Bouvardia rosei Standl.

Bouvardia rosei Standley, sp. nov
Shrub, the branches stout, subangulate, grayish, pruinose-puberulent when young, the internodes short; stipules 3-5 mm. long, the base triangular, the apex subulate-cuspidate; leaves opposite, sessile, the blades oval-ovate, broadly ovate-oval, or ovate, 2-3.5 cm. long, 0.8-1.5 cm. wide, rounded or obtuse at the base, obtuse to short-acuminate at the apex, rather thick, subconcolorous, minutely scaberulous above when young, glabrous beneath; inflorescence terminal or axillary, usually 3-5-flowered, the flowers sessile; hypanthium 4 mm. long, pruinosepuberulent; calyx-tube about 2 mm. long, the lobes linear or lance-linear, 7-11 mm. long, acute to attenuate, scaberulo-ciliolate ; corolla white, glabrous outside, the tube slender, 4.5-6 cm. long, 2.5 mm. thick above, the lobes oblong or elliptic-oblong, 12-16 mm. long, 4.5-6 mm. wide, acute or acutish, sparsely villosulous within; anthers oblong-linear, 4 mm. long, included; style-branches slender, about 5 mm. long.
Type collected in the Sierra Madre, Durango, August 16, 1897, J. N. Rose 3516 (U. S. Nat. Herb. no. 302493).

Bouvardia rosei là một loài thực vật có hoa trong họ Thiến thảo. Loài này được Standl. mô tả khoa học đầu tiên năm 1921.