|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.
Perennial; rhizome often short, vertical
Leaves mostly basal, reduced upward; sheath closed; margin and sheath opening generally with long, soft hairs; blades flat or channeled, veins indistinct, tips often thick
Inflorescence: head-like clusters or panicles of separate flowers; bractlets 13, margins often hairy
Flower: stamens 6; pistil 1, chamber 1, placenta basal
Seeds 3, plump, elliptic, often with a distinct ridge, sometimes attached to placenta by tuft of hairs
Species in genus: 80 species: worldwide, especially n hemisphere
Etymology: (Latin: light; Italian: glowworm)
When present, fleshy seed appendage (outer seed coat) adapts large seeds to ant dispersal.
Plant densely cespitose, stiffly erect, 326 cm
Stem reddish brown
Leaves many, overlapping; blade 2.57 cm, 25 mm wide, firm, mostly glabrous, tip thickened, reddish
Inflorescence: 15 clusters, appearing as single pyramidal inflorescence, 510 mm wide, sometimes with 12 smaller clusters on short peduncles; lowest bract < to > inflorescence, generally stiff, reddish; bractlets clear
Flower: perianth segments 23 mm (sepals slightly > petals), very dark, margins clear; filaments generally = anthers
Fruit << perianth, dark brown to black in upper portion
Seed 0.8 mm, oval; appendage ± 0.2 mm
Ecology: Alpine and subalpine meadows, fell-fields
Elevation: 27003600 m.
Bioregional distribution: High Sierra Nevada
Horticultural information: IRR: 1 &SHD: 2, 3, 7, 15, 16, 18; DFCLT.