10 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 65 



of evenly covered with stiffish, persistent, piliform, spreading scales. 

 In general form it suggests somewhat a greatly reduced miniature 

 of the plant here described *as N. Brackenridgei, but it has no very 

 near alliance with that species, being widely different in minute 

 characters as well as in size and gross structure. 



NEPHROLEPIS EXALTATA (Swartz) Schott 



Peru : Cultivated at Miraflores ; said to have come from eastern 

 Peru (18670). 



One of the forms included in this species as currently understood. 



PELLAEA TERNIFOLIA (Cav.) Link 



Peru : Vicinity of Oroya, alt. 3,700 meters (18703). 



TRISMERIA TRIFOLIATA (L.) Diels 

 Peru : Near Santa Clara, alt. 400 meters (18736). 



ASPLENIUM FRAGILE Presl 



Peru: Vicinity of Oroya, alt. 3,700 meters (18702). 

 Bolivia: Vicinity of Comanche, alt. 3,800 meters (18878). 



ASPLENIUM IMBRICATUM Hook. & Grev. 



Peru : Vicinity of Oroya, alt. 3,700 meters ( 18706) . 



DRYOPTERIS ROSEI Maxon, sp. nov. 



Rhizome erect or ascending, | ligneous, closely paleaceous at the 

 included apex, the scales large, flattish, yellowish brown, ovate or 

 deltoid-ovate, acuminate, entire, glabrous. Fronds ascending, few, 

 about 65 cm. long, narrow, arranged in a peripheral crown; stipes 

 about 10 cm. long, angulate in drying, dull* olivaceous, minutely 

 puberulous with short, simple, mainly retrorse hairs ; lamina linear- 

 oblanceolate, about 55 cm. long, 10 to 12 cm. broad above the middle, 

 long-acuminate at the apex, very gradually long-attenuate in the 

 basal part, bipinnatifid, the pale brownish to olivaceous rachis slen- 

 der ( 1 to 2 mm. in diameter) , minutely puberulous like the stipe ; 

 pinnae about 35 pairs, subopposite, the lowermost 12 or 13 pairs 

 gradually shorter, the basal 3 or 4 pairs 2 to 3 cm. apart, vestigial, 

 1 to 3 mm. long ; larger pinna? (medial and supramedial) 1.5 to 2 cm. 

 apart, symmetrical, narrowly linear-oblong, 5 to 6 cm. long, 9 to 12 

 mm. broad, sessile, slightly falcate toward the acuminate apex, 



