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|Family: Cactaceae||View Description||Dichotomous Key|
|Genus: Opuntia||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Opuntia phaeacantha Engelm.
Habit: Shrub. Stem: 0.3--1 m; branches decumbent to +- spreading; segments 11--30 cm, generally obovate; gray-green, glabrous. Spines: 1--4(6) per areole on distal 30--70% of segment, fewer proximally, largest 3--8 cm, generally flat, spreading, distal 1--2 red-brown near base, distally white or straw, smaller 1--3 +- reflexed, generally white or gray. Flower: inner perianth 3.5--4 cm, yellow, base red; filaments white; style white, stigma yellow-green to green. Fruit: 2.5--6.5 cm, juicy, red-purple; interior generally green; areoles 15--32. Seed: 3--6 mm. Chromosomes: 2n=66.
Ecology: Chaparral, Joshua-tree woodland, pinyon/juniper woodland; Elevation: 45--2220 m. Bioregional Distribution: SCoRO, SnBr, e PR, DMtns, DSon; Distribution Outside California: to South Dakota, Kansas, Oklahoma, Texas, Mexico. Flowering Time: May--Jul Note: Hybrids with Opuntia ficus-indica uncommon or rare; stabilized hybrids with Opuntia chlorotica in DMtns (New York Mountains, eastern San Bernardino Co.), southern Nevada, western Arizona called Opuntia ×curvispina Griffiths (2n=44).
Unabridged Note: According to David J. Keil (pers. comm.), on dunes of southwestern San Luis Obispo and northwestern Santa Barbara cos. (s CCo).
eFlora Treatment Author: Bruce D. Parfitt
Jepson Online Interchange
Previous taxon: Opuntia oricola
Next taxon: Opuntia polyacantha
Citation for this treatment: Bruce D. Parfitt 2016. Opuntia phaeacantha, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=35305, accessed on May 30, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 30, 2016.