260 UnpDERWoOD: AMERICAN FERNS 
by Fée under Mertensia and transferred by Moore to Gleichenia ; 
although the plant has thus been known for nearly fifty years it 
has remained undescribed. The plant was distributed by Mr. 
Pringle as ‘‘a smooth form” of Gleichenia pubescens, but has 
nothing to do with the species distributed by him under that name 
in the collection of the same year (zo. 6730). The Jamaica plants 
which we are unable to distinguish from the Mexican occur at 
points above Morce’s Gap on the trail to. John Crow Peak and 
above Cinchona on the road to New Haven Gap. Jamaica collec- 
tions in the herbarium of the New York Botanical Garden are as 
follows: Clute 184, Underwood 618, 965, 1245, 2033, 2097, and 
31738. Mr. Jenman confused this species with G/eichenia furcata, 
to which species, as properly understood, it is not closely related. 
15. Dicranopteris pectinata (Willd.). 
Mertensia pectinata Willd. Vet. Ak. Nya Handl. 168. pl. 4. 
1804. 
Gleichenia pectinata Pres), Rel. Haenk. 1:71. 1825. 
TYPE LOCALITY: Caracas, Venezuela. 
Disrripution: Generally distributed through tropical Amef- 
ica. Specimens are at hand from Jamaica, Hispaniola, Porto 
Rico, Dominica, St. Vincent, Martinique, Guadeloupe, Grenada, 
Trinidad, Guatemala, and Panama; also from Colombia, Guiana, 
Ecuador, Bolivia, and Brazil. 
16. Dicranopteris pteridella ( Christ ). 
Gleichenia pteridella Christ, Bull. Herb. Boiss. 11.6: 284. 1906. 
TYPE Locatity: Costa Rica, Wercklé. 
DisTRIBUTION: Known only from its type collection. 
17. Dicranopteris retroflexa (Bommer). 
Gleichenia retrofexa Bommer, Bull. Soc. Bot. Belg. 35: 175: 
1896. 
Gleichenia intermedia flexuosa Baker, Jour. Bot. 25:24. 1887. 
(Type from Costa Rica, 7. /. Cooper). 
Type Locatity: La Palma, Costa Rica, Pittier I4 of. 
DisTRIBUTION: Known only from the mountains of Costa 
Rica, alt. 1800 m. 
ILLusTRATIONS: Christ, Bull. Herb. Boiss. II. S:15. 100% 
This remarkable species was first described by Mr. Baker, im 
