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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Fabaceae (Leguminosae)||View Description||Dichotomous Key|
|Genus: Senna||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Senna armata (S. Watson) H.S. Irwin & Barneby
Habit: Shrub, armed, +- leafless most of year, +- glabrous. Stem: 0.5--1 m; branches from base, grooved, a weak thorn at tip or not, green. Leaf: stipules 0 or minute; leaflets 4--8, not overlapped, +- opposite, +- sessile, 4--6 mm, asymmetric, generally ovate, ephemeral; main axis elongating after leaflets fall, a weak spine at tip. Inflorescence: terminal raceme. Flower: petals 8--12 mm, obovate, yellow to salmon-red. Fruit: dehiscent, 2.5--4 cm, lanceolate, straight. Seed: few.
Ecology: Uncommon. Sandy or gravelly washes; Elevation: 100--1400 m. Bioregional Distribution: D; Distribution Outside California: Nevada, Arizona, Baja California. Flowering Time: Mar--Jul
Synonyms: Cassia armata S. Watson
eFlora Treatment Author: Martin F. Wojciechowski & Elizabeth McClintock
Jepson Online Interchange
Previous taxon: Senna
Next taxon: Senna artemisioides
Citation for this treatment: Martin F. Wojciechowski & Elizabeth McClintock 2016. Senna armata, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=44131, accessed on May 03, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 03, 2016.