Guettarda calyptrata A. Rich.

Guettarda calyptrata A. Rich, in Sagra, Hist. Cuba 11:21. 1850
Malthiola calyptrata Kuntze. Rev. Gen. 288. 1891.
A shrub or tree, sometimes 6 meters high, the branches grayish or ferruginous, the branchlets stout, compressed, densely ferruginous-puberulent, the internodes short or elongate; stipules oblong-oval, 10-16 mm. long, obtuse or acutish, mucronate, tomentulose outside and pilose along the costa, deciduous; leaves opposite, the petioles very stout, 2-7 mm. long; leafblades oblong to oval or rounded-ovate, 3.5-13 cm. long, 2-7 cm. wide, rounded or very obtuse at the apex, deeply or shallowly cordate at the base, coriaceous, yellowish-green above, sparsely pilose, especially along the nerves, or glabrate, the costa and nerves prominulous but imbedded, the veins often prominulous, beneath paler, minutely whitish-tomentulose, long-pilose along the nerves with appressed hairs, at least when young, the costa and lateral nerves very prominent, the latter 4-7 on each side, ascending at an acute angle, the basal ones divaricate, the veins usually obscure, the margin plane or subrevolute; cymes subcapitate, 3-flowered, the peduncles 0.3-2.5 cm. long, the flowers sessile, the bractlets filiform, about equaling the calyx; calyx and hypanthium tomentulose and long-pilose, the calyx calyptriform, the upper part circumscissile, the persistent base 4-5 mm. long; corolla white, the tube 2.5-5 cm. long, retrorse-pilose with short whitish hairs, slender, about 3 mm. thick in the throat, the 6 lobes obovate-oblong, 8-10 mm. long, rounded at the apex, glabrous within; fruit globose, 12-18 mm. in diameter, minutely tomentulose, 5-6-celled.
Type locality: Near Canasi, Cuba.
Distribution: Woods and thickets, Cuba and the Isle of Pines.

Guettarda calyptrata es una especie de planta fanerógama en la familia de las Rubiaceae. Es originaria de Cuba.

Guettarda calyptrata là một loài thực vật có hoa trong họ Thiến thảo. Loài này được A.Rich. mô tả khoa học đầu tiên năm 1850.