Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



David J. Keil, Family Editor and author, except as specified

Annual to tree
Leaves basal or cauline, alternate to whorled, simple to compound
Inflorescence: 1° inflorescence a head, each resembling a flower, 1–many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1–many per head
Flowers bisexual, unisexual, or sterile, ± small, of several types; calyx 0 or modified into pappus of bristles, scales, or awns, which is generally persistent in fruit; corolla radial or bilateral (rarely 0), lobes generally (0)4–5; stamens 4–5, anthers generally fused into cylinder around style, often appendaged at tips, bases, or both, filaments generally free, generally attached to corolla near throat; pistil 1, ovary inferior, 1-chambered, 1-seeded, style 1, branches 2, generally hair-tufted at tip, stigmas 2, generally on inside of style branches
Fruit: achene, cylindric to ovoid, generally deciduous with pappus attached
Genera in family: ± 1300 genera, 21,000 species (largest family of dicots): worldwide. Largest family in CA. Also see tribal key to CA genera: Strother 1997 Madroño 44(1):1–28. See glossary p. 25 for illustrations of general family characteristics.


A. Michael Powell

Annual or perennial herb < 30 cm, ascending, hairy
Leaves sessile; lower opposite; blades < 2.5 cm, oblong, serrate
Inflorescence open; heads discoid, small, 1–few; involucre hemispheric to bell-shaped; phyllaries ± 30, subequal in 2–3 series; receptacle convex to conic, naked
Flowers 75–125; corolla tube narrow; style branches slender
Fruit 4–5-ribbed; pappus of 2–6 short bristles, ± 1 mm
Species in genus: 2 species: sw US, Mex
Etymology: (Greek: hair crown, from pappus)
Reference: [King & Robinson 1987 Monogr Syst Bot Missouri Bot Garden 22:188–190]


T. wrightii (Torr. & A. Gray) A. Gray var. wrightii

Inflorescence few-branched; heads ± 5 mm diam
Flowers: corolla ± 1 mm, throat white below, maroon above, lobes white
Fruit ± 1.5 mm
Chromosomes: 2n=30
Ecology: Uncommon. Moist places
Bioregional distribution: Great Central Valley, South Coast
Distribution outside California: native to s Texas, ne Mexico
Another var. in Baja CA.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for TRICHOCORONIS%20wrightii%20var.%20wrightii being generated

Retrieve Jepson Interchange Index to Plant Names entry for Trichocoronis wrightii var. wrightii
Retrieve dichotomous key for Trichocoronis
Overlay Consortium of California Herbaria specimen data by county on this map
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