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Vascular Plants of California
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Opuntia ×occidentalis


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.
eFlora Treatment Author: Bruce D. Parfitt, except as noted
Scientific Editor: Bruce D. Parfitt, Douglas H. Goldman, Bruce G. Baldwin, Thomas J. Rosatti.
Genus: OpuntiaView DescriptionDichotomous Key


Common Name: PRICKLY-PEAR
Habit: Shrub, tree; roots fibrous [tuberous]. Stem: generally erect, < 6 [12] m; segments generally flat (+- cylindric), generally firmly attached; tubercles 0 to +- developed; ribs 0. Leaf: small, conic, fleshy, deciduous, present on young stems, ovaries. Spines: 0--many per areole, cylindric or flat, tip smooth or barbed, epidermis persistent; glochids generally many. Fruit: juicy, fleshy or dry; wall thick, bearing areoles; spiny or not. Seed: in a bony, +- white aril.
Etymology: (Possibly from Papago name ("opun") for this food pl; or for a spiny plant of Opus, Greece) Note: Spines smaller, fewer in shade forms; yellow spines blacken in age. Spineless stems, ovaries, and fruit generally with glochids, these occasionally long, conspicuous; hybridization common. Taxa with cylindric to club-shaped stems moved to Cylindropuntia, Grusonia.
eFlora Treatment Author: Marc Baker, Lucas C. Majure & Bruce D. Parfitt
Opuntia ×occidentalis Engelm. & J.M. Bigelow
NATIVE
Habit: Shrub. Stem: < 1 m; branches sprawling to +- erect; segments 19--35 cm, generally obovate, gray-green, glabrous. Spines: 3--6 in 90--100% of areoles, generally flat, generally straight, longest 2.5--5 cm, +- spreading, distal 1--2 yellow, coated +- white, base brown, proximal 2--4 shorter, +- reflexed. Flower: inner perianth yellow to deep pink; filaments generally yellow; style pink to white, stigma green. Fruit: 4.5--5 cm, juicy, red-purple; areoles 24--30. Seed: 4--5.5 mm. Chromosomes: 2n=66.
Ecology: Chaparral; Elevation: 7--400 m. Bioregional Distribution: SCo, w edge PR. Flowering Time: Mar--May Note: Opuntia littoralis × (Opuntia engelmannii × Opuntia phaeacantha). Hybridizes with species of same chromosome number.
Unabridged Synonyms: Opuntia ficus-indica, misappl.
Jepson eFlora Author: Marc Baker, Lucas C. Majure & Bruce D. Parfitt
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Marc Baker, Lucas C. Majure & Bruce D. Parfitt 2019, Opuntia ×occidentalis, in Jepson Flora Project (eds.) Jepson eFlora, Revision 7, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=35299, accessed on April 23, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 23, 2024.

No expert verified images found for Opuntia ×occidentalis.



Geographic subdivisions for Opuntia ×occidentalis:
SCo, w edge PR.
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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).





 

Data provided by the participants of the  Consortium of California Herbaria.
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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.
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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 (fruiting time in some monocot genera).