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(Last Modified On 9/16/2013)
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(Last Modified On 9/16/2013)
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Species
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Psychotria santa-rosae Standley
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PlaceOfPublication
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Publ. Field Columbian Mus., Bot. Ser. 7: 113. 1930.
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Note
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TYPE: Colombia, Killip 11530 (US, holotype).
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Description
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Subshrubs to 0.5 m tall, the twigs slender, angular, the hairs diffuse, golden, weak, more dense near the nodes, to 2 mm long, the nodes well spaced. Leaves widely elliptic oblong, 15-20 cm long, 7.0-10.5 cm wide, deltoid at the apex, acuminate, the acumen widely triangular, to 2 cm long, falcate, ultimately acute, widely cuneate to obtuse at the base, rarely truncate, the costa prominulous above, scarcely prominent beneath, the lateral veins 15-17, arcuate, the undulate submarginal vein ca. 4 mm from the margin, the intervenal areas spreadingly reticulate, membranous, conspicuously discolorous, dark violet purple beneath, often with spreading and somewhat stiff golden hairs; petioles slender, to 3 cm long, ciliate; stipules ovate oblong, to 2.5 cm long, with 2 hornlike processes, each triangular, golden ciliate. Inflorescences axillary; peduncle 6-7 cm long, 0.2 cm wide, densely golden villose, the flowers aggregated into 3 heads, the lower 2 heads terminating short branches, to 1 cm long, the upper heads to 2.5 cm long, to 1.8 cm wide, the rachis 1-2 cm long; bracts at the base of the lower branches subulate, to 0.8 cm long; exterior bracts of the heads oblong, to 6.5 cm long, often shortly acuminate at the apex, petaloid, venose, glabrous except the margin densely golden ciliate, the hairs to 1.2 mm long, sometimes the margins with 1- 2 short lobes. Flowers (only 1 hypanthium and calyx seen) sessile, the hypan- thium ca. 1 mm long, densely golden ciliate; calyx teeth 5, subulate, 2.0-2.5 mm long, often unequal, the hairs rigid, tufted. Fruits blue, sessile, rotund, to 3 mm long, the hairs weak, white, few, sulcate, black when dry.
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Habit
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Subshrubs
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Distribution
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known only from Panama and Colombia.
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Note
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Killip indicated that the type collection was a tree to 12 ft tall, while Gentry and Clewell (7026) note it was a subshrub to 0.5 m tall. It bears a close relationship to P. pilosa.
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Specimen
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DARIEN: Summit of Cerro Pirre, 1000-1400 m, Gentry & Cleweill 7026 (MO).
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