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(Last Modified On 6/3/2013)
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(Last Modified On 6/3/2013)
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Species
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Pollalesta discolor (H.B.K.) Aristeguieta,
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PlaceOfPublication
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Bol. Soc. Venez. Ci. Nat. 23(103): 275. 1963
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Synonym
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Dialesta discolor H.B.K., Nov. Gen. Sp. P1. 4: 45. 1820. TYPE: Colombia, Humboldt & Bonpland s.n. (not seen). Oliganthes discolor (H.B.K.) Schultz-Bip., Linnaea 20: 502. 1847.
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Description
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Large shrub to small tree; branchlets subterete, often obscured by the densely scurfy indument. Leaves petiolate; petioles 5-25 mm long; blades elliptic to ovate, acute to acuminate at the apex, rounded to obliquely attenuate at the base, marginally entire, 6-18 cm long, 3.5-6 cm broad, plane and glabrous to strigillose above, lanulose and resinous beneath, lateral veins ascending, 5-12 pairs, immersed above, prominulous beneath. Inflorescences shortly pedunculate in dense corymbs, these aggregated in irregular corymbiform panicles. Heads with 2 florets; involucre cylindric to narrowly campanulate, the involucral bracts fewer than 10, equitant, imbricate, 4-6 mm long, the outer bracts squamiform, lanulose, the
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Habit
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shrub to small tree
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Description
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inner bracts obovate, scarious, often with a green mid-portion or purple tip, 4-5 mm long; corolla tubes cylindric, white, 4-5 mm long, 5-lobed, the lobes linear- deltoid, 1.5-2.5 mm long; stamens 5, the anthers 2 mm long, apically acute, acutely sagittate at base; styles 5-6.5 mm long, bilobed, the branches 1-2 mm long, apically acute, antrorsely puberulent. Achenes narrowly turbinate, 1.8-2.2 mm long, 8-10-costate, very sparsely puberulent; pappus biseriate, the inner series of 5-8 narrowly oblong bristles 3-3.5 mm long, apically lacerate, the outer series of 5-10 bristles, 0.2-0.4 mm long.
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Distribution
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occurs from Costa Rica to Colombia and Venezuela.
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Note
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The trees, with white heads, often reach 13 m in height.
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Specimen
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CHIRIQUI: Jaramillo, Boquete, 4500 ft, Davidson 1276 (MO). PANAMA: 3 mi from Interam. Hwy. on Cerro Campana dirt road, Correa & Dressler 392 (MO). Road to Cerro Campana, 2000 ft, Tyson 6433 (MO). VERAGUAS: Hills W of Sona, Allen 1036 (MO).
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