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(Last Modified On 1/10/2013)
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(Last Modified On 1/10/2013)
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Species
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MICONIA THEAEZANS (Bonpl.) Cogn.
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PlaceOfPublication
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Mart. Fl. Bras. 144:419. 1888.
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Synonym
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Melastoma theaezans Humb. & Bonpl. Melast. 17. t. 9. 1816.
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Description
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Younger stems more or less sparsely stellate-pubescent, commonly glabrous at maturity; petioles slender, 1-2 cm. long; leaves varying from lanceolate to obovate- oblong, as much as 15 cm. long, commonly smaller, always acuminate and entire, commonly acute but varying to obtuse or even subrotund at base, 3-nerved, rarely 3-pli-nerved, glabrous above, glabrous beneath or retaining more or less stellate pubescence along the veins; panicle 5-15 cm. long, glabrous to stellate-pubescent, widely branched; flowers mostly short-pediceled; hypanthium cup-shaped, glabrous or sparsely stellate, 2-3 mm. long; calyx-tube briefly prolonged, its lobes depressed- semicircular to triangular, 0.3-0.5 mm. long from the sinus; exterior teeth minute conic thickenings; petals white, broadly elliptic to subrotund, commonly somewhat inequilateral and retuse; stamens isomorphic; filaments flat, gradually narrowed to the summit, geniculate above the middle; anthers obovate or obovate-oblong, flattened tangentially, opening by a wide terminal pore, 4-celled, the septa at right angles to each other and commonly visible through the pore; connective prolonged 0.3-0.5 mm. below the thecae, elevated into a prominent dorsal protuberance and extending below the thecae into two lateral lobes; stigma capitate.
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Distribution
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Southern Mexico and the West Indies to southern Brazil and Bolivia.
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Note
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A highly polymorphic species, variable in size and shape of leaves and somewhat in size of flowers but constant in the structure of its anthers; Cogniaux distinguished seventeen varieties.
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Specimen
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BOCAS DEL TORO: Buena Vista Camp, Chiriqui trail, 900 m., Cooper 6I4. CHIRIQUI: Bajo Chorro, 1800 m., Davidson 96, 97, 344; Chiquero, Boquete district, Davidson 507; Cerro Horqueta, 1950 m., von Hagen 2014; valley of the upper Rio Chiriqui Viejo, White d White I17. COCLEf: crest of Cerro Pajita, 1200 m., Allen 3955.
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