CTERS OF TRIBES AND GENERA. 
three following genera, They are all natives of the Ol 
= World, not being represented in America. 
2.—Homara, Cav. (1801.) 
Davallia in part; Smith and other authors. 
Sureulum slender. Fronds linear, lanceolate, entire 
sinuose, pinnatifid, or deltoid bipinnatifid, rigid, glossy, 
rarely squamose, 4 to 12 inches in height. Veins simple or 
forked, free, often thickened upwards. Sori marginal or 
antimarginal. Receptacles punetiform.  Indusium sub- 
rotund, or reniform, entirely attached by its generally 
broad base, shorter or equal with the margin, forming 
bilabiate firm cyst. 
Type. Davallia pedata, Smith, 
Illust.—Hook and Bauer, Gen. Fil. t.114 A ; Moore, Ind. 
Fil, p. 74; J. Sm, Ferns Brit. and For., fig. 2 
. . Hook. Syn. Fil., t. 2, fig. 18, a. b. c. de 
. Oz& —This genus consists of about a dozen species, 
natives of the Malayan, Philippine, and Asian Islands of 
the Pacific Ocean. It is distinguished from true Davalli 
_ by the indusium being attached by its interior base only. 
. Ex.—H. angustata, Wall. ; H. heterophylla, Sm. (v v.} 
. H. pectinata, Sm.; H. parallela, Wall. ; H. pedata, Sin. 
(vv); H. sessilifolia, Bl.; H. Cumingii, Hook. (v v.); 
H. vestita, Bl. ; H. Tyermani, Moore (App. Hook. Syn. Fil.) 
3.—DAYALLA, Sm. in part (1798). — 
Davallia in part, Hook, Sp. Fil. 
| Sureulun creeping, or sub-erect and sub-fru 
Fronds pinnate, bipinnate or deltoid multifid, ` 
