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(Last Modified On 5/15/2013)
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(Last Modified On 5/15/2013)
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Species
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Solanum erythrotrichum Fern.
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PlaceOfPublication
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Proc. Amer. Acad. Arts 35: 561. 1900.
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Note
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TYPE: Guatemala, Tiirckheim 1381 (GGH, K).
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Description
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Shrub 1 mn tall; twigs finely tomentose with appressed, ferrugineous, porrect stellae which have reduced midpoints, armed with short, stout, flattened, re- curved, dark-colored spines, 2-3 mm long. Leaves unarmed, 12-15 cm long, broadly elliptical, irregularly sinuate-dentate, apically acuminate to obtuse, basally obtuse, sometimes dimidiate, above with dispersed, subsessile, porrect stellae, their midpoints absent or much reduced, beneath with stalked or sessile, long-armed multangulate white hairs, their midpoints nearly absent; petioles 2-3 cm long, unarmed; minor leaves sometimes present. Inflorescence lateral, several- flowered, congested on a finely tomentose, erect peduncle 1.5-3.5 cm long; pedicels 5 mm long, becoming stout but not longer in fruit. Flowers with the calyx 10 mm long, deeply lobed, the lobes sub-foliaceous, 8 mm long, lanceolate, tomentose outside and dispersed-pubescent inside with sessile, porrect, fer- rugineous stellae, the midpoints much shorter than the arms; corolla deep purple to purplish white, 3 cm across, lobed nearly to the base, the lobes unequal, lanceolate, tomentose outside; anthers 6-7 mm long, tapering, opening by rela- tively large terminal pores; ovary tomentose, the style pubescent, more so on the lower half, exceeding the anthers by 4 mm. Fruit globose, 12 mm across (im- mature), covered with fine stellae, ?glabrescent.
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Habit
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Shrub
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Note
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Solanum erythrotrichum is distinctive in the field in its purple flowers, the only other Panamanian member of this subgenus approaching it being S. subinerme Jacq., which differs in its truncate calyx and which has not been found in Chiriqui Province. On the herbarium sheet it may be recognized by its subfoliaceous calyx and the stellate hairs of the fruit. Panamanian material differs from the typical Guatemalan material in its pubescence and flowers. The Guatemalan plants have abundant, long midpoints on the stellate hairs of twigs, petioles, and pedicels which Fernald referred to as "long slender naked hairs." It has somewhat smaller flowers, and larger, stouter spines.
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Specimen
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CHIRIQUI: N side of Cerro Pando, 6,300 ft, D'Arcy 5400 (MO). La "Pandura" N of Alto Lino, 4,300 ft, Paul 880 (US).
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