184 Slosson: New ferns from tropical America 



the smaller subclimidiate, serrate and decurrent; texture thin, 

 membrano-herbaceous; pubescence white or whitish, setaceous, 

 multicellular, the facial grooves of the stipes and the backs of the 

 costae thickly coated with short fine soft hairs which spread part 

 way up the midribs of the pinnules, larger coarser stiffer hairs scat- 

 tered over the stipes, costae, backs of the veins on the under surface 

 of the lamina, and between the veins on its upper surface; veins 

 clearly visible, pinnate; sori apical on the veinlets, midway between 

 the midvein and the margin of the lamina, sterile veinlets mostly 

 extending almost to the margin; indusia glandular, not setose; 

 sporangia glabrous ; spores coarsely papillose. [Plate 3, figure i .] 



Type in the Underwood Herbarium at the New York Botanical 



Garden, collected in Jamaica " 1874-79." 



The following specimens also are in the Underwood Herbarium : 

 Jamaica: Mt. Diabolo, altitude 609 meters, April 2, 1903, 



Underwood 1825; vicinity of Hollymount, Mt. Diabolo, May 9, 



1903, Maxon 1957; vicinity of Hollymount, altitude about 750 



meters, May 25-27, 1904, Maxon .2311, 2260. 



Dryopteris leucochaete Slosson sp. now . . . 



Rhizome creeping, slightly chaffy; fronds clustered, pubescent 

 and glandular; stipes up to -35.5 cm. long, brown and slightly 

 chaffy at base, above greenish to brownish, grooved on face; 

 scales soft, pale brown, lanceolate, acuminate, up to 3' mm. long, 

 with slightly ciliate or subglandular margins; laminae up 'to 28 

 cm. long and 25 cm. broad, mostly subpentagonal, commonly 

 quadrij: innate, abruptly narrowed above, apices mostly long- 

 acuminate and serrate; pinnae oblique, stalked; asymmetrical, 

 basal pair ovate-deltoid to deltoid'; pinnules oblique, stalked to 

 decurrent, several of the inferior elongate in' the basal pinnae and 

 shortened in the upper; segments oblique, stalked to decurrent, 

 unequally ovate to subtrapezioid, cut away at base, pinnate or 

 obliquely pinnatifid to serrate; glands capitate, often jointed, 

 sometimes forked; pubescence white, setaceous, multicellular, fine 

 and short hairs abundant on the groove of the stipe, backs of the 

 costae, and partly on the midribs of the pinnules, larger, coarser, 

 scattered hairs on the general surface of the stipes, costae, and 

 backs of the veins, and between the veins on the upper surface 

 of the lamina; veins pinnate; sori apical on the veinlets, midway 

 between the midvein and margin of the lamina; indusia conspicu- 

 ously setose and glandular; sporangia glabrous; spores papillose. 

 [Plate 3, figure 2.] 



