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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: Cistaceae||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Perennial herb or subshrub, deciduous, generally late summer, fall; hairs generally in stellate clumps, rarely glandular (except inflorescence), sparse to dense. Stem: generally erect, +- broom-like. Leaf: basal 0 [present]; cauline generally alternate, generally linear to lanceolate or oblanceolate, sessile to short-petioled, margins entire, generally rolled under, stipules 0. Inflorescence: raceme- or panicle-like, glandular hairs on branches, pedicels generally 0 to sparse; cleistogamous flowers 0 [present]. Flower: sepals 5, outer 2 generally narrower; petals yellow; stamens 10--many; style < 2 mm, stigma +- hemispheric. Fruit: generally +- ovoid; valves generally 3.
Species In Genus: 21 species: North America to South America. Etymology: (Greek: yellow flower) Note: Esp abundant after fire, resprouting from woody caudex. New World taxa transferred from polyphyletic Helianthemum by Sorrie. Descriptions refer to opening flowers; cleistogamous flowers (0 in California), sometimes produced later, lack petals. Flowers of Crocanthemum scoparium from Mt. Diablo reported to have 5 stamens, which instead seem to represent 5 united pairs.
Unabridged Note: Based on molecular and other data (as yet unpublished, by Jenny Arrington & Paul Manos) Helianthemum is polyphyletic; California taxa more closely related to Crocanthemum and Hudsonia than to Helianthemum; New World members treated in Crocanthemum by Sorrie, who is preparing treatment for FNANM.
eFlora Treatment Author: Bruce A. Sorrie & Thomas J. Rosatti
Jepson Online Interchange
Key to CrocanthemumPrevious taxon: Cistus salviifolius
Next taxon: Crocanthemum aldersonii
Citation for this treatment: Bruce A. Sorrie & Thomas J. Rosatti 2016. Crocanthemum, Revision 1, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=68330, accessed on July 29, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on July 29, 2016.