SYNOPSIS, 
13 
9. La. Phegopteris, fig. p. 115 (as Polypodiimi Phegopteris). 
Polypodium P. Limieus, Sp. PL 1550, and Brit. aut. 
10. La. robertiana, fig. p. 131 (as Polypodium calcareum). 
Polypodium r. Hoffmann, Deutsch. Flora, ii. addendum to 
p. 10, date 1795. “23. Polypodium rohertianum fronde 
triangulari, foliolis ternis bipinnatis : pinnis pinnulisque 
inferne pinnatifidis. In montosis rupestribus. Jun. 
(Gott. — Polypod. Dryopt. simile. Stipes glaucus uno 
latere sulcatus. Frons tenera. Uterque nudo oculo sub- 
tili tomento, ad lentem brevissimis glandulis obsitus. Odor 
debilis Geran. robert. Fructif. minuta).” HofF. 1. c. This 
description is so admirably applicable to the present spe- 
cies, that one is at a loss to conceive how it can have been 
overlooked. Polypodium calcareum, Sm. Flora Britan- 
nica, 1117, and Brit. aut. 
11. La. Dryopteris, fig. p. 123 (as Polypodium Dryopteris). 
Polypodium D. Linneus, Sp. PI. 1555, and Brit. aut. 
Genus Cystopteris, Bernhardi. Midvein of ultimate divisions 
distinct, lateral veins branched free : involucre attached half 
way between midvein and extremity, projecting forwards and 
covering the circular mass of young capsules like a hood, its an- 
terior margin split into unequal and often capillary segments. 
1. Cy. montana, fig. p. 159. Polypodium m. Allioni, Pede- 
mont. n. 2410, date 1785. 
2. Cy. fragilis, fig. pp. 149, 154, 155, 156, 157. Polypodium 
f. Linneus, Sp. PI. 1553. Cystea fragilis, dentata, angus- 
tata and regia, Sm. Eng. FI. iv. 285. Cistopteris fragilis, 
dentata and alpina. Hook. Br. FI. 441. Cystopteris fra- 
gilis, Bab. Man. 387. 
Genus Woodsia, R. Brown. Midvein of ultimate divisions 
indistinct, lateral veins branched free : involucre seated near the 
extremity of each branch, its base enclosing the base of cap- 
sules its margin split into jointed capillary segments which min- 
gle with the capsules. 
1. Wo. llvensis, fig. p. 137, supposed to be the Acrostichum 
Ilvense of Linneus, Sp. PI. 1528. Woodsia llvensis of 
Brit. aut. 
2. Wo. alpina, fig. p. 143. Acrostichum a. Bolton, Filices, 
