SYNOPSIS. 
11 
** Pinnce divided. 
4. As. Adiantum-nigrum, fig. p. 255, var. acutum, p. 257, var. 
obtusum, p. 257. Linneus^ Sp. PI. 1541, and Brit. aut. 
5. As. lanceolatum, fig. p. 249. Hudson, Flor. Ang. ii. 454, 
2nd edit, date 1778, and Brit. aut. 
Genus Athyriuin, Roth. Ultimate divisions generally distinct 
and leaf-like, each with a distinct midvein : lateral veins always 
branched : involucre crescent-shaped, its free margin split into 
capillary segments. 
1. At. Filix-femina, fig. p. 238. Polypodium F.-f. Linneus, 
Sp. PI. 1551. Aspidium F.-f. Sm. Eng. FI. iv. 282. As- 
plenium F.-f. Hook. Br. FI. 443. Athyrium F.-f. Bab. 
Man. 388. 
f2. At. convexum, fig. p. 245. Athyrium F.-f. var. convexum, 
Bab. Man. 388. 
f3. At. molle, fig. p. 245. Polypodium m. Schreher, Spic. 
Flor. Lips p. 70, date 1771. 
Family. — Polypode^. Polypodies. 
A large and varied group. The capsules are seated in circu- 
lar clusters directly on the hack of the lateral veins. 
Genus Polystichum, Roth. Involucre circular attached by its 
centre. This genus includes all the species I have placed in 
Lastrcea : it was first restricted by Schott to the congeners of 
Roth’s typical species Lonchitis. 
fl. Po. angulare, fig. p. 173. Aspidium a. Willdenow, Sp. PI. 
V. 257, date 1810. Sm. Eng. Fl. iv. 278. Hook. Br. Fl. 
438. Polystichum aculeatum var. Bab. Man. 386. 
2. Po. aculeatum, fig. p. 169. Polypodium a. Linneus, Sp. PI. 
1552. Aspidium lobatum, Sm. Eng. Fl. iv. 277. Hook. 
Br. Fl. 438. Polystichum aculeatum, Bab. Man. 386. 
3. Po. Lonchitis, fig. p. 163. Polypodium L. Linneus, Sp. PI. 
1548. Aspidium L. Sm. Eng. Fl. iv. 271. Hook. Br. Fl. 
438. Polystichum L. Bab. Man. 387. 
Genus Lastraea, Bory. Involucre irregularly reniform some- 
times wanting, attached at the marginal notch. 
