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 (coste above excepted) 
glabrous, but coste and often also costulz 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. 10d. 
Syn. Nephrodium 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 broad at base where generally broadest (type 25 >< 10 cm, somewhat 
narrowed below). Pinnz pinnate; 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, SarviN (Kew!, type-specimen); Pansamala, Alta Verapaz, 3800 ft., 
Donn. SurrH nr. 1563 (W) and v. TéóncknkgrM ed. Donn. SmitH nr. 626 (B, C, W); near the 
Finca Sepacuite, Senaju, Cook and GniGcs nr. 482 (W). 
I have not seen Tonpuz nr. 13764 from Costa Rica, Nicoya, by CHnrsT 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 em broad at base. Basal 
pinnz the largest with the lower side enlarged with pinnules 1'/» cm long, 6 mm 
broad and nearly incised to the midrib into oblique, ligulate tertiary segments. 
Segments or pinnules of upper pinnz mostly entire, the upper basal one large 
and broad. 
A characteristic form, in most characters agreeing with var. tricholepis but 
lending to a tripinnate state and approaching the following species, which however 
is very different in venation and scales. 
Guatemala: Alta Verapaz, Coban, H. v. TünckHEIM nr. II. 1621 (W). 
47. Dryopteris Hemsleyana (Bak.) C. Chr. Ind. 270. 1905. 
Syn. Polypodium Hemsleyanum Bak.; Hemsley, Biol. Centr. Amer. 3: 660 tab. 
108. 1885. 
Type from Guatemala: Chilasco, GopMan and Savin (Kew!). 
