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Bergerocactus emoryi

Higher Taxonomy
Family: CactaceaeView DescriptionDichotomous Key

Habit: 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.
Genera In Family: +- 125 genera, +- 1800 species: America (especially deserts), Africa; many cultivated, some edible. Note: 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.
eFlora Treatment Author: Bruce D. Parfitt, except as noted
Scientific Editor: Bruce D. Parfitt, Douglas H. Goldman, Bruce G. Baldwin, Thomas J. Rosatti.
Genus: BergerocactusView Description 

Species In Genus: 1 sp. Etymology: (A. Berger, German succulent specialist, 1871--1931)

Bergerocactus emoryi (Engelm.) Britton & Rose
Habit: 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. Chromosomes: 2n=44.
Ecology: Sandy open hills, coastal only; Elevation: < 100 m. Bioregional Distribution: SCo (San Diego Co.), s ChI; Distribution Outside California: Baja California. Flowering Time: May--Jun Note: Threatened by development, collecting, feral goats.
Synonyms: Cereus emoryi Engelm.
eFlora Treatment Author: Bruce D. Parfitt
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Listed on CNPS Rare Plant Inventory

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botanical illustration including Bergerocactus emoryi


Citation for this treatment: Bruce D. Parfitt 2016. Bergerocactus emoryi, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 30, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 30, 2016.

Bergerocactus emoryi
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© 2015 Barry Rice
Bergerocactus emoryi
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© 2005 Dieter Wilken
Bergerocactus emoryi
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© 2011 Neal Kramer
Bergerocactus emoryi
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© 2011 Neal Kramer
Bergerocactus emoryi
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© 2011 Neal Kramer
Bergerocactus emoryi
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© 2009 California Academy of Sciences

More photos of Bergerocactus emoryi in CalPhotos

Geographic subdivisions for Bergerocactus emoryi:
SCo (San Diego Co.), s ChI;
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).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

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