOLOGY-NATURAL HISTORY: The northeastern bulrush is a perennial member of the Sedge Family (Cyperaceae). Aquatic and Invasive Plant Identification Series by the UF/IFAS Center for Aquatic and Invasive Plants ( ) and the Florida Fish an. PA Ecotype) PA Ecotype (Green Bulrush, PA PA Ecotype (Woolgrass, PA Ecotype) oduct Information: restoration and mitigation mix contains sorr -May in full sun or partially shaded areas in season. Strikingly similar, I find the best way to tell them apart is to feel the stems and cut them to examine their cross sections. 00 0. The E-TP and E-TN was enhanced by 8. The stems are easily crushed. It is seldom grazed by livestock if other forage is available []. 52. ) Soják - swaying bulrush P: Schoenoplectus subulatus (Vahl) Lye - bulrush P: Schoenoplectus tabernaemontani (C. 32In this area, all of the vegetation will be submerged during high-water season. Associated herbs include Scirpus. Softstem Bulrush is a perennial grass-like plant with tall stems and clusters of brownish flowers. . 36 - 96 inches. ECOSYSTEMS : FRES37 Mountain meadows FRES38 Plains grasslands FRES39 Prairie FRES41 Wet grasslands STATES : AZ AR CA CO CT DE ID. , Fort Myers, Florida 33905. Establishment. Carex folliculata. ERNMX-131 35% Fox Sedge, PA Ecotype (Carex vulpinoidea, PA Ecotype) 20% Lurid (Shallow) Sedge, PA Ecotype (Carex lurida, PA Ecotype) 7% Green Bulrush, PA Ecotype (Scirpus atrovirens, PA Ecotype) 7. 16 Also known as Scirpus validus . Growing well in bottomland sites, Little blue stem is a great. Scirpus lacustris is a PERENNIAL growing to 2. FORUMS. Thousands of new, high-quality pictures added every day. SOFTSTEM BULRUSH Schoenoplectus tabernaemontani (K. 00 % Carex grayi, PA Ecotype Gray's Sedge, PA Ecotype 129. 1 foot below the normal pool (aquatic bench in stormwater ponds) Plants partially submerged. Scirpus expansus, PA Ecotype Wood Bulrush, PA Ecotype Very rhizomatous species; provides cover for wildlife. seed collected in our region or in Virginia) be planted. wide at base, gradually tapering upward; leaf blades none, just sheaths; inflorescence at stem tip, hanging clusters of spikelets; bract rolled, pointed, appears as a continuation of the stem; spikelets blunt, brown, each spikelet with up to 50. We would like to show you a description here but the site won’t allow us. Scirpus validus) is a species of flowering plant in the sedge family known by the common names softstem bulrush and great bulrush. The five hydrological regimes involved three water depths and cyclic flooding (Table 1). 05 Scirpus cyperinus Woolgrass 0. Students are responsible for doing the background reasearch regard their chosen. Founded by Calvin Ernst in 1964, Ernst Conservation Seeds is the largest native seed producer and supplier in the eastern United States. Soft-stem bulrush Schoenoplectus tabernaemontani is a tall, perennial, herbaceous plant that grows up to ten feet tall. Bulrush has an appearance of a hard tubular or triangular stem with slender leaves. Schoenoplectus tabernaemontani (Softstem Bulrush) Bulrush - Wikipedia. This is arenchyma tissue that. Plantae. The tops of the plants on the edge of Strubel Lake in se PA in August 2015. 50 % Scirpus validus, PA Ecotype Softstem Bulrush, PA. Scirpus validus) is a species of flowering plant in the sedge family known by the common names softstem bulrush, grey club-rush, and great bulrush. Biosorption of methylene blue from aqueous solution by softstem bulrush (Scirpus tabernaemontani Gmel. It can be found in wet, soggy prairies, and can also withstand permanent inundation in up to 12" of water. Aquatic macrophytes such as pickerelweed, pondweeds, and water-lilies may be25. Plan for Winter Pond. Dwarf cattailNatural Processes. 00 % Juncus tenuis, PA Ecotype Path Rush, PA Ecotype 48. 08 Schoenoplectus tabernaemontani Softstem Bulrush 3. It may occur in combinationof wild rice, softstem bulrush, and pickerelweed, often covering extensive areas. It can be found throughout much of the world; it has been reported from every state in the United States…Sedges, grasses & rushes growing in PA. Related types: This community type is easily distinguished by its clear dominance of . Can spread by seeds or rhizomes, making it good for colonization and able to recover from fire damage. After a prescribed fire in the Great Salt Lake Marsh, Utah, on September 2, 1981, hardstem bulrush sprouts were 1. Factors affecting growth of softstem bulrush (Scirpus validus), an obligate wetland plant frequently used in subsurface-flow constructed wetlands in North America, were studied in a controlled. Construction can begin once garden size, shape, location and plants have been decided. Hardstem Bulrush, PA Ecotype, Scirpus acutus, PA Ecotype seed. Scirpus validus is an obligate wetland plant for inland shallow waters, non-tidal marshes, and wildlife. [Marsh blue violet] V. Northern Long Sedge. 8 cups every. Description General : Sedge family (Cyperaceae). Hardstem Bulrush Three Square Bulrush Dark Green Bulrush River Bulrush Small Fruit Bulrush Pale Bulrush Alkali Bulrush Common Three S uare Softstem Bulrush Giant Bur Reed Slender Cordgrass Prairie Cordgrass Cattails APPROX. Growth of a wetland plant (softstem bulrush, Schoenoplectus tabernaemontani) was suppressed by ZnO NPs at 1000 ppm (Zhang et al. identified Juncus torreyi (Torrey’s rush), Schoenoplectus tabernaemontani (softstem bulrush), and Typha latifolia (broad leaf cattail) as capable Na + and Cl − accumulating plants, which suggests that harvesting could increase ion uptake due to the observed rapid growth after harvesting events. Summary 2. have usually 4 or 5 perianth bristles. Some authors [5,17] suggest. However, softstem bulrush stands can be reduced if prolonged draining and flooding continuously occurs. Such a mechanism is fostered by microbes within the attached biofilms. 20 8. Actinoscirpus grossus (also called Mensiang, Greater club-rush, Giant bulrush). The softstem bulrush (Schoenoplectus tabernaemontani) is a sedge found in or near water in many places around the world. Stems terete, 80–150 cm, filled with spongy air cavities. Periods of low water facilitate seed bank expression and seedling establishment when litter levels are low. The dense grassy patches on the right side of the Birdwalk in the following picture are paragrass. 00 0. 1in river bulrush between 2018 and 2020. Sheaths are deeply V-shaped at the tip, the membranous front splitting and becoming fibrous with age. This plant was identified as a new species in 1962, by Dr. Chemistry. . tabernaemontani [Softstem bulrush] Scirpus [Bulrush] S. Scirpus americanus, PA Ecotype Threesquare Bulrush, PA Ecotype Rhizomatous species; provides spawning grounds for bluegills and largemouth bass in shallow water; source of food and cover for waterfowl. Scirpus atrovirens : Green bulrush. The softstem bulrush is perfect for the margins of wildlife and ornamental ponds as its shoots and roots favor shallow water conditions. 50 0. d) BULRUSH, SOFTSTEM (Scirpus validus) SCVA - Round-stemmed plant that can grow 4 to 5 feet high. Plight to Freedom is now The Cargo Cult Café. 1964. 0% carex 200% Elymus 10. Scirpus validus var. 00 0. 00 % Elymus virginicus, PA Ecotype Virginia Wildrye, PA Ecotype 10. For spring planting, mix the seeds with moist sand and store in the refrigerator for 60 days before planting. The plants were cultivated using Hoagland's nutrient solution with a concentration of caffeine ranging from 0. ) Soják - swaying bulrush P: Schoenoplectus subulatus (Vahl) Lye - bulrush P: Schoenoplectus tabernaemontani (C. Ripening dates for softstem bulrush seeds vary from early August through mid October and I harvest them by pulling or cutting the fruit clusters from the stem. Habit: hardstem bulrush despite its common name is an erect giant species of sedge with long cylindrical to angular gray green stems. 2nd edition. 00 0. Common: softstem bulrush . characteristics. 00 % Mix Price/Lb Bulk: $53. フトイの花の咲く時期について。水生植物園では、5月初めに花が咲き始めていますし、国立科学博物館の附属植物園では、5月はじめにフトイの花が見ごろ、という情報もあったりするのですが(参考3)、自分の見た図鑑やサイトには、花期 7月~と書い. 2 vols. A fast-spreading bulrush, useful for erosion control and soil stabilization. 04 The study evaluated pickerelweed (PW, Pontederia cordata L. This fire occurred during an extended drought. Product Categories:Softstem bulrush has a preference for shallow bodies of water and consistently moist conditions. Common Name: SOFTSTEM BULRUSH Coefficient of Conservatism: 4 Coefficient of Wetness:-5 Wetness Index: OBL Physiognomy: Nt P-Sedge . It grows in shallow water, fresh or brackish, in ponds. 특징. Bulrush plant weeds can grow 5 to 10 feet (1. Abstract. stems to 8 ft. OBL . Stangel, P. Cultivars, Improved and Selected Materials (and area of origin) Contact your local Natural Resources Conservation Service (formerly Soil Conservation Service) office for more information. California bulrush is a freshwater (or slightly saline or alkaline) marsh species found throughout the southern United States 67 and south into South America. The tops of the plants on the edge of Strubel Lake in se PA in August 2015. Bur-reed, also known as giant bur-reed, is a robust rhizomatous plant with thick, spongy stems and leaves. Buttonbush (Cepahlanthus occidentalis)Family CYPERACEAE (Sedge Family) The Sedge Family is a large taxonomically difficult one with 83 species in 10 genera occurring on the Area. A colony on the edge of Strubel Lake in southeast PA in August 2015. Location relative to Water: Rooted underwater, emergent body . Summary 2 Schoenoplectus tabernaemontani (syn. Rosa virginiana – Low pasture rose. 50 % Scirpus cyperinus, PA Ecotype Woolgrass, PA Ecotype 115. Botanical Name: Scirpus validus. Gmel. 12 to 0. Narrow search results by plant name, project type, growing conditions, plant height, color & more. FORUMS. Design reports for the KTW state that softstem bulrush (S. Great Bulrush, also referred to as Soft-stem Bulrush, is a member of the sedge family and grows to about 2 m tall. J. Note: Do not plant these commercially available17. It grows 4-5’ tall and blooms in June-July. 5 m (5ft). Administrative Office 650 Stephenson Hwy . 0 to 1 foot . Each spikelet can have 50. great or soft-stem bulrush (S. It blooms from spring to summer and occurs almost always under. Ideal conditions for bulrush establishment include gently sloping shorelines, hard and sandy substrate and protection from wind and wave action. Bulrush Marsh Bulrush Bed State Rank S4 Community Description Tall rushes and other non-persistent graminoids dominate this lakeshore or rivershore community. cyperinus [Woolgrass] Description General: Sedge family (Cyperaceae). Species: OBL Wetland Mix. Continue Shopping. Common Name: Softstem Bulrush, Great Bulrush. In this. Hardstem Bulrush, PA Ecotype. Vallisneria americana (American Eelgrass)Bulrush, Any of the annual or perennial grasslike plants constituting the genus Scirpus, especially S.