Opuntia tomentosa Salm Dyck 1822

nopal de san gabriel, velvet opuntia Opuntia hernandezii A. P. de Candolle 1828 Opuntia oblongata Wendland 1837 Opuntia macdougaliana Rose 1908 Opuntia icterica Griffiths 1913 Opuntia sarca Griffiths ex Scheinvar 1981

Plants shrubby to treelike, 1-5 m (3.3-16 ft) high with main stems to 70 cm (28 in) high. Stem segments obovate to oblong, pubescent, green to dark green, shiny, 15-32 cm (5.913 in) long, 12-16 cm (4.7-6.3 in) wide, with tubercles on young segments. Glochids light yellow, 2-5 mm long. Spines 0-4, partially absent on the segments, needle-like to weakly awl-like, straight, whitish yellow, becoming gray with age, 0.5-1.5 cm (0.2-0.6 in) long. Flowers yellowish orange to red, 4-5.5 cm (1.6-2.2 in) long. Fruits obovoid to globose, red, pubescent, spineless, 3.5-5.2 cm (1.4-2 in) long, 2.5-4 cm (1-1.6 in) in diameter. Distribution: Mexico and Guatemala.

Opuntia triacantha (Willdenow) Sweet 1829 Cactus triacanthos Willdenow 1813 Opuntia militaris Britton & Rose 1919 Opuntia abjecta Small ex Britton & Rose 1923

Plants shrubby, low growing with several clambering or semierect, strongly spiny stems. Stem segments elongate oval to oblong, pale green, smooth, some detaching readily, 4-8 cm (1.6-3.1 in) long. Spines usually 3, white at first, later yellowish, to 4 cm (1.6 in) long. Flowers brownish yellow to cream, becoming reddish with age, to 5 cm (2 in) in diameter. Fruits red, spineless, to 2.5 cm (1 in) long. Distribution: Puerto Rico and Lesser Antilles.

Opuntia tuna (Linnaeus) P. Miller 1796 Cactus tuna Linnaeus 1753

Plants shrubby, to 1 m (3.3 ft) high, with several branches. Stem segments fairly small, obovate to oblong, light green, brownish around the areoles, 8-10 cm (3.1-3.9 in) long, sometimes as long as 16 cm (6.3 in). Leaves tiny, falling away early. Areoles large. Glochids yellow. Spines 2-6, spreading slightly, pale yellow. Flowers light yellow with some reddish tint, to 5 cm (2 in) in diameter. Fruits obovoid, red, to 3 cm (1.2 in) in diameter. Distribution: Dominican Republic, and Jamaica and several other Caribbean islands. Howard and

Opuntia triacantha

Opuntia tuna (Linnaeus) P. Miller 1796 Cactus tuna Linnaeus 1753

Opuntia tomentosa
Opuntia undulata, photograph by Jean-Marie Solichon

Touw (1982) believe Opuntia tunáis one ofthe most difficult of the Caribbean species to interpret, having received several names. It is probably quite widespread in the Caribbean.

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