Monographs Details:
Authority:
Andersson, Lennart. 1998. A revision of the genus (Rubiaceae--Cinchoneae). Mem. New York Bot. Gard. 81: 1-75.
Andersson, Lennart. 1998. A revision of the genus
Family:
Vochysiaceae
Vochysiaceae
Description:
Species Description - Tree 15-35 m high, to 65 cm dbh; hairs where present yellowish brown; young twigs pubescent. Leaves opposite or in 4-merous whorls; blade coriaceous, narrowly oblong, elliptic or narrowly obovate, 8.5-15 X 2.5-5.5 cm, glabrous above, tomentose and glabrescent below; apex shortly acuminate; base obtuse; midvein sulcate above, prominent below; lateral veins 14-20 pairs, sulcate above, prominent below, angle with midvein 60-80°; tertiary veins percurrent, sinuous, oblique to midvein, arrangement predominantly alternate; marginal vein 1-3 mm from margin; petiole transversely rimose, 3-10 mm long; stipules absent. Inflorescences terminal. 10-18 cm long, peduncles and lateral branches pubescent: cincinni to 3 cm long, pubescent; outer bracts rounded or broadly ovate, 9-10 X 6-8 mm; inner bracts elliptic, 3 mm long; pedicel 1-3 mm long; buds 6- 8 mm long; spurred calyx-lobe 7-8 X 9-10 mm, spur cylindric. usually recurved, 3-5 mm long; other calyx-lobes 2-5 mm long; petal white or yellowish, ca. 15 X 15 mm, villose at base, glabrescent; stamen ca. 6 mm long; staminodes 1-2 mm long; style 5-6 mm long, glabrous. Fruits winged, minutely puberulous, glabrescent; major wing narrowly oblong. 5-5.5 X 1.3-1.8 cm; second major wing narrowly oblong or narrowly elliptic, 2-2.5 X 1.5-1.8 cm.
Species Description - Tree 15-35 m high, to 65 cm dbh; hairs where present yellowish brown; young twigs pubescent. Leaves opposite or in 4-merous whorls; blade coriaceous, narrowly oblong, elliptic or narrowly obovate, 8.5-15 X 2.5-5.5 cm, glabrous above, tomentose and glabrescent below; apex shortly acuminate; base obtuse; midvein sulcate above, prominent below; lateral veins 14-20 pairs, sulcate above, prominent below, angle with midvein 60-80°; tertiary veins percurrent, sinuous, oblique to midvein, arrangement predominantly alternate; marginal vein 1-3 mm from margin; petiole transversely rimose, 3-10 mm long; stipules absent. Inflorescences terminal. 10-18 cm long, peduncles and lateral branches pubescent: cincinni to 3 cm long, pubescent; outer bracts rounded or broadly ovate, 9-10 X 6-8 mm; inner bracts elliptic, 3 mm long; pedicel 1-3 mm long; buds 6- 8 mm long; spurred calyx-lobe 7-8 X 9-10 mm, spur cylindric. usually recurved, 3-5 mm long; other calyx-lobes 2-5 mm long; petal white or yellowish, ca. 15 X 15 mm, villose at base, glabrescent; stamen ca. 6 mm long; staminodes 1-2 mm long; style 5-6 mm long, glabrous. Fruits winged, minutely puberulous, glabrescent; major wing narrowly oblong. 5-5.5 X 1.3-1.8 cm; second major wing narrowly oblong or narrowly elliptic, 2-2.5 X 1.5-1.8 cm.
Discussion:
Machado River region, Dec 1931 (fr), Knikoff 1679 (F, K. MO, NY, US). Erisma floribundum is morphologically similar to E. bicolor in floral structure. Although having in common the largely bracteate flowers with recurved spurs, these two species are distinct in leaf characters. Erisma floribunduin also shows affinities with E. laurifolium both in leaf and floral morphology. The differences between the two species are discussed under E. laurifolium. Stafleu (1954) recognized two varieties of this species, floribundum and tomentosum, which he distinguished by the pubescence of the leaves and petal. However, pubescence ranges from densely tomentose to glabrous, thereby obscuring the delimitation of the two varieties.
Distribution:
Amazonas Brazil South America| French Guiana South America|
Amazonas Brazil South America| French Guiana South America|