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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 to subshrub; sap clear; generally monoecious; hairs 0 or generally 2-branched, generally appressed. Stem: spreading to erect, 1–10 dm. Leaf: alternate, stipuled. Inflorescence: raceme, axillary; staminate flowers generally distal to pistillate flowers; axis appressed- to spreading-hairy; bracts entire. Staminate flower: sepals 5, edges abutting in bud; petals 5; stamens 5–15, generally in 2 sets, some > others, filaments fused into a column, staminodes 0–3 at column tip. Pistillate flower: sepals 5, overlapping in bud; petals 5; nectar disk ± dissected; ovary 3-chambered, styles 3, 2-lobed. Fruit: smooth. Seed: surface ± striate to pitted [net-like]; scar not appendaged.
± 50 species: tropics, warm temperate America. (Greek: 2-ranked, from 2 sets of anthers)

Key to Ditaxis

1. Plant glabrous ..... D. serrata var. californica

1' Plant hairy, hairs 2-forked and appressed, occasionally simple or glandular

2. Margin of stipules, bracts, and pistillate sepals stalked-glandular; inflorescence axis minutely spreading-hairy ..... D. claryana

2' Margin of stipules, bracts, and pistillate sepals glabrous or faintly glandular, glands not stalked; inflorescence axis appressed-hairy

3. Subshrub, stems brittle; pistillate sepals ± = petals; fruit appressed-hairy; style lobes expanded ..... D. lanceolata

3' Annual or perennial herb (occasionally woody at base), stems not brittle; pistillate sepals clearly > petals; fruit ± spreading-hairy; style lobes not expanded

4. Seeds angled in ×-section, clearly pitted; leaves lanceolate, not densely hairy, entire to faintly toothed ..... D. neomexicana

4' Seeds round in ×-section, ± striate, not clearly pitted; leaves widely elliptic to ovate, densely hairy, clearly toothed distally ..... D. serrata var. serrata


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].
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