SYNOPSIS. 
7 
4. Eq. palustre, fig. p. 43, var. polystachion, p. 47, var. nu- 
dum, p. 49. Linneus, Sp. PI. 1516, and Brit. aut. 
5. Eq. fluviatile, fig.p.51. Sp.Pl. 1517. Eq.limosum, 
Sm. Eng. El. iv. 326. Hook. Br. FI. 450. Bab. Man. 380. 
f6. Eq. limosum, fig. p. 58, in vignette (as var. of Eq. fluviatile). 
Linneus, Sp. PI. 1517. — Since writing my observations 
on this supposed species, I have been induced to modify 
my opinion as to the certainty of its being a variety of the 
preceding : it appears to grow at a greater elevation, to 
prefer boggy or muddy localities to actual w^ater, and ne- 
ver, under any circumstances, to become branched. I am 
indebted to Dr. Taylor for specimens from the neighbour- 
hood of Dunkerron, where it grows in such profusion as to 
be cut and dried for fodder. Dr. Balfour has found it in 
Scotland. I place it doubtingly as a species. 
7. Eq. sylvaticum, fig. fert. p. 59, barr. p. 62. Linneus^ Sp. 
PI. 1516. 
8. Eq. umbrosum, fig. fert. and barr. 63, barr. 82, right hand. 
Willdenow^ Sp. PI. v. 3, date 1810. Eq. Drummondii, 
Hook. Br. FI. 450. Bab. Man. 380. 
9. Eq. Telmateia, fig. fert. p. 67, barr. p. 76. Ehrhart, Bei- 
trage, ii. 159, date 1788. Eq. fluviatile, Sm. Eng. FI. iv. 
324. Hook. Br. FI. 450. Bab. Man. 379. 
10. Eq. arveiise, fig. fert. and barr. p. 77, barr. p. 82, left 
hand. Linneus^ Sp. PI. 1516, and Brit. aut. 
Ordek II. — FILICACEiE. 
Plants composed of fibrous roots, simple solid rhizoma, and 
flat leafy fronds which rise with a circinate vernation and bear 
capsules in clusters on their back or edges. The capsules are 
provided with an elastic jointed ring. The divisions of this 
order are still obscure, and require further investigation • the 
subjoined arrangement results from the combined employment 
of the characters used by Ray, Linneus, Presl and John Smith. 
Family. — Adiante^. 
The ultimate divisions of the frond generally stipitate and 
