280 
FERNS : BRITISH AND FOREIGN. 
27. S. filicina, Spring. Monogr. 2, p. 189. S. dichrous, Sort. 
— Columbia and Peru. 
28. S. Africans, A. Braun. Revise, No. 23. S. V ogelii, Spring. 
— Fernando Po. 
29. S. pubescens, Spring. Monogr. 2, p. 173. Lycopodium 
pubescens. Wall. S. Willdenovii, Hort. — East Indies. 
30. S. Lyalin, Spring. Monogr. 2, p. 168. Lycopodium 
Lyallii, Hook. et Grev. — Madagascar. 
31. S. Lobbii, IT art. ; A. Braun. Revise, App. No. 26 ; Veitcli . 
Cat. (1861). — Borneo. 
32. S. Waliiehii, Hort.; Veitcli. Cat. (1861). — Penang. 
§ 3. Plants rosulate. 
33. S. cuspidata, Link ; Spring. Monogr. 2, p. 66. S. pal- 
lescens, Klot. S. circinalis, Hod. — Tropical America. 
34. S. convoluta, Spring. Monogr. 2, p. 69. Lycopodium 
convolutum. Walk, and Arnott. Lycopodium para- 
doxa, Hort. — Tropical America. 
35. S. involvens, Spring. Monogr. 2, p. 63. Lycopodium 
involvens, Sw. — India. 
36. S. lepidophy 11a, Spring. Monogr. 2, p. 27. Lycopodium 
lepidophyllum, Hook, et Grev. — Mexico. 
Order V. — MARSILEACE.ZE. 
Plants growing in, or floating in water (rarely not in water), 
very various in character, consisting of grass or trefoil-like 
leaves, or branched with imbricated leaves, bearing sporangia 
(conceptacles*) at their roots, or base, or on the footstalks, or on 
small branchlets on the under side, which are 1-4, or many- 
cefled. 
161. MARSILEA, Linn. 
Plants with quadrifid (trefoil-like) leaves on a long footstalk, 
from a rhizome growing under water. Sporangia ( conceptacles ) 
borne on the rhizome at the base of the footstalk, or pedicellate 
* A hollow case containing spore- cases j a compound sporangium 
