Pogonopus speciosus (Jacq.) K. Schum.

Pogonopus speciosus (Jacq.) K. Schumann, in Mart. Fl. Bras. 6 6 :
265. 1889.
Macrocnemum speciosum Jacq. Hort. Schoenb. 1: 19. 1797.
Mussaenda speciosa Poir. in Lam. Encyc. Suppl. 4: 37. 1816.
Mussaenda acutiflora Bartl.; DC. Prodr. 4: 370. 1830.
Macrocnemum exsertum Oerst. Vidensk. Meddel. 1852: 45. 1852.
Pogonopus Ottonis Klotzsch, Monats. Akad. Berlin 1853: 500. 1853.
Howardia caracase?isis Wedd. Ann. Sci. Nat. IV. 1: 71. 1854.
Calycophyllum tubulosum Seem. Bot. Voy. Herald 135. 1854. Not C. tubulosum DC. 1830.
Pogonopus exserlus Oerst. Am. Centr. 17. 1863.
Pogonopus caracasensis Nichols. Diet. Gard. 3: 175. 1886.
Chrysoxylon speciosum Kuntze, Rev. Gen. 278. 1891.
Shrub or small tree, up to 10 meters high, the branches reddish-brown or grayish, conspicuouslyle nticellate, the branchlets slender, cinereo-puberulent or short-hirtellous, sometimes glabrate; stipules triangular, 3-5 mm. long, cuspidate, puberulent; petioles stout, 2 cm. long or shorter, semiterete, shallowly sulcate on the upper surface, puberulent; leaf-blades obovate, oval-obovate, or rarely elliptic or ovate, 5-23 cm. long, 2-11 cm. wide, those of the inflorescence much reduced, abruptly acuminate or attenuate at the apex, abruptly or gradually acute to long-attenuate at the base, thin, green above, glabrous or sometimes puberulent, paler beneath and sparsely or densely puberulent, the costa slender, prominent, the lateral veins slender, prominent, 8-13 on each side, arcuate, laxly anastomosing near the margin; cymes few-flowered, arranged in a broad leafy panicle; bracts foliaceous or linear; pedicels stout, 1 cm. long or shorter, puberulent or pilose, the bractlets minute; hypanthium 4-5 mm. long, puberulent or densely fulvous-sericeous; calyx about 1 mm. high, 4 of the lobes minute, cuspidate, the fifth expanded into a large limb, this rounded-ovate, 1-5 cm. long, 1-4 cm. wide, on a slender petiole 1-2.5 cm. long, rounded to acute at the apex, rounded and short-decurrent at the base, purplish, palmately 5-nerved, the nerves very prominent, the secondary ones finely reticulate, glabrous or puberulent; corolla 2.5-3 cm. long, purple, densely or sparsely puberulent or fulvous-sericeous outside, the tube 3-5 mm. thick, the lobes deltoidovate, 3-4 mm. long, acute, puberulent within; stamens short-exserted, the filaments very slender, glabrous, the anthers purplish, 1.5 mm. long; capsule 5-7 mm. long, 5-6 mm. wide, brownish-black, coarsely lenticellate, shallowly bisulcate; seeds about 0.5 mm. long, paleyellowish.
Type locality: Caracas, Venezuela.
Distribution: Guatemala to Colombia and Venezuela; reported also from Mexico.

Pogonopus speciosus là một loài thực vật có hoa trong họ Thiến thảo. Loài này được (Jacq.) K.Schum. miêu tả khoa học đầu tiên năm 1891.