Directory       News       Site Map       Home
    Jepson eFlora: Taxon page
Key to families | Table of families and genera

Previous taxon 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 |
Previous taxon


Bruce D. Parfitt, except as noted

Perennial herb, shrub, tree, generally fleshy. Stem: cylindric to spheric, or flat; surface smooth, tubercled, or ribbed (grooved); nodal areoles bearing flowers. Leaf: generally 0 or early-deciduous, flat to ± cylindric. Spines: areoles generally with central, radial spines, occasionally with glochids. Flower: generally 1 per areole, bisexual [unisexual], sessile, radial [bilateral]; perianth parts generally many [5], scale-like to petal-like; stamens many; ovary inferior [superior], style 1, stigma lobes generally several [many]. Fruit: dry to fleshy or juicy, indehiscent to variously dehiscent, spiny, scaly, or naked; tubercled or smooth. Seed: generally many, occasionally 0–few.
± 125 genera, ± 1800 species: America (especially deserts), Africa; many cultivated, some edible. [Parfitt & Gibson 2004 FNANM 4:92–257] Spines smaller, fewer (0) in shade forms; yellow spines blacken in age. Introduced species increasingly escape cultivation. Hybridization common in some genera. Taxa of Escobaria in TJM (1993) moved to Coryphantha. —Scientific Editors: Bruce D. Parfitt, Douglas H. Goldman, Bruce G. Baldwin, Thomas J. Rosatti.
Unabridged references: [Hunt 2006 The New Cactus Lexicon, DH Books, Milborne Port, England]

Key to Cactaceae


1 sp. (A. Berger, German succulent specialist, 1871–1931)

B. emoryi (Engelm.) Britton & Rose GOLDEN-SPINED CEREUS
Shrub, thicket-forming, ascending to sprawling or decumbent, many-branched. Stem: < 2 m, 3–6 cm diam, cylindric, soft-fleshy, ± obscured by spines, generally not regularly segmented; ribs generally 12–18, prominent, tubercles ± 0. Spines: 30–45 per areole, < 2 mm diam, needle-like, straight or curved, yellow, darker in age, smooth; central spines 1–3, decurved, longest < 60 mm; radial spines straight. Flower: lateral to terminal, at distal margin of spine cluster, 3.5–5 cm, 2.5–4 cm diam; ovary glabrous, densely spiny, scales minute or none; outer perianth parts yellow, tips ± red, midveins green, inner perianth parts all yellow. Fruit: spheric, fleshy, dry in age, densely spiny, extruding seeds and pulp at tip. Seed: 3 mm, ± flat-obovoid, black, shiny.
2n=44. Sandy open hills, coastal only; < 100 m. South Coast (San Diego Co.), s Channel Islands; Baja California. [Cereus emoryi Engelm.] Threatened by development, collecting, feral goats. May–Jun [Online Interchange] {CNPS list}

Previous taxon: Bergerocactus
Next taxon: Carnegiea


Name search

Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora,, accessed on Nov 26 2015
Citation for this treatment: [Author of taxon treatment] 2013. Bergerocactus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on Nov 26 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.

click for enlargement Bergerocactus emoryi
See CalPhotos for additional images
© 2007 John M. Taylor

Geographic subdivisions indicated for the distribution of Bergerocactus emoryi 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.
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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records


CCH collections by month

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