Juncus tenuis var. dichotomus (Elliott) Alph.Wood

• Authority

  Balslev, Henrik. 1996. Juncaceae. Fl. Neotrop. Monogr. 68: 1-167. (Published by NYBG Press)

• Family

  Juncaceae

• Scientific Name

  Juncus tenuis var. dichotomus (Elliott) Alph.Wood

• Type

  Type. U.S.A. South Carolina or Georgia, Elliott s.n. (CHARL, n.v., photo KANU, n.v., cited in Brooks, 1989).

• Synonyms

  Juncus dichotomus Elliott, Juncus cognatus Kunth, Juncus tenuis var. unicornis E.Mey., Juncus albicans Fernald

• Description

  Variety Description - Perennial cespitose herbs, 10-90 cm tall. Rhizome densely branching. Culms longitudinally ridged. Auricles ca. 0.5 mm long, wider than long, rounded, cartilaginous. Leaf blade terete or channelled, when channelled the central part of the x.s. is thicker than the edges, adaxial side with or without a narrow band of hyaline cells occupying less than 1/3 of the width. Inflorescence composed of several unilateral cymes with the flowers, at least in part, regularly and equidistantly inserted. Lower inflorescence bract varying, shorter or longer than the inflorescence but usually conspicuously longer than the upper bracts. Tepals straight or only slightly recurved. Capsule shorter to longer than the tepals at maturity, thick walled, valves recurved along the seams and the capsule therefore with 3 low ridges or slightly 3-keeled.

• Discussion

  Distribution and Ecology: Juncus tenuis var. dichotomus occurs in E North America from Massachusetts to Oklahoma and Texas. In the Neotropical region it occurs on Jamaica, through the Mexican highlands, and again in Bolivia and SE Brazil, reaching into Uruguay and the province of Buenos Aires in Argentina. It grows in wet places along streams and roads, in bogs, etc., at elevations from sea level in Uruguay up to 1000 m in SE Brazil and 2500 m in Bolivia. In Mexico it has been collected at elevations of 1900-2700 m.

• Distribution

  Mexico North America| Chiapas Mexico North America| Hidalgo Mexico North America| Jalisco Mexico North America| México Mexico North America| Michoacán Mexico North America| Oaxaca Mexico North America| Puebla Mexico North America| San Luis Potosí Mexico North America| Veracruz Mexico North America| Guatemala Central America| Huehuetenango Guatemala Central America| Honduras Central America| La Paz Honduras Central America| Morazán Honduras Central America| El Salvador Central America| Chalatenango El Salvador Central America| Costa Rica South America| Jamaica South America| Saint Andrew Jamaica South America| Puerto Rico South America| Brazil South America| Minas Gerais Brazil South America| Paraná Brazil South America| Rio de Janeiro Brazil South America| São Paulo Brazil South America| Bolivia South America| Cochabamba Bolivia South America| Santa Cruz Bolivia South America| Tarija Bolivia South America| Paraguay South America| Argentina South America| Jujuy Argentina South America|