|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Annual to shrub, aromatic, of sunny areas, often sandy or chalky substrates; hairs nonglandular, in stellate clumps or not, peltate or not, and/or glandular. Leaf: simple, alternate or opposite [whorled], often ± reduced, entire or not, petioled or not, stipuled or not. Inflorescence: raceme- or panicle-like cymes or flowers 1. Flower: generally bisexual, ± radial; sepals 3 or 5 (outer 2 often narrower), free or fused at very base, often persistent in fruit, 3 twisted in direction opposite that of petals; petals [0(3)]4–5, generally ephemeral; stamens (3–10) many, free, often sensitive to touch, ± persistent in fruit or not; ovary superior, chambers 1 (or ± 3–12 from intruded parietal placentas), style 0–1, stigma 1(3), lobes 0 or 3–12. Fruit: loculicidal capsule, valves 3–12. Seed: [1–]3–many.
8 genera, ± 175 species: temperate, especially southeastern United States, Mediterranean; some cultivated (Cistus; Crocanthemum; Tuberaria). [Arrington 2004 Ph.D. Dissertation Duke Univ] Flowers open in sunshine for < 1 day. Taxa of Helianthemum in TJM2 treated here in Crocanthemum. —Scientific Editors: Thomas J. Rosatti, Bruce G. Baldwin.
Unabridged references: [Strother FNANM, in press]
Key to Cistaceae
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.Key to Crocanthemum
21 species: North America to South America. (Greek: yellow flower) [Sorrie 2012 Phytologia 93:270–271] 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.
Stem: 30–65 cm. Leaf: petiole 0.5–1.5 mm; blade 10–21(26) mm, 0.9–2 mm wide. Flower: outer sepals 1.3–2(2.8) mm, ± 0.3 mm wide, linear, inner 4.7–7(8) mm, 2–3 mm wide, acuminate (acute); petals 8–12 mm, obovate; stamens 12–36. Fruit: 3.5–4 mm. Seed: 7–12.
Slopes, canyons in chaparral; 100–1200 m. South Coast, Peninsular Ranges; northern Baja California. [Helianthemum scoparium Nutt. var. aldersonii (Greene) Munz; Helianthemum scoparium Nutt. sensu TJM2 (2012), in part] Mar–Jun [Online Interchange]
Previous taxon: Crocanthemum
Next taxon: Crocanthemum greenei
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 28 2015
Citation for this treatment: [Author of taxon treatment] 2013. Crocanthemum, Revision 1, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=95273, accessed on Mar 28 2015
Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.
|Geographic subdivisions indicated for the distribution of Crocanthemum aldersonii|| 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.
READ ABOUT YELLOW FLAGS
(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).
View elevation by latitude chart
| Data provided by the participants of the Consortium of California Herbaria.
View all CCH records
CCH collections by month