48 Proceedings of the Biological Society of Washington. 



MARATTIACEAE. 



Danaea elliptica (L.) J. E. Sm. 



Near Laguna, Samand Peninsula (262). Old Heart River (Jato Viejo), 

 Samand Peninsula; altitude 300 meters (1407). 



SCHIZAEACEAE. 

 Anemia hirta (L.) Swartz. 



Cotuy, Provincia de la Vega; sea level to 300 meters altitude (821). 



Originally described from specimens collected in the Leogane region, 

 Haiti. It is known otherwise from Porto Rico and the Lesser Antilles, 

 and doubtfully from South America. 



Anemia abbottii Maxon, sp. nov. 



Rhizome short-creeping, densely covered with rigid blackish acicular 

 hairs; fronds completely dimorphous, dorsal, distichous, the fertile ones 

 greatly surpassing the sterile. Sterile fronds numerous, rigidly ascending 

 or recurved, 4 to 10 cm. long; stipes 2 to 4.5 cm. long, arcuate or subflexu- 

 ous, dark brown, thickly beset with spreading, curved or subflexuous, flat- 

 tish, septate, light brown hairs ; blades narrowly deltoid-oblong or lance-ob- 

 long, 2 to 6 cm. long, 1 to 2 cm. broad near the base, simply pinnate; pinnae 5 

 to 11 pairs below the larger, obtuse, somewhat lobate terminal segment, 

 spreading, approximate to strongly imbricate, mostly stalked (the lower 

 ones 2 to 7 mm.), orbicular or exactly oval from a cordate or subcordate 

 base, simple, not lobed, equilateral, rigidly coriaceous, strongly convex, 

 highly lustrous above and bearing a few long, curved, antrorse hairs in the 

 deep wrinkles between the veins, beneath copiously but minutely glandu- 

 lose; margins very greatly thickened beneath, cartilaginous, strongly 

 sinuate-dentate when viewed from the under side. Fertile fronds erect, 

 7 to 19 cm. long, the rather stout stipes dark brown nearly throughout; 

 sporophyll one-third the length of the stipe, narrow, the pinnae numerous, 

 mostly close, 2 to 5 mm. long, subsessile, pedately lobed, the lobes glandu- 

 lar-puberulent and sparsely hairy; spores about 0.062 mm. in diameter, 

 broadly and deeply striate, the ridges subflexuous and distantly thickened. 



Type in the U. S. National Herbarium, no. 1,048,802, collected on the 

 rocky limestone coast 3 to 4 miles west of San Lorenzo Bay, south side of 

 Samand Bay, Dominican Republic, at sea level (just above high water 

 mark), April 11, 1921, by Dr. W. L. Abbott (no. 1309). Duplicate material 

 has been distributed to the Gray Herbarium, the New York Botanical 

 Garden, the Berlin Museum, and the Herbarium of Prince Roland Bona- 

 parte. 



Anemia abbottii is of the group of A. aurita Swartz, a Jamaican species, 

 and is most closely allied to A . portoricensis Maxon, of Porto Rico. From 

 this it differs notably in its much lesser stature and its -simply pinnate 

 sterile fronds, and in having the leaf surfaces hairy above, rather than 

 beneath. Long hairs are wanting from the under surface, whereas they 

 are conspicuously present in A. portoricensis. The fertile fronds are much 

 simpler than in A. portoricensis, also. The relationship of A. abbottii 

 with A. nipeensis Benedict, of Cuba, is much more remote. 



