Juncus continuus

• Description
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Description

Family Juncaceae

Herbs, very rarely shrublike, perennial or annual , tufted or with erect or creeping rhizome. Stems erect, terete or laterally flattened. Leaves occasionally reduced to a bladeless or nearly bladeless sheath at base of stem (cataphyll) ; leaf sheath often shortly prolonged on both sides into a pair of auricles at leaf blade juncture; leaf blade of basal and cauline leaves usually linear or filiform , grasslike and flat, or terete, glabrous except for pilose margin on some grasslike blades. Inflorescence a panicle, corymb, or 1-flowered. Flowers bisexual or unisexual and plants dioecious, mostly wind pollinated, regular, usually small, usually 1- or 2-bracteolate at base. Perianth segments (3 or) 6, in (1 or) 2 whorls, free , usually greenish to brownish or blackish, rarely white or yellowish, glumelike. Stamens 3 or 6, if 6 then 3 opposite outer perianth segments; filaments thin; anthers basifixed , 2-loculed, dehiscing by longitudinal slits; pollen grains in tetrads . Ovary superior, 1-loculed, or divided by 3 septa and 3-loculed, or incompletely septate ; ovules 3 and inserted at base of ovary, or numerous and biseriate on 3 parietal placentas. Stigmas 3, papillose . Fruit a capsule, 1--3-valved, loculicidal. Seeds globose , ovoid , or fusiform , small, sometimes appendaged; appendage caudate ; embryo straight, minute, enclosed by fleshy endosperm.

About eight genera and ca. 400 species: widely distributed in temperate and cold regions of both hemispheres, in tropical regions restricted to high elevations ; two genera and 92 species (33 endemic) in China.[1]

Genus Juncus

Herbs, perennial or rarely annual , rhizomatous or cespitose. Culms round or flattened in cross section . Cataphylls often present at culm base. Leaves: sheaths open; blade flat, channeled , ensiform or terete , sometimes septate , margins involute . Inflorescences terminal or pseudoaxillary, monochasia or dichasia, usually with monochasial branches, cymes or 1--many heads in racemes or panicles; bracteoles 2 or absent. Flowers: tepals (4--) 6 in 2 whorls; stamens (2--) 3--6. Capsules 1-locular or 3-locular, septicidal . Seeds many, ellipsoid to ovoid , sometimes tailed .

Species ca. 300: worldwide except Antarctica.[2]

Habitat

Typically found at an altitude of 0 to 1,397 meters (0 to 4,583 feet).[3]

Taxonomy

Notes

Name Status: Accepted Name .

Publishing author : L.A.S.Johnson Publication : J.M. Black's Flora of South Australia 1978 (6 Jul. 1978)

Similar Species

Members of the genus Juncus

ZipcodeZoo has pages for 1350 species, subspecies, varieties, forms, and cultivars in this genus. Here are just 100 of them:

J. abjectus · J. abortivus · J. acicularis · J. acumiantus · J. acuminatus (Sharp-Fruit Rush) · J. acuminatus debilis · J. acuminatus f. sphaerocephalus · J. acuminatus legitimus · J. acuminatus robustus · J. acuminatus var. paradoxus · J. acuminatus var. sensu · J. acutangulus · J. acutiflorus (Sharp-Flower Rush) · J. acutiflorus acutiflorus (Sharpflower Rush) · J. acutiflorus rugosus · J. acutiflorus × articulatus · J. acuto-maritimus · J. acutus (Sharp Rush) · J. acutus acutus (Spiny Rush) · J. acutus f. xanthosus (Spiny-Rush) · J. acutus leopoldii (Spiny Rush) · J. acutus littoralis · J. acutus sphaerocarpus · J. acutus subsp. leopoldii · J. adscendens · J. aemulans (Common Rush) · J. affinis · J. agrostophyllus · J. alatus · J. albescens · J. albicans · J. albidus · J. albus · J. aletaiensis · J. alexandri · J. alexandri alexandri · J. alexandri melanobasis · J. alexandri subsp. melanobasis · J. allioides · J. alpestris · J. alpiarticulatus · J. alpigenus · J. alpiniformis (Alpine Rush) · J. alpino · J. alpino-articulatus · J. alpinoarticulatus (Northern Green Rush) · J. alpinoarticulatus alpestris · J. alpinoarticulatus alpinoarticulatus · J. alpinoarticulatus americanus · J. alpinoarticulatus fischeranus · J. alpinoarticulatus fischerianus · J. alpinoarticulatus fuscencens · J. alpinoarticulatus fuscescens · J. alpinoarticulatus nodulosus (Alpine Rush) · J. alpinoarticulatus rariflorus · J. alpinoarticulatus subsp. alpestris · J. alpinoarticulatus subsp. americanus · J. alpinoarticulatus subsp. fischeranus · J. alpinoarticulatus subsp. fuscencens · J. alpinoarticulatus subsp. fuscescens · J. alpinoarticulatus var. macrocephalus (Northern Green Rush) · J. alpinus · J. alpinus alpinus · J. alpinus and · J. alpinus australis · J. alpinus f. obtusatus · J. alpinus fuscescens · J. alpinus insignis · J. alpinus nodulosus · J. alpinus subsp. turczaninovii · J. alpinus turczaninovii · J. alpinus var. americana · J. altus · J. amabilis · J. ambiguus (Seasice Rush) · J. ambiguus turkestanicus · J. ambiguus var. ossoraicus (Rush) · J. amplifolius · J. amuricus · J. anatolicus · J. anceps · J. andersonii · J. andicola · J. andicolus · J. angustifolius · J. annuus · J. anonymus · J. antarcticus · J. anthelatus (Greater Poverty Rush) · J. aquarrosus · J. aquaticus · J. arabicus · J. arcticus (Arctic Rush) · J. arcticus alaskanus · J. arcticus arcticus (Arctic Rush) · J. arcticus balticus · J. arcticus grubovii · J. arcticus littoralis (Arctic Rush) · J. arcticus mexicanus · J. arcticus pyrenaeus

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Further Reading

• Wu Kuo-fang. 1997. Juncaceae. In: Wu Kuo-fang, ed., Fl. Reipubl. Popularis Sin. 13(3): 146--253.
• Engelmann, G. 1866--1868. Revision of the North American species of the genus Juncus, with a description of new or imperfectly known species. Trans. Acad. Sci. St. Louis. 2(2, 3): 424--498.
• Hermann, F. J. 1975. Manual of the Rushes (Juncus spp.) of the Rocky Mountains and Colorado Basin. Fort Collins, Colo. [U.S.D.A. Forest Serv. , Gen. Techn. Rep. RM-18.]

Notes

Contributors

• African Regional Workshop (Conservation and Sustainable Management of Trees, Zimbabwe) 1998. Pericopsis elata. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 20 October 2006.
• Barneby RC & Forero E, 1994/1995 (from ILDIS).
• Barneby RC & Grimes JW (Monograph 1996/97), 2001-05 (from ILDIS).
• Barneby RC and Forero E, 1994/1995 (from ILDIS).
• Bisby, F.A., Y.R. Roskov, M.A. Ruggiero, T.M. Orrell, L.E. Paglinawan, P.W. Brewer, N. Bailly, J. van Hertum, eds (2007). Species 2000 & ITIS Catalogue of Life: 2007 Annual Checklist. Species 2000: Reading, U.K.
• Brands, S.J. (comp.) 1989-2005. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. [http://sn2000.taxonomy.nl/Taxonomicon/]. Access date: Nov 23, 2005
• Brands, S.J. (comp.) 1989-2006. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. Accessed April 21, 2007.
• Brands, S.J. (comp.) 1989-2007. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. Accessed September 17, 2007.
• Carr, Gerald
• Chappill J, 2001-06 (from ILDIS).
• Cristofolini G, 2001-06 (from ILDIS).
• Fautin, Daphne G. (from Hexacorallians of the World).
• Global Biodiversity Information Facility. Accessed January 27, 2008. http://www.gbif.org Mediated distribution data from provider.
• Hexacorallians of the World 2001.
• Heyn CC & Heller D 1991/1993 (from ILDIS).
• Home of the Xylariaceae 2006.
• ILDIS World Database of Legumes, 10, Nov 2005
• ILDIS World Database of LegumesNov 10, 2005.
• IOPI-GPC
• Lewis GP, 1994/1995 (from ILDIS).
• Light, Kris. East Tennessee Wildflowers
• Nghia, N.H. 1998. Dalbergia entadoides. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 20 October 2006.
• Pippen, Jeffrey S. Jeff's Nature Page. Accessed December 8, 2007.

Data Sources

Accessed through GBIF Data Portal January 30, 2008:

• Australian National Herbarium
• , Australian National Herbarium
• The New York Botanical Garden, Vascular Plant Type Specimens

Identifiers

• Biodiversity Heritage Library NamebankID: 3484916
• Catalogue of Life Accepted Name Code: IOP-417
• Globally Unique Identifier: urn:lsid:ipni.org:names:442844-1
• International Plant Names Index (IPNI) ID: 135006-3
• Zipcode Zoo Species Identifier: 431895

Footnotes

1. Guofang Wu & Steven E. Clemants "Juncaceae". in Flora of China Vol. 24 Page 44. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
2. Ralph E. Brooks, Steven E. Clemants "Juncus". in Flora of North America Vol. 22. Oxford University Press. Online at EFloras.org. [back]
3. Mean = 333.960 meters (1,095.669 feet), Standard Deviation = 641.560 based on 170 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]

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