Solanum barbulatum Zahlbr.

Authority

Knapp, Sandra D. 2002. section (Solanaceae). Fl. Neotrop. Monogr. 84: 1-404. (Published by NYBG Press)

Family

Solanaceae

Scientific Name

Solanum barbulatum Zahlbr.

Type

Type. Peru. Cajamarca: Cutervo, 1879, Jelski 56 (holotype, W [F neg. 33048]; frag. F).

Synonyms

Solanum ecuadorense Bitter, Solanum ecuadorense var. nervisequum Bitter, Solanum ecuadorense var. modicepilosum Bitter, Solanum ecuadorense var. glabriusculum Bitter, Solanum ecuadorense var. ilinizae Bitter, Solanum amblophyllum Hook.

Description

Species Description - Shrubs 1.5-5 m tall; young stems and leaves glabrous and shiny, occasionally with a few uniseriate trichomes ca. 0.3 mm long, the young leaves red-papillose; bark of older stems shiny and whitish or gray. Sympodial units difoliate, geminate. Leaves elliptic, widest at the middle, glabrous above, glabrous to pubescent with uniseriate simple or branched trichomes along the veins and in the vein axils beneath, the trichomes occasionally extending to the lamina; major leaves 2.5-13 x 0.8-3.7 cm, with 8-13 pairs of main lateral veins, these often strongly parallel, prominent above and beneath, the apex acute, the base acute; petioles 2-5 mm long; minor leaves differing from the major ones only in size, 1.3-3 x 0.6-1.4 mm, the apex acute, the base acute; petioles 2-3 mm long. Inflorescences opposite the leaves, simple, 0.5-2 cm long, 2-8-flowered, usually glabrous, but occasionally with a few uniseriate trichomes along the rhachis; pedicel scars closely spaced but not overlapping. Buds flattened perpendicular to the pedicel when very young, later globose, the corolla soon exserted from the calyx tube. Pedicels at anthesis deflexed, 0.8-1.3 cm long, tapering from the base of the calyx tube to a slender base 0.5-0.75 mm long. Flowers with the calyx tube broadly cup-shaped, ca. 1 mm long, the lobes broadly deltoid, fleshy, appearing woody in dry specimens, 0.5-1 mm long, glabrous and shiny; corolla white, fleshy, 0.8-1.2 cm diam., lobed 2/3 of the way to the base, the lobes planar or somewhat deflexed at anthesis, the tips and margins of the lobes densely papillose; anthers 2.5-4 x ca. 1 mm, poricidal at the tips, the terminal 0.5 mm thickened and paler, the pores teardrop shaped; free portion of the filaments 0.05-0.1 mm long, the filament tube 0.25-0.5 mm long; ovary glabrous; style straight, 5-6 mm long; stigma a widened area on the tip of the style, the surface minutely papillose. Fruit a globose, green berry, 1-1.5 cm diam y fruiting pedicels woody, erect or deflexed, 1-1.5 mm long, ca. 1 mm diam. at the base. Seeds dark brown, flattened-reniform, 2-4 x 23 mm, the margins incrassate and paler, the surfaces minutely pitted. Chromosome number not known.

Discussion

Solanum barbulatum is similar morphologically to both S. psychotrioides (Colombia) and A. amblophyllum (Peru) but differs from those species in its small flowers and short fruiting pedicels. The trichomes in the vein axils of A. barbulatum are thinner and weaker than those of S. psychotrioides and usually dry white. The bark of S. barbulatum is usually bright white in dry specimens and appears to peel off in thin sections from the stem. Populations of S. barbulatum are more pubescent in Peru and progressively become more glabrous into Colombia, but much variation exists and populational samples are not known.

Common Names

mataperro, choloque de perro

Distribution

In the Andes of southern Colombia, Ecuador and northern Peru, at 2500-4000 m.

Colombia South America| Cauca Colombia South America| Ecuador South America| Azuay Ecuador South America| Bolívar Ecuador South America| Cañar Ecuador South America| Carchi Ecuador South America| Chimborazo Ecuador South America| Cotopaxi Ecuador South America| Imbabura Ecuador South America| Loja Ecuador South America| Napo Ecuador South America| Pichincha Ecuador South America| Tungurahua Ecuador South America| Sucumbíos Ecuador South America| Zamora-Chinchipe Ecuador South America| Peru South America| Amazonas Peru South America| Cajamarca Peru South America| Huánuco Peru South America| Junín Peru South America| La Libertad Peru South America| Piura Peru South America| San Martín Peru South America|