Monographs Details:
Authority:
Maguire, Bassett & Wurdack, John J. 1958. The botany of the Guayana Highland--Part III. Mem. New York Bot. Gard. 10: 1-156.
Maguire, Bassett & Wurdack, John J. 1958. The botany of the Guayana Highland--Part III. Mem. New York Bot. Gard. 10: 1-156.
Family:
Myrtaceae
Myrtaceae
Description:
Latin Diagnosis - Arbor 8-12 m alta, ramulis paniculis alabastrisque pilis flavidis, usque ad 1.5 mm longis, dense obsitis; ramulis exalatis; foliis acuminatis 12-18 cm longis, supra crebro impresso-punctatis; nervo medio supra impresso; venis lateralibus non impressis; petiolis 9-15 mm longis; paniculis 6-14 cm longis multifloris; bracteis deciduis; alabastris clausis, calyptratis.
Species Description - Tree 8-12 m high, up to 10 cm diameter, the inflorescence and young growth covered with loosely appressed sessile dibrachiate silky brownish yellow hairs up to 1.5 mm long; leaves elliptic to lance-ovate, (2.5-) 5-6.5 cm wide, (7-) 12-18 cm long, 2.6-3 times as long as wide, acuminate, rounded from below the middle to an acute base, the margins decurrent on the ventrally concave petiole 1.5-2 mm thick, (6-) 9-15 mm long; midvein deeply sulcate above, prominent beneath; lateral veins 15-20 pairs, slightly elevated both sides, not well contrasted to the numerous intermediates; marginal vein equaling the laterals, scarcely arched between them, 1.5-2 mm from the margin, sometimes with an outer smaller vein beyond it; blades dull green and thickly impressed-punctieulate above (the glands more than 50 per mm2), paler and very sparingly dotted beneath, the lower surface somewhat persistently appressed pubescent; inflorescence usually abortive at the first node, the paired panicles 6-14 cm long, 3- (to 4-) times compound, many-flowered, the flowers mostly sessile in 3 's near the tips; peduncle nearly terete, 1.5-2 mm thick, 3-6 em long; basal bracts (one subtending each paired panicle) somewhat persistent, boat-shaped, keeled, acuminate, very sparsely pubescent or glabrous, 0.8-2 cm wide, 1.5-2.7 cm long; smaller bracts, and the bracteoles, deciduous before anthesis; buds 3-4 mm long, narrowly obovoid, rounded at the tip or obscurely apiculate; hypanthium after anthesis campanulate, 2.5 mm long, glabrous within; calyptra 2 mm in diameter; style 6 mm long, glabrous; stamens about 50, 5.5-7 mm long, the anthers 0.3-0.4 mm long; petals none; ovary bilocular; the ovules ascending, 2 in each locule; fruit not seen mature, probably globose, about 1 cm in diameter.
Latin Diagnosis - Arbor 8-12 m alta, ramulis paniculis alabastrisque pilis flavidis, usque ad 1.5 mm longis, dense obsitis; ramulis exalatis; foliis acuminatis 12-18 cm longis, supra crebro impresso-punctatis; nervo medio supra impresso; venis lateralibus non impressis; petiolis 9-15 mm longis; paniculis 6-14 cm longis multifloris; bracteis deciduis; alabastris clausis, calyptratis.
Species Description - Tree 8-12 m high, up to 10 cm diameter, the inflorescence and young growth covered with loosely appressed sessile dibrachiate silky brownish yellow hairs up to 1.5 mm long; leaves elliptic to lance-ovate, (2.5-) 5-6.5 cm wide, (7-) 12-18 cm long, 2.6-3 times as long as wide, acuminate, rounded from below the middle to an acute base, the margins decurrent on the ventrally concave petiole 1.5-2 mm thick, (6-) 9-15 mm long; midvein deeply sulcate above, prominent beneath; lateral veins 15-20 pairs, slightly elevated both sides, not well contrasted to the numerous intermediates; marginal vein equaling the laterals, scarcely arched between them, 1.5-2 mm from the margin, sometimes with an outer smaller vein beyond it; blades dull green and thickly impressed-punctieulate above (the glands more than 50 per mm2), paler and very sparingly dotted beneath, the lower surface somewhat persistently appressed pubescent; inflorescence usually abortive at the first node, the paired panicles 6-14 cm long, 3- (to 4-) times compound, many-flowered, the flowers mostly sessile in 3 's near the tips; peduncle nearly terete, 1.5-2 mm thick, 3-6 em long; basal bracts (one subtending each paired panicle) somewhat persistent, boat-shaped, keeled, acuminate, very sparsely pubescent or glabrous, 0.8-2 cm wide, 1.5-2.7 cm long; smaller bracts, and the bracteoles, deciduous before anthesis; buds 3-4 mm long, narrowly obovoid, rounded at the tip or obscurely apiculate; hypanthium after anthesis campanulate, 2.5 mm long, glabrous within; calyptra 2 mm in diameter; style 6 mm long, glabrous; stamens about 50, 5.5-7 mm long, the anthers 0.3-0.4 mm long; petals none; ovary bilocular; the ovules ascending, 2 in each locule; fruit not seen mature, probably globose, about 1 cm in diameter.
Discussion:
This species is named for Dr. G. J. H. Amshoff, author of the treatment of Myrtaceae in the Flora of Suriname, and of numerous other papers on the Myrtaceae of the Guianas. Miss Amshoff recognized the present species in the Flora of Suriname 3: 64 (1951), under the name of "Calyptranthcs spec", but did not provide a specific epithet. All the known collections are from the same funeral locality.
Distribution:
Suriname South America|
Suriname South America|