Monographs Details:
Authority:
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
Family:
Pteridaceae
Pteridaceae
Description:
Species Description - Rhizomes compact, ascending; rhizome scales 2-3 x 0.3 mm, bicolorous, each with a narrow, thickened black central streak and light brown margins; fronds to 45 cm tall, clumped; stipes 1/2-3/4 of the frond length, atropurpureous to black, lustrous, glabrous, terete (to shallowly grooved distally); blades bipinnate, the 5 -9 pinnae radiating from the tips of stipes; costae grooved with narrow brown wings, segments dimidiate, auriculate; adaxial surfaces glabrous; abaxial surfaces with sparse, clavate, white hairs less than 0.1 mm long; veins obscure; sori marginal, short, 6-10 on both long edges of segments and even 1-3 on narrow inner edge; indusia pale, thin, 0.5-0.8 x 0.3-0.5 mm; spores orange-tan; 2n=60 (Trin.)
Species Description - Rhizomes compact, ascending; rhizome scales 2-3 x 0.3 mm, bicolorous, each with a narrow, thickened black central streak and light brown margins; fronds to 45 cm tall, clumped; stipes 1/2-3/4 of the frond length, atropurpureous to black, lustrous, glabrous, terete (to shallowly grooved distally); blades bipinnate, the 5 -9 pinnae radiating from the tips of stipes; costae grooved with narrow brown wings, segments dimidiate, auriculate; adaxial surfaces glabrous; abaxial surfaces with sparse, clavate, white hairs less than 0.1 mm long; veins obscure; sori marginal, short, 6-10 on both long edges of segments and even 1-3 on narrow inner edge; indusia pale, thin, 0.5-0.8 x 0.3-0.5 mm; spores orange-tan; 2n=60 (Trin.)
Discussion:
Adiantum radiatum L., Sp. Pl. 2: 1094. 1753. Cheilanthes radiata (L.) J. Sm., J. Bot. (Hooker) 4: 159. 1841. Hypolepis radiata (L.) Hook., Sp. Fil. 2: 72. 1852. Lectotype (chosen by Lellinger, Mem. New York Bot. Gard. 23: 3. 1972). Jamaica(?). Sloane “Adiant. 3 radiatum” (BM). LINN 1252.1 was not in LINN until after 1755 (Jackson, 1912). The distinctive frond architecture sets A. radiata apart from the other Adiantopsis species, which more closely resemble species of Cheilanthes.
Adiantum radiatum L., Sp. Pl. 2: 1094. 1753. Cheilanthes radiata (L.) J. Sm., J. Bot. (Hooker) 4: 159. 1841. Hypolepis radiata (L.) Hook., Sp. Fil. 2: 72. 1852. Lectotype (chosen by Lellinger, Mem. New York Bot. Gard. 23: 3. 1972). Jamaica(?). Sloane “Adiant. 3 radiatum” (BM). LINN 1252.1 was not in LINN until after 1755 (Jackson, 1912). The distinctive frond architecture sets A. radiata apart from the other Adiantopsis species, which more closely resemble species of Cheilanthes.
Distribution:
Mexico North America| Guatemala Central America| Belize Central America| Honduras Central America| Nicaragua Central America| Costa Rica South America| Panama Central America| West Indies| Colombia South America| Venezuela South America| Trinidad and Tobago South America| Guyana South America| Suriname South America| French Guiana South America| Ecuador South America| Peru South America| Brazil South America| Bolivia South America| Paraguay South America| Argentina South America|
Mexico North America| Guatemala Central America| Belize Central America| Honduras Central America| Nicaragua Central America| Costa Rica South America| Panama Central America| West Indies| Colombia South America| Venezuela South America| Trinidad and Tobago South America| Guyana South America| Suriname South America| French Guiana South America| Ecuador South America| Peru South America| Brazil South America| Bolivia South America| Paraguay South America| Argentina South America|