Monographs Details:
Authority:
Acevedo-RodrÃguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.
Acevedo-RodrÃguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.
Family:
Cyatheaceae
Cyatheaceae
Description:
Species Description - Palmlike fern to 12 m tall. Trunk 10-15 cm diam., with persistent oval frond scars, usually without spines, densely clothed toward apex with whitish or creamy, papery scales to 4 cm long. Fronds monomorphic; stipes 25-60 cm long, yellowish, minutely scurfy when young, usually more or less roughened-tuberculate with minute blunt projections but not armed with spines, densely clothed toward base with deciduous, whitish or creamy (rarely brownish or bicolorous), lanceolate to narrowly ovate-attenuate scales. Blades ovate, 2-3.5 m long, 2-pinnate-pinnatifid, acuminate at apex, slightly reduced at base, essentially glabrous, the tissue light green and of rather heavy texture; rachis slightly muriculate, glabrescent; pinnae alternate, 40-80 x 15-35 cm, stalked; pinnules lance-oblong to elliptic-lanceolate, mostly 1.5-2 cm broad, attenuate at apex, all but the lowest sessile; segments usually 25-32 pairs, narrowly oblong to nearly falcate, 2-5 mm broad, dilated at base, the margin serrate; midveins with 1 or 2 deciduous, white, bullate scales at base on lower side; veins 10-14 pairs, 1- to 3-forked. Sori usually 6-11 pairs per fertile segment, inframedial, their position marked by pits on adaxial surface; indusium saucer-shaped, firm, persistent; receptacles wedge-shaped to capitate; paraphyses a mixture of acicular hairs and shorter, capitate-glandular ones.
Species Description - Palmlike fern to 12 m tall. Trunk 10-15 cm diam., with persistent oval frond scars, usually without spines, densely clothed toward apex with whitish or creamy, papery scales to 4 cm long. Fronds monomorphic; stipes 25-60 cm long, yellowish, minutely scurfy when young, usually more or less roughened-tuberculate with minute blunt projections but not armed with spines, densely clothed toward base with deciduous, whitish or creamy (rarely brownish or bicolorous), lanceolate to narrowly ovate-attenuate scales. Blades ovate, 2-3.5 m long, 2-pinnate-pinnatifid, acuminate at apex, slightly reduced at base, essentially glabrous, the tissue light green and of rather heavy texture; rachis slightly muriculate, glabrescent; pinnae alternate, 40-80 x 15-35 cm, stalked; pinnules lance-oblong to elliptic-lanceolate, mostly 1.5-2 cm broad, attenuate at apex, all but the lowest sessile; segments usually 25-32 pairs, narrowly oblong to nearly falcate, 2-5 mm broad, dilated at base, the margin serrate; midveins with 1 or 2 deciduous, white, bullate scales at base on lower side; veins 10-14 pairs, 1- to 3-forked. Sori usually 6-11 pairs per fertile segment, inframedial, their position marked by pits on adaxial surface; indusium saucer-shaped, firm, persistent; receptacles wedge-shaped to capitate; paraphyses a mixture of acicular hairs and shorter, capitate-glandular ones.
Distribution:
Saint Thomas Virgin Islands of the United States South America| Tortola Virgin Islands South America| Colombia South America|
Saint Thomas Virgin Islands of the United States South America| Tortola Virgin Islands South America| Colombia South America|