16 
SYNOPSIS. 
capsules sessile in the axils of the leaves. Plants resembling 
mosses. 
Genus Lycopodium, Linneus. The characters those of the 
family. 
1 . Ly. clavatum, fig. p. 353. Linneus^ Sp. PI. 1564, and Brit. aut. 
2. Ly. annotinum, fig. p. 361. Linneus, Sp. PI. 1566, and 
Brit. aut. 
3. Ly. alpinum, fig. p. 365. Linneus, Sp. PI. 1567, and Brit. aut. 
4. Ly. inundatum, fig. p. 369, Linneus, Sp. PI. 1565, and 
Brit. aut. 
5. Ly. selaginoides, fig. p. 371. Linneus, Sp. PI. 1565, and 
Brit. aut. 
6. Ly. Selago, fig. p. 375. Linneus, Sp. PI. 1565, and Brit. aut. 
Family. — Isoete^. Quillworts. 
Fronds hollow, longitudinally quadripartite, sessile on a tu- 
berous rhizoma : capsules large, seated within the substance 
of the leaf at its base. Subaquatic plants. 
Genus Isoetes, Linneus, The characters of which are those 
of the family. 
1. Is. lacustris, fig. p. 381. Z^/^/^c^^5,Sp.Pl. 1563, and Brit. aut. 
Order V.—MARSILEACE^. 
Aquatic plants with circinate vernation and having stalked 
capsules attached to a creeping rhizoma. 
Genus Pilularia, Linneus, Fronds threadlike, capsules dense- 
ly clothed with a hairy investment. 
1. Pi. globulifera, fig. p. 393. Linneus, Sp. PI. 1563, and 
Brit. aut. 
By the reference ‘British authors ’ or ‘ Brit, aut.’ I allude to the 
latest edition of each of the undermentioned works. 
The English Flora. By Sir J. E. Smith. 2nd ed. dated 1830. 
The British Flora. By Sir W. J. Hooker. 5th ed. dated 1842. 
Manual of British Botany, By C. C. Babington. 1st ed. 
dated 1843. 
