Leptocereusprostratus Britton Rose 1920

Plants shrubby, less than 1 m (3.3 ft) high, with several prostrate to creeping branches. Roots not tuberous. Stems with terminal segments 1-2 cm (0.4-0.8 in) in diameter. Ribs 7, barely notched, with distinctly raised areoles. Spines 15-20, persistent, needle-like, yellow, becoming gray with age, 1-2 cm (0.4-0.8 in) long. Flowers bright yellow, less than 2 cm (0.8 in) long; pericarpels and floral tubes with dense yellow spines. Fruits to 1.5 cm (0.6 in) in diameter, with dense yellow spines. Distribution: western Cuba.

Leptocereus prostratus

Leptocereus paniculatus, photograph by James Mauseth

394 Leptocereus quadricostatus

Leptocereus quadricostatus (Bello) Britton & Rose 1913 Cereus quadricostatus Bello 1881

Plants shrubby with numerous arching or erect branches, often forming thickets 2-4 m (6.6-13 ft) high with trunks to 20 cm (7.9 in) in diameter. Stems dull, dark green, with terminal segments 3.5-6 cm (1.4-2.4 in) in diameter. Ribs 3-4, thin, low. Spines several, persistent, needle-like, to 4 cm (1.6 in) long. Flowers borne from terminal cephalia, tubular, yellowish to greenish white, to 4 cm (1.6 in) long and 2 cm (0.8 in) in diameter; pericarpels and floral tubes with short spines. Fruits globose to ovoid, red at maturity, 3-5 cm (1.2-2 in) long. Distribution: southwestern Puerto Rico.

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