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(Last Modified On 3/7/2013)
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(Last Modified On 3/7/2013)
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Species
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GUAREA GUIDONIA (L.) Sleumer
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PlaceOfPublication
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Taxon 5: 194. 1956.-Fig. 6.
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Synonym
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Samyda guidonia L., Sp. PI. 443. 1753. Melia Guara Jacq., Enum. Syst. PI. 20. 1760. Trichilia Guara (Jacq.) L., Sp. PI. ed. 2, 551. 1762. Guarea Guara (Jacq.) P. Wilson, N. Am. Fl. 25: 272. 1924. Guarea trichilioides L., Mant. P1. 228. 1771. Guarea trichilioides var. brachystachya C. DC., Monogr. Phaner. 1: 544. 1878. Guarea trichilioides var. pallida C. DC., loc. cit. 544. 1878. Guarea trichilioides var. pachycarpa C. DC., loc. cit. 544. 1878. Guarea trichiloides var. colombiana C. DC., Ann. Conserv. Jard. Bot. Geneve 10: 138. 1907. Guarea trichiloides var. decandra C. DC., loc. cit. 139. 1907. Guarea rubra C. DC., Monogr. Phaner. 1: 556. 1878. Guarea Langsdorffiana C. DC., loc. cit. 557. 1878. Guarea subspicata C. DC., Ann. Conserv. Jard. Bot. Geneve 10: 143. 1907. Guarea puberula Pittier, Bol. Soc. Venez. Cienc. Nat. 4: 357. 1938.
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Description
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Tree to 25 m. tall, sometimes shrubby. Leaves 10-50 cm. long; leaflets 4-7 pairs (occasionally there is a terminal leaflet), elliptical or lance-elliptical, rarely broadly elliptical, the base subacute to acute, the apex obtuse to acuminate-subacute, glabrous to puberulent along the veins above and below, the rachis glabrous, the blade rarely minutely scattered-papillose. Inflorescences axillary, 4-35 cm. long, paniculate, frequently strict, glabrate to sparsely pubescent. Flowers white to yellow, rarely pink, 4- to 5-merous; calyx shallowly cupulate, shallowly to! deeply lobed, lobes rounded to deltoid, occasionally apiculate, glabrate to puberulent particularly on the apiculum; petals scattered-puberulous to densely puberulent without, glabrous to puberulent within; staminal tube nearly entire to, crenulate to deltoid- dentate, glabrous; anthers 8 (-10); ovary sparingly to densely pubescent, borne on a glabrous gynophore. Capsule light to dark-rufous-brown, frequently lenticellate, globose to fig-shaped, nitid-glabrous to pulverulent, 4(-5)-valved, 4(-5)-celled, the cells 1-seeded; seeds about 3/4 covered by a red aril; the largest capsule seen about 1.5 cm. in diam.
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Habit
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Tree
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Distribution
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Widely distributed in the American tropics.
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Specimen
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CANAL ZONE: along Quebrada Morito, Johnston 1578, 1634; mouth of Rio Chagres, Johnston 1772; Arraijan, Woodson, Allen & Seibert 780; Barro Colorado Island, Woodworth & Vestal 747; Gatuncillo, Piper 5626. CHIRIQUI: Boquete District, Bajo Choro, Davidson 712. DARIEN: Boca de Cupe, R. S. Williams 685; Marraganti, R. S. Williams 633. PANAMA: Rio Tocumen, Standley 29343, 29352.
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Note
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While this species has long been known as Guarea trichilioides through much of its range and as G. Guara in Panama, Sleumer (loc. cit. 1956) pointed out the existence of an earlier name for the species in another genus. This name is based on interpretations of Plumier's descriptions of 1703 in Nova Plarntarutm Ameri- canum genera, and the description and plate in the Burmann edition of Plumier's work, Plantarum Americanarum, of 1755-60 and the intervening and subsequent history of use by other authors. Urban had identified the plate in 1920 as G. trichilioides but had not made the nomenclatural transfers required by priority. There can be no doubt about the identity of the plant illustrated. Since the correct identification of the plate also provides an earlier name for the genus Guarea, Sleumer proposed the conservation of the generic name Guarea Allemand ex L. over the generic name Samyrda L. but the Committee for Sperma- tophyta Conservation of Generic Names felt that this was unnecessary as Samyda L. is automatically rejected under the present wording of the Code (Regnum Vege- tabile 23: Art. 14, Note 3. 1961) (See, Taxon 9: 15. 1960).
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