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(Last Modified On 8/7/2013)
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(Last Modified On 8/7/2013)
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Species
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Diastema hispidum (DC.) Fritsch
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PlaceOfPublication
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Bot. Jahrb. Syst. 50: 407. 1913.
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Synonym
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Episcia hispida DC., Prodr. 7: 547. 1839. TYPE: "Brasil?" [probably from Peru and a dupli- cate of Poeppig 1031], Poeppig (G-DC, holotype not seen; BH, fragment; US, photo). Diastemella bracteosa Oerst., Cent. Gesn. 26. 1858. TYPE: Aguacate, Costa Rica, Oersted 9315 (C, holotype; IDC 2204-2. 72: II 6). Diastema bracteosum (Oerst.) Hanst., Linnaea 34: 438. 1865. Diastema micranthum J. D. Smith, Bot. Gaz. (Crawfordsville) 61: 377. 1916. TYPE: Collinas de Jerico, Santa Clara, Costa Rica, Pittier 7602 (CR, holotype; US, isotype).
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Description
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Slender herbs; stem erect to repent or decumbent, rooting at the nodes, to 15 cm tall; internodes to 5 cm long, reddish toward the lower part, green upwardly, densely pilose. Leaves ovate, 2.5-6.6 cm long, 1.4-3.8 cm wide, the apex acute, the base occasionally oblique, acute to truncate, crenate to serrate, medium green above, pilose to hispid, beneath lighter green, pilose, densely pilose along the veins; petioles 0.5-1.8 cm long, green or reddish, pilose. Inflorescences com- monly in each axil, cymose or racemose, of 1-4 flowers, the peduncles short or
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Habit
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herbs
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Description
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lacking, flowers then appearing fasciculate; bracts lanceolate, 2-5 mm long, green, pilose; pedicels 0.8-1.5 cm long, elongating in fruit, green, pilose. Flowers with a globose floral tube, ca. 4 mm in diam., pilose; calyx lobes lanceolate, 2-5 mm long, 0.5-1.5 mm wide, the corolla white with purple spots within or with lines or spots on the limb, the tube funnelform to cylindric, 0.9-1.8 cm long, pilose, the lobes ca. 1.5 mm long; stamens with the anther locules orbicular; disc of 5 broadly linear glands shorter than the apex of the ovary; style equalling the length of the corolla tube. Capsule globose; seeds dark reddish brown, rhombic.
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Distribution
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In Panama, Diastema hispidum is rare, known only from the province of Vera- guas, also the provenance of D. scabrum. As with D. scabrum, this species is found also in Peru as well as north through Colombia and Central America *to Costa Rica.
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Note
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Its habitat is on damp rocks near streams.
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Specimen
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VERAGUAS: Guabal, Rio Dos Bocas, 16 km NW of Santa Fe, 500 m, Dressler 5017 (PMA). Base of Cerro Tuti, Folsom 3016 (MO, US). Road to Calovebora NW of Santa Fe 2.7 km from Escuela Agricola Alto de Piedra, Mori & Kallunki 5339 (MO).
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