Jepson eFlora: Taxon page
Vascular Plants of California
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Coleogyne ramosissima

Higher Taxonomy
Family: RosaceaeView DescriptionDichotomous Key
Common Name: ROSE FAMILY
Habit: Annual to tree, glandular or not. Leaf: simple to palmately or pinnately compound, generally alternate; stipules free to fused (0), persistent to deciduous. Inflorescence: cyme, raceme, panicle, cluster, or flowers 1; bractlets on pedicel ("pedicel bractlets") generally 0--3(many), subtended by bract or generally not. Flower: generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, subtending bractlets ("hypanthium bractlets") 0--5, alternate sepals; sepals generally 5; petals generally 5, free; stamens (0,1)5--many, anther pollen sacs generally 2; pistils (0)1--many, simple or compound, ovary superior to inferior, styles 1--5. Fruit: 1--many per flower, achene (fleshy-coated or not), follicle, drupe, or pome with generally papery core, occasionally drupe-like with 1--5 stones. Seed: generally 1--5 (per fruit, not per flower).
Genera In Family: 110 genera, +- 3000 species: worldwide, especially temperate; many cultivated for ornamental, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. Note: Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis.
eFlora Treatment Author: Daniel Potter & Barbara Ertter, family description, key to genera, treatment of genera by Daniel Potter, except as noted
Scientific Editor: Daniel Potter, Thomas J. Rosatti.
Genus: ColeogyneView Description 

Common Name: BLACKBUSH

Species In Genus: 1 sp. Etymology: (Greek: sheath female, from hypanthium enclosing pistil)
eFlora Treatment Author: Bruce D. Parfitt & Thomas J. Rosatti
Coleogyne ramosissima Torr.
Habit: Shrub 2--20 dm, much-branched, thorny, +- strigose. Leaf: in opposite clusters, simple, 5--15 mm, linear-oblanceolate, +- thick, entire; stipules persistent. Inflorescence: flowers 1, terminal; pedicel bractlets paired, closely subtending flower. Flower: hypanthium bell-shaped, leathery, sheath at top enclosing pistil, 4--9 mm, bractlets 0; sepals 4(5), spreading, 5--8 mm, ovate, generally yellow, often +- red abaxially, persistent, inner 2 widely scarious-margined; petals 0(1--5, 5--8 mm, yellow); stamens 20--25(30); pistil 1(2), ovary superior, style lateral, long-hairy especially below, persistent. Fruit: achene, +- 4--6 mm, +- crescent-shaped, red-brown, glabrous.
Ecology: Dry, open slopes, creosote-bush scrub, pinyon/juniper woodland; Elevation: 600--2000 m. Bioregional Distribution: SNE, D (esp DMtns); Distribution Outside California: to Colorado, New Mexico. Flowering Time: Apr--Jun
Jepson eFlora Author: Bruce D. Parfitt & Thomas J. Rosatti
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Coleogyne ramosissima

botanical illustration including Coleogyne ramosissima


Citation for this treatment: Bruce D. Parfitt & Thomas J. Rosatti 2012, Coleogyne ramosissima, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 12, 2021.

Citation for the whole project: Jepson Flora Project (eds.) 2021, Jepson eFlora,, accessed on May 12, 2021.

Coleogyne ramosissima
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© 2019 Aaron Schusteff
Coleogyne ramosissima
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© 2010 Neal Kramer
Coleogyne ramosissima
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© 2006 James M. Andre
Coleogyne ramosissima
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© 2000 California Academy of Sciences
Coleogyne ramosissima
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© 2004 James M. Andre
Coleogyne ramosissima
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© 2012 Gary A. Monroe

More photos of Coleogyne ramosissima in CalPhotos

Geographic subdivisions for Coleogyne ramosissima:
SNE, D (esp DMtns)
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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.
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).