|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 from stout horizontal rhizome, 1548 cm
Leaf: blade < 19 cm, 35 mm wide, bluish green, tapered abruptly to long tip
Inflorescence: clusters 312-flowered, crowded at ends of uneven, often arching peduncles; lowest bract 23 cm, inconspicuous; bractlets clear, margin hairy
Flower: perianth segments 1.52 mm (sepals = petals), pale to dark brown, tips acute; filaments ± = anthers
Fruit < perianth, pale to dark brown-purple, short-beaked
Seed 1.11.2 mm, 0.6 mm wide, brown; appendage 0
Ecology: Alpine to subalpine moist or wet places
Elevation: 20003500 m.
Bioregional distribution: Klamath Ranges, High Cascade Range, High Sierra Nevada
Horticultural information: STBL.