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DATISCACEAE DATISCA FAMILY

Steve Boyd & William J. Stone

Perennial herb, glabrous (sparsely short-hairy); plants with either male or bisexual flowers [dioecious]. Leaf: alternate, pinnately lobed or compound. Inflorescence: axillary spikes or small clusters. Bisexual flower: calyx lobes 3; stamens [0]2–4; ovary inferior, ovoid, 3-angled, chamber 1, placentas 3, parietal, styles 3, thread-like, 2-forked. Staminate flower: calyx lobes 4–9, unequal; corolla 0; stamens 8–12, filaments short. Fruit: capsule, opening at top between styles. Seed: many, minute.
1 genus, 2 species: western North America, Asia. [Zhang et al. 2006 Molec Phylogen Evol 39:305–322] With nitrogen-fixing root nodules. —Scientific Editor: Bruce G. Baldwin.

DATISCA
(Name used by Dioscorides)

D. glomerata (C. Presl) Baill. DURANGO ROOT
NATIVE
Stem: generally clustered, erect, branched, 1–2 m. Leaf: alternate above, ± opposite or ± whorled below, ± 15 cm, ovate to lanceolate, acuminate, coarsely and unequally pinnately lobed; petioles 2–3(4) cm. Flower: staminate flower calyx 2 mm; anthers 4 mm, ± sessile, yellow; bisexual flower calyx 5–8 mm; styles ± 6 mm. Fruit: ± 8 mm. Seed: ± 1 mm, light brown, pitted in rows.
Dry streambeds or washes; < 2000 m. California Floristic Province, s East of Sierra Nevada, Mojave Desert (Victorville, Cottonwood Mtns); western Nevada, Baja California. All parts TOXIC. May–Jul [Online Interchange]
Unabridged note: Datisca cannabina L. of sw¢ral Asia is dioecious.

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Nov 27 2014
Citation for this treatment: [Author of taxon treatment] 2013. Datisca, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=22377, accessed on Nov 27 2014

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click for enlargement Datisca glomerata
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1995 Saint Mary's College of California

Geographic subdivisions indicated for the distribution of Datisca glomerata Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.