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Vascular Plants of California
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Echinocereus engelmannii


Higher Taxonomy
Family: CactaceaeView DescriptionDichotomous Key
Common Name: CACTUS FAMILY
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: EchinocereusView DescriptionDichotomous Key


Common Name: HEDGEHOG CACTUS
Habit: Generally erect to ascending, [sprawling, pendent, or decumbent], branched or not, branches generally few--500, occasionally in dense mounds. Stem: [2]5--60[200] cm, (1)4--15 cm diam, spheric to long-cylindric, soft, not regularly segmented; ribs prominent, 4--13[26], tubercles +- 0 along rib-crests. Spines: [0]4--55 per areole, < 2 mm diam, needle- to dagger-like, glabrous to puberulent, straight, curved, or curly; central spines (0)1--6(9). Flower: lateral, near distal margin of spine cluster; perianth purple to lavender, orange, or red [yellow or green]; ovary glabrous, spiny, scales minute. Fruit: spheric to obovoid, indehiscent or splitting laterally, densely spiny, spine clusters deciduous. Seed: 0.8--2 mm, obovoid to +- spheric, dull, wrinkled or tubercled, generally black.
Species In Genus: 49 species: southwestern United States, Mexico. Etymology: (Greek: hedgehog + Cereus)
eFlora Treatment Author: Bruce D. Parfitt
Reference: Taylor 1985 The Genus Echinocereus. Timber Press
Echinocereus engelmannii (Parry ex Engelm.) Lem.
NATIVE
Habit: Clump-forming or loose, open mounds generally < 0.7 m diam. Stem: < 60, 5--45(70) cm, 4--9 cm diam, cylindric; ribs 10--13; tubercles +- 0. Spines: (8)15--20 per areole, color and shape variable; central spines 2--7, straight to twisted. Flower: short-funnel- to bell-shaped. Fruit: 20--30 mm, spines glabrous. Chromosomes: 2n=44.
Ecology: Dry habitats; Elevation: < 2400 m. Bioregional Distribution: SnBr, PR, W&I, D; Distribution Outside California: to Utah, Arizona, Mexico. Flowering Time: May--Jun Note: Highly variable, occasionally unclearly divided into varieties, needs study.
Synonyms: Echinocereus munzii (Parish) L.D. Benson; Echinocereus engelmannii var. munzii (Parish) Pierce & Fosberg
Jepson eFlora Author: Bruce D. Parfitt
Reference: Taylor 1985 The Genus Echinocereus. Timber Press
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Botanical illustration including Echinocereus engelmannii

botanical illustration including Echinocereus engelmannii

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Citation for this treatment: Bruce D. Parfitt 2012, Echinocereus engelmannii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=23751, accessed on July 19, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on July 19, 2019.

Echinocereus engelmannii
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© 2009 Keir Morse
Echinocereus engelmannii
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© 2005 James M. Andre
Echinocereus engelmannii
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© 2016 Barry Rice
Echinocereus engelmannii
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© 2017 California Academy of Sciences
Echinocereus engelmannii
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© 2017 California Academy of Sciences
Echinocereus engelmannii
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© 2009 Thomas Stoughton

More photos of Echinocereus engelmannii in CalPhotos



Geographic subdivisions for Echinocereus engelmannii:
SnBr, PR, W&I, D
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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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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.