Buddleja americana L.

Shrub or small tree 2-5(-10) m high, the new growth herbaceous and pos-sessing a tomentum of grayish-white stellate trichomes, the older branches be-coming glabrous and developing brownish bark. Leaves with petioles 2-20 mm long; blades quite variable in shape but generally lanceolate to broadly lance-ovate or lance-elliptic, membranous, apically acute or acuminate, basally attenuate to obtuse, often decurrent along thte petiole basally, (3-)6-22 cm long, 1.8-9 cm broad, usually serrate or serrulate (infrequently entire), the lower surface with a rather loose vesture of stellate trichomes 0.4-1 mm broad underlaid by smaller glandular trichomes, the upper surface glabrous or with scattered stellate trichomes, the midvein raised beneath, the secondaries 8-18 in number, arcuate-ascending, anastomosing, the tertiaries reticulate, usually apparent. Inflorescences condensed-paniculate, 4.5-25 cm long, branching at the base, typically with only 1 or 2 orders of branching, the cymules compressed, subsessile or short-pedunculate, borne in a racemose and generally opposite fashion on the floriferous stalks, attaining a diam of 6-17 mm and containing 3-10 flowers. Flowers sessile or with pedicels to 1.5 mm; calyx funnelform-campanulate, externally stellate-pubescent, the tube 1.5-2.5 mm long, the lobes 1.3-2.5 mm long, lanceolate; corolla yellow or white, funnelform, stellate-pubescent externally, internally with a conspicuous V-shaped or cresent-shaped band of simple unicellular pitted trichomes on the lobes (the in-dividual trichomes 0.4-1 mm long), glabrous in the tube, the tube 2-3 mm long, the lobes 2-3 mm long, lanceolate or slightly ovate-lanceolate, valvate in bud; anthers 0.7-1 mm long, narrowly ovate or oblong, the filaments adnate to the corolla-tube up to the throat, the free-portion less than 1 mm long; ovary 1.5-3 mm long, ovoid, ex-ternally stellate-pubescent, the ovules so per locule, the style to 1 mm long, the stigma ca 1 mm long, apically emarginate, the placenta an axial column to 1 mm broad remaining attached basally after dehiscence of the capsule. Capsules nar-rowly ovoid or subcylindrical, 3.5-6 mm long; seeds slender-elongate, compressed, winged at each pole, 0.8-1.3 mm long.

It is a tropical plant. It grows in the edge of forests in mountains.