Comments
provided by eFloras
Opuntia triacantha occurs in the flora area only on Big Pine Key, Florida. It is in the Center for Plant Conservation’s National Collection of Endangered Plants.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Shrubs, prostrate (to erect), clambering, to 0.6 m. Stem segments easily detached, green, flattened, elliptic, 5-18 × 3-7 cm, slightly tuberculate, glabrous; areoles 3-4 per diagonal row across midstem segment, subcircular, 4 mm diam.; wool whitish. Spines 1-3(-4) per areole, ± evenly distributed on stem segment, porrect to spreading, gray to whitish or cream, tipped black, straight, acicular, to 40 mm, barbed. Glochids yellow, aging brown, 4-9 mm. Flowers: inner tepals yellow throughout, 20-25 mm; filaments pale green to yellow; anthers yellow; style pale green or white, pink tinged; stigma lobes color unknown. Fruits red, ovoid to obovoid, 25-30 × 15-20 mm, fleshy, glabrous, bearing few areoles, spineless. Seeds tan, subcircular, somewhat flattened, 2.5 mm diam.; girdle protruding less than 1 mm. 2n = 22.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
provided by eFloras
Sandy areas on old limestone reefs, openings in tropical forests; 0m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
provided by eFloras
Cactus triacanthos Willdenow, Enum. Pl., suppl.: 34. 1814; Opuntia abjecta Small ex Britton & Rose; O. militaris Britton & Rose
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Cuban Cactus Scrub Flora Associations
provided by EOL authors
Lying in the rainshadow of upwind mountains, the Cuban Cactus Scrub ecoregion is a semi-arid region of the Caribbean Basin supporting a thorny cactus scrub. The most characteristic and abundant flora species correspond to the xeromorphous coastal and subcoastal scrubland with abundant cacti succulents, also called coastal manigua. Cactus associate species to Opuntia triacantha include: O. dillenii, Harrisia eriofora, H. taetra, Pilosocereus robinii and Dendrocereus nudiflorus. Evergreen shrubs and small trees include: Bourreria virgata, Capparis cynophallophora, Eugenia buxifolia, Bursera glauca and B. cubana.
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- C.Michael Hogan
- bibliographic citation
- C.Michael Hogan. 2011. Cactus. Topic ed. Arthur Dawson. Ed.-in-chief Cutler J.Cleveland. Encyclopedia of Earth. National Council for Science and the Environment. Washington DC
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- C. Michael Hogan (cmichaelhogan)
Opuntia abjecta: Brief Summary
provided by wikipedia EN
Opuntia abjecta is a short cactus, perhaps to 15(25) cm tall. It occurs in the Florida Keys and has been conflated with O. triacantha. Recent work shows that the two taxa are distinct. In addition to morphological and phylogenetic (DNA) differences, O. triacantha occurs in Cuba, whereas O. abjecta occurs in Florida. Currently It is Listed as critically by the IUCN Red List.
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