144 ON THE SELAGINELLAS CULTIVATED IX 
** 
Widely branched ; spikes branchlike. 
7. Selaginella Helvetica, Link. A South European species, but 
not so coinmon in gardens as it should be. 
8. Selaginella denticulala, Link. (S.obtusa,obtusata,Roi±) Also 
from the south of Europe ; like S. Helvetica, and quite dis- 
tinct from the S. denticulata of gardens. 
*** 
Pinnately branched ; spikes at the ends of the branchlets. 
9. Selaginella deiicathsima, A. Bi\ In gardens as S. micro- 
phylla. A little like S. apus, but with very minute leaves. 
Its native country is unknown. 
10. Selaginella serpens, Spr. From Jamaica, Cuba, and Mexico. 
Very abundant, under the names S. wutabilis, variabilis, 
and Jamaicensis, Hort. (#. argentea, Hort. Veitch.) The 
colour of this species varies at different times of the day. 
The large leaves are ovate. 
11. Selaginella sarmentosa, A. Br. (£. Whartoni, Hort., S. patula, 
Spr. ?) A West Indian species not common in gardens ; 
not unlike the preceding, the leaves, however, narrower. 
12. Selaginella uncinata, Spr. (S. casia, Hort.) A well-known 
bluish-green coloured species from China. 
13. Selaginella Breynii^r. (S. Panamensis, Hort., Pceppigiana, 
Hort. Van Houtte.) A very pretty South American spe- 
cies, but not in cultivation in this country. 
j8. Adscendentes. — Surculi ascending, often sending off aerial roots; 
branches pyramidal or fastigiate. 
* Persistentes. — Perennial, producing buds (innovations) from the 
unchanged apices of the surculi. 
14. Selaginella Martensii, Spr. A very variable species from 
Mexico and Brazil, 
(a) S. Martensii, var. normalis, A. Br. (S. Martensii, stolo- 
nifera, sulcata, decomposita, and pulla, Hort.) 
(/3) S. Martensii, var. Jiaccida, A. Br. (S. alata, circinalis, 
Hort.) 
(y) S. Martensii, var. compacta, A. Br. (S. Huegelii, Daniel- 
siana, momtrosa, asplenifolia, formosa, robusta, Hort.) 
(8) S. Martensii, var. divaricata y A. Br. (& dichotomaj^' 
uosa, Hort.) 
