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Project Name Data (Last Modified On 8/19/2013)
 

Flora Data (Last Modified On 8/19/2013)
Species Amaioua corymbosa H.B.K.
PlaceOfPublication Nov. Gen. Sp. 3: 419. 1820.
Note TYPE: Colombia, Humboldt & Bonpland (B, not seen, photo MO).
Synonym Gardenia hexandra Willd. ex R. & S., Syst. Veg. 5: 243. 1819. TYPE: America Merid., Humboldt & Bonpland, not seen. Amaioua fagifolia Desf., Mem. Mus. Hist. Nat. 6: 14. 1820. TYPE: French Guiana, Martin (C, not seen, photo MO). Amaioua guianensis Hemsl., Biol. Centr. Amer., Bot. 2: 39. 1881, not A. guianensis Aubl. 1775. Nomen nudum.
Description Shrubs or trees to 40 ft tall, the branches terete, the nodes well spaced; branchlets angular, the leaves often crowded at the apex. Leaves oblong, often widely so, the large blades about twice as long as wide, 9-23 cm long, 2.5-12.5 cm wide, obtuse at the apex, shortly acuminate, the acumen to 1.2 cm long, basally inequilateral or equilateral, truncate, rounded, cuneate or acute, the costa plane to prominulous above, often appressed villose proximally, appressed villose beneath, the principal secondary veins 6-7, arcuate, prominulous above, prom- inent beneath, subcoriaceous, usually concolorous, lightly appressed villose on costa and secondary veins, often sparsely pubescent on margins, the intervenal area glabrous; petioles to 1.5 cm long, stout, to 0.3 cm wide, often arcuate; stipules oblanceolate, 1.5-2.5 cm long, ferrugineous-sericeous outside, glabrous and glandular within. Inflorescences terminal, few-flowered cymes, the peduncles arising in a fan, each usually unbranched, slender, stiff, angular, puberulent. Flowers staminate, pistillate or bisexual (functionally so?), the staminate flowers slightly larger, sessile or on pedicels shorter than the hypanthium, the buds ru- gous, turgid below the middle, tapering to an obtuse apex; hypanthium com- pressed cylindrical ca. 1 mm long, the calycine cup to 5 mm long, to 2.5 mm wide, carnose, puberulent outside, glabrous to puberulent and eglandular within, truncate, the calycine teeth 5, subulate, to 1 mm long, obtuse; corolla white, the tube cylindrical, somewhat inflated, 5-7 mm long, 1.5 mm wide, carnose, densely white villose outside, glabrous within, the lobes 5, lanceolate, 5-7 mm long, glabrous within, minutely white-puberulent adaxially; stamens 5-6, the anthers linear oblong, 4-4.5 mm long, distinctly petaloid rostrate for 1 mm, the filaments very short, inserted near middle of tube; ovarian disc doughnut shaped, 1-2 mm long, 0.9-1.8 mm wide, 0.5 mm high, the style slender, 4-9 mm long, the stigmas 2, subulate, 0.3-0.6 mm long. Fruits compactly clustered, sessile, oblong rotund, to 1.5 cm long, pruniform, marcescent, sparsely sericeous, often the vestige of the calyx forming a conspicuous annular scar; seeds compressed, angulate, ca. 2 mm long, shiny red, the surface with a series of sinuous, densely packed some- what parallel ridges.
Distribution ranges from Mexico to northern South America. It also occurs in Cuba.
Note The flowers should be studied critically under field conditions. Plants have been described as dioecious, but some dissected flowers have func- tional anthers, a well-defined style and a pair of stigmas. The ovary is not apparent in these flowers. One collection, Croat 11532, has fruit more oblong in shape and does not have the appearance of a small dried prune so typical of A. corymbosa. The pericarp is smoother than the typical. Croat noted on the collection that the fruits were old, which may account for the difference in appearance.
Specimen CANAL ZONE: Fort Kobbe, near beach, Duke 4719, 4724 (both MO). Albrook, Dwyer & Robyns 43 (MO). Headquarters J.W.T.C., Johnston 1574 (MO). W of Gamboa, Nee 6772 (MO). BARRO COLORADO ISLAND: Croat 6072, 15164, 16214 (all MO); Foster 1337 (MO). CHIRIQUi: San Lorenzo, 5 m, Lao 598 (MO). COCLu: La Mesa, 900-930 m, Croat 37462 (MO). COLON: Salud, Lao & Holdridge 225 (MO). DARIEN: Pico Piriaque, Duke 8137 (MO). Pifias, Duke 10598 (MO). Baia de Pifias, Stern & Chambers 192 (MO). Mouth of Rio Lara, Tyson et al. 3864 (MO). Piriaque Camp at River, Tyson et al. 4741, 4746, 4754 (all MO). PANAMA: Taboga Island, Allen 134 (BM, MO). Cerro Azul to Cerro Jefe, Austin 24 (MO); Blum et al. 18 (MO); Croat 11532 (MO). Panama Viejo, Duke 5736 (MO). San Jose Island, Duke 12503 (MO). Cerro Azul to Cerro Jefe, Dwyer 1487, 1501, 1871, 2071, 2776 (all MO), 8041 (GH, MO); Dwyer & Gentry 10243 (MO); Guerra 5 (MO); Lewis et al. 268 (GH, K, MO, UC, US); Porter et al. 4079 (MO, SCZ, US); Reece 5 (MO). Villa Rosario, International Highway, Saldana 21 (MO). San Jose Island, Stimson 5328 (MO). Cerro Azul to Cerro Jefe, Tyson 2089 (MO); Tyson et al. 4061, 4314, 5381 (all MO). VERAGUAS: La Yeguada, 600 m, Correa 2217 (MO). Isla de Coiba, Dwyer 1629 (MO).
 
 
 
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