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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 October 26, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on October 26, 2016.

Bergerocactus emoryi
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© 2015 Barry Rice
Bergerocactus emoryi
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© 2011 Neal Kramer
Bergerocactus emoryi
click for enlargement
© 2011 Neal Kramer
Bergerocactus emoryi
click for enlargement
© 2011 Neal Kramer
Bergerocactus emoryi
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© 2010 Gary A. Monroe
Bergerocactus emoryi
click for enlargement
© 2011 Neal Kramer

More photos of Bergerocactus emoryi in CalPhotos

Geographic subdivisions for Bergerocactus emoryi:
SCo (San Diego Co.), s ChI;
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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.
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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.