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(Last Modified On 9/19/2013)
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(Last Modified On 9/19/2013)
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Subspecific
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Oxalis spiralis subsp. vulcanicola (D. Sm.) Lourt.
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Synonym
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0xalis vulcanicola D. Sm., Bot. Gaz. 23: 241. 1897. TYPE: Costa Rica, Mont&e au flanc SE du Pods,1900 m, Pittier 869 (US). Xanthoxalis vulcanicola (D. Sm.) Small, N. Amer. Fl. 25(1): 55. 1907. X. "siliquosa" J. Roy. Hortic. Soc. 85: 371. 1960, nom. inval. sine diag. lat.
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Description
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Decumbent or trailing herb (small young plants erect), finely pubescent with yellow or reddish hairs, sometimes glabrate, succulent, to 1.5 m, branched; in- ternodes 2-10 cm long. Leaves with leaflets oblong to suborbicular, cuneate, widely notched, mucronate, 10-35 mm long, 8-23 mm wide, dark green above, violaceous below, the midrib pubescent below, lateral leaflets asymmetric; peti- oles violaceous 2-4 cm long; stipules reddish, hyaline, connate except at the
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Habit
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herb
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Description
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narrow and acute apex, 2.5-5.5 mm long, slightly pubescent. Inflorescences of lateral, axillary and terminal cymes taller than the foliage, (1-)2-17-flowered; peduncles to 12 cm; bracts 1.5-4 mm long and bracteoles ca. 1 mm long, linear, pubescent; pedicels to 16 mm long, articulate near the base. Flowers with the sepals linear, 5-7 mm long, 0.75-1.5 mm wide, narrowed towards the apex, acute, glabrous or somewhat pubescent; petals yellow, obovate, cuneate 12-18 mm long, violaceous-veined; stamens with filaments short, glabrous, the longer stamens ca. 6 mm long with an obtuse ligule near the middle; the shorter stamens ca. 2 mm long, connate halfway up; pistils micro-, meso-, and macrostylous, 6 mm long; the ovary glabrous, the styles very thin, the stigma bifid, capitate papillose. Cap- sule ellipsoid, acute ca. 6 mm long, glabrous, the calyx the same length, the carpels 3-4-seeded; seeds oblong ca. 1 mm long, dark violaceous.
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Note
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Oxalis spiralis ssp. vulcanicola is a common plant of the forest in the sub- paramo and cloudy forest of Central America south to Panama, occurring in volcanic regions up to 3,500 m elevation. It is cultivated as an ornamental in greenhouses, usually in hanging pots, for the beauty of its profusely branched red stems and its abundant bright yellow flowers. Grown in this way the branches are pendulous.
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Distribution
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Central America south to Panama
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Elevation
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up to 3,500 m
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Specimen
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CHIRIQUI: Cerro Punta to headwaters of Rio Caldera, 2250-2500 m, Allen 1425 (F, GH, MO, US). NW of Boquete, Rio Caldera, 6400 ft, Averett 1105 (MO, P). Cerro Punta a Las Nubes, 6000 ft, Correa 1341 (MO). Cerro Punta, Croat 10451 (MO, P, US). 2.7 mi NW of Rio Chiriqui Viejo, 2200 m, Croat 22362 (MO, P). W of Cerro Punta, 2200 m, Croat 22363 (MO). Road to Volcdn Baril, 12 mi above Boquete, Croat 34867 (MO). Alto Respingo, 2800 m, D'Arcy 9959 (MO, P). Potrero Muleto to summit of Volcdn Bard, D'Arcy 10155 (MO, P). Alto Respingo, above Cerro Punta, 3000 m, D'Arcy 10731 (MO). La Popa above Boquete, 1500-2500 m, D'Arcy 10854 (MO, P). La Nevera, below summit of El Barfi, 10,400-10,500 ft, D'Arcy & Hammel 12447 (MO, P). El Volcdn SE of La Nevera, 10,000 ft, D'Arcy & Hammel 12512 (MO). Between Guadalupe and Paso Respingo, 8100 ft, D'Arcy & Hammel 12836 (MO, P). Ridge above Alta Boquete, 7400-8000 ft, D'Arcy et al. 13147 (MO). Volcdn Bard, above Boquete, 3100 m, Davidse & D'Arcy 10270 (MO, P). Boquete, Bajo Choro, 6000 ft, Davidson 418 (F, GH, MO, US). Las Nubes region 7 km NW of Cerro Punta, 7200 ft, Hammel 1383 (MO). Volcdn Bard, E slope, 9000-10,000 ft, Hammel 2812 (MO). Volcdn Barti, E slope W of Finca Yen, 8000 ft, Hammel et al. 6470 (MO). Cerro Punta, roadside W of Paso Respingo, 8200 ft, Hammel et al. 6648 (MO). Alto Pineda, Hammel et al. 6990 (MO). Chiriqui Volcano, 2300 m, Killip 3578 (F, US). Above El Potrero camp, Chiriqui Volcano, 2890-3025 m, Maxon 5318 (F, US). Cerro Punta, Mori & Kallunki 5653 (MO, P). Bajo Grande, 1-3 km from town of Cerro Punta, 2000-2200 m, Nee 10001 (MO, P, US). Boquete, 10,000 ft, Terry 1342 (F, GH, MO, US). Quebrada Grande from Bajo Grande to Paso de Respingo, 2100-2400 m, Wilbur et al. 15118 (MO). Potrero Muleto to summit, Volcan de Chiriqui, 3500-4000 m, Woodson & Schery 467a (MO).
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