704 SELAGINELLACEZ. 
Order CLXIV. SELAGINELLACE. 
As now limited to heterosporous genera this Order includes only Selaginella and 
Isoetes. We have seen no specimen of any species of the latter genus from within our 
limits, and no record of the occurrence of any; yet it is very probable that the genus 
is represented, for out of forty-six species enumerated by Baker (Journ. Bot. 1880), 
eleven, mostly endemic, inhabit North America, and some of them the countries 
bordering Mexico, from Texas to California. Further, one species is peculiar to Cuba _ 
and four or five to South America. 
1. SELAGINELLA. 
Selaginella, Beauv. ; Spring in Regensb. Bot. Zeit. 1838, i. p. 148, et Monogr. Lycopod. ii. p. 52 ; 
J. G. Baker in Journ. Bot. 1883, p. 1, et passim 1883, 1884 et 1885. 
Mr. Baker’s recently finished synopsis of the species of this genus in the ‘ Journal of 
Botany’ contains 312 species, respecting the general distribution of which he says:—“ The 
genus is concentrated in the tropical zone and has its head-quarters in Tropical America. 
Only two species extend their range into Europe, and the Cape; Temperate Australian 
and South Temperate American species are neither numerous nor remarkable. In the 
New World and the Old World the species are entirely different, with but one exception 
amongst the distichous-leaved tropical species, S. flabellata, and two of the multifarious- 
leaved species, S. rupestris and S. spinulosa, both of which are characteristically 
temperate types. It is very rarely that any of the tropical species is found in more 
than one of the three continents, but it will be seen that three out of the four subgenera 
and most of the subordinate groups are represented alike in America, Asia, and 
Africa.” 
In North America, north of Mexico, the species are few, but the genus is represented 
northward into the arctic regions by S. spinosa. The other species on the eastern side 
are S. rupestris and S. apus; on the western side are S. douglasit and S. oregona, the 
former reaching British territory and the latter peculiar to the region of its name; and 
S. lepidophylla and 8. californica occur in Lower California, the latter being endemic. 
The genus does not reach New Zealand nor Juan Fernandez, where, as stated under the 
order Lycopodiaceee, no Lycopodium is known to exist, which is a remarkable fact, 
considering the large number of ferns in this insular flora; and only two or three 
species extend as far south as Chili. 
1. Selaginella apus, Spring, Monogr. Lycopod. ii. p. 75 ex parte; Baker in 
Journ. Bot. 1884, p. 112; Fourn. Mex. Pl. Enum. i. p. 147. 
Canapa to Texas.—Souta Mexico, Orizaba (Schaffner ex Fourn.). 
We include this on Fournier’s authority, who also records it from Peru and Brazil, 
thus taking the same view of the species as Spring. Whether the Mexican specimen 
belongs to the genuine S. apus we have no means of telling. Baker says of this species 
