55 107 



rather distant, short-stalked, fully pinnate in the lower half; segments or pinnules 

 oblique, deeply lobed with 2—3 oblique, obtuse lobes on each side, those of the 

 anterior side the largest, the anterior side generally entire in the lower half and 

 decurrent at base. Veins 2—4 to a side, simple, one to each lobe and not reaching 

 the margin, each bearing a sorus, which is placed at the base of each lobe. Indu- 

 sium very large, glabrous, brown, persistent. — Surfaces (eostæ above excepted) 

 glabrous, but costæ and often also costulæ beneath furnished with rather nume- 

 rous bullate scales, which resemble those of the two preceding species but are 

 larger and more numerous. Scales of stipe and rachis rather many, from a broad, 

 subbullate base ovate-acuminate, brown, glossy, 



var. tricholepis (Bak.) — Fig. 10 d. 



Syn. Nephrodhim tricholepis Bak. in Hemsley, Biol. Centr. Amer. 3: 651. 1885. 

 Dryopteris tricholepis C. Chr. Ind. 298. 1905. 



A smaller plant than the type, otherwise scarcely different. Lamina 10- 15 cm 

 long, 3 — 5 cm Ijroad at base where generally broadest (type 25 X 10 cm, somewhat 

 narrowed below). Pinnæ pinnale; pinnules mostly fully entire, ligulate, or the 

 larger ones with one or two obtuse lobes. Scales typical in shape; in several 

 specimens they are of a peculiar, metallic lustre, not unlike the scales of Poly- 

 podium moniliforme. Sori often one or two only to each segment or pinnule. 



Guatemala: Mts. of Verapaz, Salvin (Kew!, type-specimen); Pansaraalâ, Alta Verapaz, 3800 ft., 

 DoNN. Smith nr. 1563 (W) and v. Türckheim ed. Donn. Smith nr. 62t> (B, C, W); near the 

 Finca Scpacuite, Senaju, Cook and Griggs nr. 482 (W). 



I have not seen Tonduz nr. 13764 from Costa Rica, Nicoya, by Christ re- 

 ferred to Aspidium tricholepis (Bak.) (Bull. L'Herb. Boiss. II. 5: 259). 



var. deltoideo-lanceolata n. var. 

 Lamina decidedly deltoid in outline, 20 cm long, 8 cm broad at base. Basal 

 pinnæ the largest with the lower side enlarged with pinnules I'/a cm long, 6 mm 

 broad and nearly incised to the midrib into oblique, ligulate tertiary segments. 

 Segments or pinnules of upper pinnae mostly entire, the upper basal one large 

 and broad. 



A characteristic form, in most characters agreeing with var. tricholepis but 

 tending to a tripinnate state and approaching the following species, which however 

 is very different in venation and scales. 

 Guatemala: Alta Verapaz, Coban, H. v. Türckheim nr. II. 1621 (W). 



47. Dryopteris Hemsleyana (Bak.) C. Chr. Ind. 270. 1905. 



Syn. Polypodium Hemsleycinum Bak.; Hemsley, Biol. Centr. Amer, -i: 660 tab. 



108. 1885. 

 Type from Guatemala: Chilasco, Godman and Salvin (Kew!j. 



