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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.

 

DICHELOSTEMMA

J. Chris Pires & Glenn Keator


Daughter corms generally sessile. Leaf: 2–5, generally keeled, entire, glabrous, occasionally withered by flowering. Inflorescence: raceme- or umbel-like, generally dense; scape generally curved, twisted, or twining, cylindric; bracts ± papery; pedicels generally < flowers. Flower: perianth tube cylindric to bell-shaped, appendages at junction of tube, lobes forming crown; staminodes 0 (3, stamen-like); stamens 3, equal, or 6, unequal, 3 smaller, filaments fused to perianth tube, forming crown-like tube outside anthers, anthers attached at base; style 1, stigma weakly 3-lobed. Fruit: generally sessile, generally ovoid, 3-angled. Seed: sharp-angled, black-crusted.
5 species: western United States, especially northern California, northern Mexico. (Greek: toothed crown, from perianth appendages) [Keator 1992 Four Seasons 9:24–39]

Key to Dichelostemma

1. Perianth tube cylindric, >= 20 mm; inflorescence open; perianth tube red, lobes yellow-green ..... D. ida-maia

1' Perianth tube cylindric to ± spheric, < 20 mm; inflorescence dense; perianth tube pink or not but not red, lobes not yellow-green

2. Scape twining; perianth pink (white); staminodes 3, stamen-like, alternate stamens ..... D. volubile

2' Scape straight or ± curved; perianth blue, purple, or white; staminodes 0

3. Stamens 6, unequal; perianth tube not narrowed above ovary ..... D. capitatum

4. Bracts generally dark purple (paler, striped dark purple); flowers 6–15; pedicels 1–15 mm, generally < bracts ..... subsp. capitatum

4' Bracts ± white or streaked purple; flowers 2–5; pedicels 6–35 mm, > bracts ..... subsp. pauciflorum

3' Stamens 3, equal; perianth tube narrowed above ovary or ± so

5. Perianth crown deep-notched; inflorescence raceme-like; perianth tube ± narrowed above ovary ..... D. congestum

5' Perianth crown truncate or rounded; inflorescence umbel-like; perianth tube narrowed above ovary ..... D. multiflorum

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [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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