Rondeletia umbellulata Sw.

Rondeletia umbellulata Sw. Prodr. 41. 1788
Shrub, 3 meters high, the branches stout, terete or subcom pressed, grayish-brown, rimose, densely long-pilose when young; stipules broadly ovate-deltoid, 8-15 mm. long, acute.or acuminate, long-cuspidate, very thin, brown, erect, appressed-pilose; leaves opposite, the petioles slender, 8-12 mm. long, pilose, the blades elliptic or lance-elliptic, 7-10 cm. long, 2-3.5 cm. wide, acute or acuminate at the base, acuminate or attenuate at the apex, chartaceous, dark-green above, pilose-strigillose or glabrate, the venation impressed, beneath pale, setose-pilose, especially along the veins, the venation prominent, the lateral veins 5 or 6 on each side, arcuate, ascending at an angle of about 45°, the margins plane or subrevolute; inflorescence axillary, the peduncles slender, nearly or quite as long as the leaves, or sometimes much shorter, trichotomous, each branch terminating in a dense many-flowered capitate cyme, the flowers sessile or nearly so; bracts foliaceous, 2.5-4.5 cm. long, the bractlets linear or lanceolate, foliaceous, 7-12 mm. long; hypanthium densely sericeous-pilose; calyx-lobes 5, lanceolate or lance-oblong, 3-4 mm. long, acute or obtuse, foliaceous, sparsely appressed-pilose, erect; corolla yellowish, densely retrorse-pilose outside with white hairs, the tube cylindric, scarcely ampliate above, 8-9 mm. long, the 5 lobes rounded, about one fourth as long as the tube, puberulent within, the throat annular-thickened; anthers included, linear-oblong, 2 mm. long, the filaments very short.
Type locality: Jamaica. Distribution: Jamaica.

Rondeletia umbellulata là một loài thực vật có hoa trong họ Thiến thảo. Loài này được Sw. miêu tả khoa học đầu tiên năm 1788.