Bouvardia langlassei Standl.

Bouvardia langlassei Standley, sp. nov
? Bouvardia longiflora latifolia Mart. & Gal. Bull. Acad. Brux. II 1 : 236. 1844.
Shrub, about 1 meter high, the branches stout, subangulate, brown or grayish, hirtellous or villosulous when young, the internodes short; stipules 3-5 mm. long, lobed or laciniate, villosulous; leaves opposite, the petioles slender, 3-7 mm. long, hirtellous or villosulous, the blades ovate, lanceolate, ovate-rhombic, or oblong-rhombic, 1.7-4 cm. long, 0.5-1.4 cm. wide, acute or obtuse at the base, more or less decurrent, long-attenuate to obtuse or even rounded at the apex, thin, subconcolorous, villosulous or glabrate above, hirtellous or villosulous beneath, the lateral veins plane, ascending at an acute angle; flowers terminal, solitary, sessile or subsessile; hypanthium subglobose, 2-3 mm. long, densely villous or tomentulose; calyxlobes linear or lance-linear, 3-9 mm. long, villosulous; corolla white, the tube very slender, 4.5-5.5 cm. long, 1.5-2 mm. thick above, villosulous or hirtellous above, glabrous below, the lobes oblong or elliptic-oblong, 1-1.7 cm. long, 3-5 mm. wide, obtuse or acute, glabrous, spreading; anthers linear, 3-3.5 mm. long.
Type collected at Testla, Michoacan or Guerrero, altitude 1500 meters, June, 1899, E. Langlasse 1049 (U. S. Nat. Herb. no. 386352).
Distribution: Guerrero and Oaxaca.

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