Directory       News       Site Map       Home
    Jepson eFlora
Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.


Annual, biennial, perennial herb, taprooted. Stem: 1–several from base, erect, simple or distally much-branched. Leaf: basal and cauline, alternate; proximal petioled, pinnately or ternately dissected into narrow lobes; distal reduced, sessile. Inflorescence: heads radiant or discoid [radiate], in many-headed, ± flat-topped cyme-like clusters; peduncle slender; involucre obconic to hemispheric; phyllaries in 1–2 ± equal series, free; receptacle rounded, epaleate. Ray flower: 0 [few; ray yellow]. Disk flower: few to many; corolla white or purple-tinged [yellow]; anther tips triangular; style tips narrowly triangular. Fruit: club-shaped, 4–5-angled, ± hairy; pappus of 10–15 bristle-tipped scales.
5 species: southwestern United States, Mexico. (Greek: membranous bristle, from pappus) [Strother 2006 FNANM 21:387–388]

Key to Hymenothrix

1. Corolla cream, outer often larger than inner; anthers yellow or light brown ..... [H. loomisii]

1' Corolla white or purple-tinged, equal; anthers dark purple ..... H. wrightii


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.