Gesneria pumila Sw.

Gesneria pumila Swartz

Gesneria pumila Swartz, Prodr. 90, 1788.

Plants acaulescent, suffruticose to frutescent: stems woody, decumbent, pendent, or erect, to 1 m long, 3–7 mm in diameter, bark rugose, reddish to brownish gray, glabrescent or glabrous, usually verrucose, sometimes resinous, pith reddish; unbranched or branches few from the base.

Leaves alternate, often crowded at stem apices: petioles sulcate, flattened, or nearly terete, 0.2–2.1 cm long, 1–2 mm wide, green to reddish-brown, glandular to densely pilose or glabrous, becoming verrucose with age, sometimes resinous; blade oblanceolate to subspathulate or obovate, occasionally falcate, 1.6–15.1 cm long, 0.6–4.9 cm wide, membranous to coriaceous, sometimes crisped and subbullate, base acute, cuneate to subcordate, margin serrulate, crenate, dentate, to grossly serrate, occasionally ciliate, apex rounded to acute, adaxial surface dark green, pilose to glabrous, if pubescent, with glandular and nonglandular trichomes occasionally with broad bases, sometimes scabrous, glossy or dull, abaxial surface lighter green, pilose to glabrescent with reddish or colorless appressed trichomes along the prominent veins, or glabrous, often verrucose at the veins.

Inflorescences few to many, axillary in a reduced compound dichasium of 1–4 flowers: peduncles terete to subquadrangular, flexuose or curved, 0.1–5.5 cm long, 1 mm wide, green to reddish-brown, densely pilose to glabrous, occasionally with reddish articulate trichomes, resinous and/or glandular; bracts 2, linear-lanceolate to elliptic, green or red, 3–7 mm long, 0.5–1.5 mm wide, cuneate at the base, margin sometimes ciliate, apex acute, upper surface glandular; pedicels terete, 0.3–1.6 cm long, elongating in fruit, 1–1.5 mm in diameter, green to red, pilose to glabrous, sometimes glandular-resinous; floral tube cyathiform to turbinate or nearly spherical, 2–4 mm long, 2–4 mm wide, green to reddish, pilose with glandular and nonglandular trichomes to glabrous, sometimes resinous; calyx lobes 4–5, erect, aestivation open, basally connate for 1–2 mm, each subulate, lanceolate, elliptic, ensiform to ovate, 0.2–1.2 cm long, 1–5 mm wide, apex acute to acuminate, margin entire to serrulate, often ciliate, outside green to reddish-brown, sparsely pilose to glabrous, occasionally resinous and glandular, inside green or red, glandular-puberulent to glabrous, veins 3, prominent or obscure; corolla narrowly campanulate to campanulate, tube 0.8–3.5 cm long, 2–4 mm wide at base, 0.5–1.2 cm wide at the mouth exterior green to creamy white and reddish at base, to salmon-pink or red, pilose to glabrous, or glandular, interior essentially glabrous, but for a few glandular hairs at the mouth; limb 5-lobed, spreading, 0.8–2.3 cm wide, each lobe semiorbiculate, upper 2 lobes erect, 0.3–1.5 cm wide, lateral and basal lobes reflexed, 0.3–1.2 cm wide, margins entire to dentate, usually glandular-ciliate; stamens 4, rarely 5, adnate to the base of the corolla for less than 1 mm, seldom exserted beyond the limb, filaments linear, curved or straight, 0.8–3.5 cm long, about 1 mm wide, slightly wider at the base, pink to red or rose, becoming lighter at the apex, sparsely pilose to glabrescent; anthers oblong or orbicular-sagittate, 0.5–2.0 mm long, 1–2 mm wide, reddish or white abaxially, arranged side by side and seldom coherent, or connivent in 2 pairs at their apices; ovary inferior, apex sometimes tomentose, disc annular to pentagonal, white to reddish, 1–3 mm wide, style linear, widest at the base, 0.7–3.5 cm long, 1 mm wide, pink to red, glabrescent or glabrous, stigma clavate, stomatomorphic, papillate, white to green or reddish.

Capsule nearly spherical to elliptic, 0.3–1.0 cm long, 2–8 mm wide, green to gray-brown, often inverted at maturity, glabrescent except occasionally pilose along the costae: costae usually obscure; seeds fusiform to rhombic, 0.5–1.0 mm long, 0.5 mm wide, red to brown.

Gesneria pumila là một loài thực vật có hoa trong họ Tai voi. Loài này được Sw. mô tả khoa học đầu tiên năm 1788.