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(Last Modified On 3/20/2013)
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(Last Modified On 3/20/2013)
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Subspecific
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Tetrorchidium gorgonae subsp. robledoanum (Cuatr.) Webster
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PlaceOfPublication
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Ann. Missouri Bot. Gard. 54: 199, 1967
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Synonym
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Tetrochidium robledoanum Cuatr., Brittonia 9: 81, 1957.
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Description
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Tree or shrub 4-7 m high; dioecious, branches minutely strigose. Leaves chartaceous; petioles 0.5-1.5 mm long; stipules triangular, pubescent, ca 1 mm long; blades elliptic to obovate, 7-12 cm long, 3-5.5 cm broad, sparsely strigose with malpighiaceous hairs on both faces, the midrib and primary veins (4-6 on a side) prominently raised on both faces, the veinlets forming a distinct reticulum, the base cuneate, the margins subentire (with 2-4 inconspicuous glandular teeth on each side), narrowed to an abruptly short-acuminate tip. Inflorescences axil- lary; c thyrses 2-6 cm long, rachis densely strigose; y racemes 2-6 cm long, densely strigose. Staminate flowers subsessile; calyx-lobes triangular, densely strigose, ca 0.8-0.9 mm long; anthers subsessile, 0.8-0.9 mm wide. Pistillate flowers with pedicels 1.3-2 mm long; calyx-lobes ovate, obtuse, strigose, 0.9-1.1 mm long; disc cupulate, 0.8-0.9 mm high, enclosing 1/2 the ovary or more at anthesis; ovary glabrous, 2-locular, the stylar cap nearly disciform, 0.4-0.5 mm high, 1.2-1.8 mm broad. Fruits not seen.
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Habit
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Tree or shrub
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Distribution
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Eastern Panama, Colombia, and (fide Cuatrecasas) Ecuador.
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Specimen
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CANAL ZONE: divide betw Rio Pina and Rio Media, W of Gatun Locks, Johnston 1688 (MO). PANAMA: Cerro Jefe, Duke 9415 (MO).
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Note
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The two collections from Panama unfortunately have only flowers, and fruit- ing collections are much desired. The plant from the Canal Zone appears to be very similar to the type collection of subsp. robledoanum except in its more proxi- mally inserted petiolar glands. The collection from Gerro Jefe has a placement of glands more like that of subsp. robledoanum, but it also shows a certain similarity to T. euryphyllum. The exact status of all these taxa cannot be resolved until more complete Panamanian collections, with flowers of both sexes as well as fruits, are obtained.
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