|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
Annual, perennial herb, generally from rhizomes
Stem round or flat
Leaves generally mostly basal; sheath margins fused, or overlapping and generally with 2 ear-like extensions at blade junction; blade round, flat, or vestigial, glabrous or margin hairy
Inflorescence: head-like clusters or single flowers, variously arranged; bracts subtending inflorescence 2, generally leaf-like; bracts subtending inflorescence branches 12, reduced; bractlets subtending flowers generally 12, generally translucent
Flower generally bisexual, radial; sepals and petals similar, persistent, green to brown or purplish black; stamens generally 3 or 6, anthers linear, persistent; pistil 1, ovary superior, chambers generally 1 or 3, placentas 1 and basal or 3 and axile or parietal, stigmas generally > style
Fruit: capsule, loculicidal
Seeds 3many, often with white appendages on 1 or both ends
Genera in family: 9 genera, 325 species: temp, arctic, tropical mtns. Fls late spring to early fall.
Annual, perennial herb; rhizome (if any) generally with scale-like leaves
Stem generally cylindric or flat
Leaf: blade well developed and cylindric or flat, or reduced to small point; crosswalls often present (pull fresh blade apart lengthwise to see or slide leaf between fingers to feel); appendages often present at blade-sheath junction
Inflorescence generally terminal (appearing lateral when pushed aside by lowest inflorescence bract); bractlets 02
Flowers: stamens generally 3 or 6 (2 in some very small annual taxa); pistil 1, ovary chambers 1 or 3, placentas axile or parietal, stigmas generally 3(2)
Species in genus: 225 species: worldwide, especially n hemisphere
Etymology: (Latin: to join or bind, from use of stems)
Reference: [Ertter 1986 Mem NY Bot Gard 39:190]
Annual, densely cespitose, 0.13.2 cm
Stem 0.10.5 mm wide
Leaves basal, < 1.8 cm; sheath appendages 0
Inflorescence: flower generally 1 per stem; bracts 02, < 2 mm, ovate to rounded, not sheathing stem
Flower: perianth segments 46, 1.93.5 mm (sepals = or > petals), dull; stamens 23, filaments > anthers, (anthers < 0.7 mm)
Fruit < to > perianth, obovoid to oblong; chambers 23
Seed 0.30.55 mm, not striate; appendages small
Ecology: Damp open areas, especially vernally wet places
Elevation: 4003400 m.
Bioregional distribution: Northwestern California, Sierra Nevada, San Bernardino Mountains, Great Basin Floristic Province
Distribution outside California: to Washington, Idaho, Utah
See the CNPS Inventory for information about endangerment and rarity.
Stem 0.20.5 mm wide, wider below flower
Inflorescence: bracts 0
Fruit generally < perianth
Ecology: UNCOMMON. Habitat of sp.
Elevation: 14003400 m.
Bioregional distribution: High Sierra Nevada
Distribution outside California: to Oregon, Idaho, Nevada