Opuntia chlorotica Engelm. & Bigelow
Family: Cactaceae
(english: dollarjoint pricklypear, pancake pricklypear)
[Opuntia chlorotica var. chlorotica Engelm. & J.M. Bigelow]
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Max Licher  
Trees or shrubs, erect, 2-2.5 m, with spiny, well-defined trunk to 30 cm diam. Stem segments not disarticulating, blue-green, flattened, obovate to circular, 13-21 × 11.5-19 cm, nearly smooth, glabrous; areoles 7-10 per diagonal row across midstem segment, subcircular to elliptic, with basal ridge, 3-6 × 2.5-4 mm; wool tan, aging grayish white. Spines absent or usually in distal areoles to evenly distributed over entire stem segment, yellow, aging red-brown to blackish, straight or weakly curved, ± acicular, deflexed, or some erect in marginal areoles; larger spines 0-7 per areole, terete or basally flattened, 25-45 mm, usually accompanied by few straight to wavy bristle-spines. Glochids crowded in narrow crescent along adaxial margins, longer toward base of areole margins, subapical tuft absent or poorly developed, yellow, aging reddish brown, to 14 mm. Flowers: inner tepals yellow (sometimes with reddish blush near base), abaxially reddish streaked along midveins, broadly spatulate-apiculate, 18-30 mm; filaments white to yellow; anthers; style and stigma lobes white, yellowish, or pale green. Fruits red, barrel-shaped, 30-60 × 18-40 mm, fleshy (often mummifying), glabrous, spineless; umbilicus 6-9 mm deep; areoles 40-68. Seeds yellowish, 3.5-4 × 3-3.5 mm, 1.5-1.8 mm thick, reniform to subcircular, flattened, often warped; girdle protruding 0.1-0.5 mm. 2n = 22. Flowering spring-summer (Apr-Jul). Desert grasslands, woodlands, chaparral, desert flats, rocky ledges, hills, canyons; 600-2400 m; Ariz., Calif., Nev., N.Mex., Utah; Mexico (Baja California, Baja California Sur, Sonora). Opuntia chlorotica hybridizes with O. santa-rita in southeastern Arizona and with the hexaploid O. phaeacantha forming the tetraploid O. ×curvispina in areas of Arizona, California, and Nevada.

Plant: tree or shrub 2-2.5 m tall, with spiny trunks to 30 cm long. PADS blue-green, obovate to circular, glabrous, 13-21 cm long, 11.5-19 cm broad. AREOLES 7-10 in a row diagonal across midpad, subcircular to elliptic with a basal ridge, 3-6 mm long, 2.5-4 mm wide; wool tan, aging grayish white Leaves: SPINES absent or mostly in distal areoles to well distributed over entire pad, yellow, aging red-brown to blackish, straight or weakly curved, acicular, deflexed except some erect in pads' marginal areoles; larger spines (0-)1-8+ per areole, terete or basally flattened, 2.5-4.5 cm long, usually accompanied by few straight to wavy bristle-spines. GLOCHIDS crowded in narrow marginal apical crescent, increasing in length toward base of areole, the subapical tuft absent or poorly developed, yellow, aging reddish brown, to 14 mm long Flowers: inner tepals yellow (sometimes with reddish blush at base), broadly spatulate-apiculate, 1.8-3 cm; filaments white to yellow; style and fresh stigmas white to yellowish or very pale green Fruit: FRUITS red, barrel-shaped, fleshy (often mummifying), glabrous, spineless, 3-5 cm long, 2-4 cm in diameter, the umbilicus 6-9 mm deep; areoles 40-68. SEEDS yellowish, reniform to subcircular, flattened but often warped, 3.5-4 mm long, 3-3.5 mm wide, 1.5-1.8 mm thick; girdle protruding 0.1-0.5 mm. Misc: Rocky ledges, hills, canyons, or uncommonly desert flats, desert grasslands, woodlands and chaparral; 600-2400 m (1900-7900 ft); Apr-Jul REFERENCES: Pinkava, Donald J. Cactaceae. 2003. J. Ariz. - Nev. Acad. Sci. Volume 35(2). REFERENCES: Pinkava, Donald J. Cactaceae. 2003. J. Ariz. - Nev. Acad. Sci. Volume 35(2).
Benson 1982, FNA 2003, Pinkava 2003
Common Name: dollarjoint pricklypear Duration: Perennial Protected Status: Salvage restricted status in Arizona. Spines: Absent or mostly in upper areoles, they are yellow and aging red brown to blackish while being straight or weakly curved, the larger spines are 0-7 per areole and are terete or basally flattened, 25-45 mm, with usually with few straight to wavy bristle spines, the glochids are crowded in a narrow crescent along the upper margins of the areoles and are yellow but aging reddish brown and reach 14 mm. Flowers: Flower 4-6 cm diameter by 5-7.5 cm long with yellow inner tepals (sometimes with reddish blush near base) that are broadly spatulate and apiculate, 2-3 cm, with filaments that are white to yellow, while the style and fresh stigmas are white to yellowish or very pale green. Fruits: Fleshy red and barrel shaped, 30-60 mm long by 18-40 mm wide, they are glabrous and spineless with 40-68 areoles. Ecology: Found on rocky ledges on hills, in canyons, and rarely on desert flats, in desert grasslands, woodlands, and chaparral from 2,000-8,000 ft (610-2438 m), flowers April-June, fruits in summer or fall. Distribution: s CA, s NV, AZ, sw NM; south to c MEX. Notes: Told apart from other Opuntia by the well defined trunk, the paucity of spines where areoles are mostly dense patches of yellow glochids with few yellow, generally deflexed spines; and the mostly orbicular pads. Ethnobotany: The raw fruits were eaten. Etymology: Opuntia from ancient root puncti for prickled, while chlorotica means pale yellowish green. Synonyms: None Editor: SBuckley 2010, FSCoburn 2015
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Leslie Landrum  
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Leslie Landrum  
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Frankie Coburn  
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Frankie Coburn  
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Patrick Alexander  
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George Ferguson  
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Ana L. Reina-Guerrero  
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Ries Lindley  
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Thomas Van Devender  
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Ana L. Reina-Guerrero  
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Ries Lindley  
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Thomas Van Devender  
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