Synopsis of the Lycopodiacece of Guiana and 
their Allies. 
By G. S. Jentnan> F.L.$., Government Botanist of British Guiana* 
Series II. 
Order L— Selaffinellacea. 
(Concluded from vol. v, part i, p. 53.) 
PORANGIA of two kinds, larger and smaller; the former, 
macrosporangia, containing macrospores ; the latter, micros, 
porangia, containing microspores ; borne separately in the 
axils of normal or modified leaves, in which they are single, and free or 
partially embedded ; the macrosporangia being inferior in situation to 
the microsporangia. 
This order consists of two very dissimilar genera if 
only the physiognomy or conformation of the respeftive 
members be regarded. They are associated however by 
the character which they possess in common, of the 
sporangia and spores being of two kinds, one larger than 
the other, generally considerably larger; each kind of the 
spores possessing separate sexual potentiality, generation 
resulting from the intera6lion of the contents of the cells 
that are produced on their germination ; if this union is 
not effected the antecedent germs perish. 
Genus I.— Selaginella, Beauv. 
Sporangia bivalved, uniform, orbicular, or subglobose. Macros- 
porangia inferior, usually few, containing few large macrospores. 
Microsporangia superior, usually numerous, containing multitudinous 
minute microspores, borne in modified 4-gonai spikes, at the end of the 
branches. Leaves small or minute, generally of two kinds— rarely of 
one— major and minor, each kind bi-serial, imbricating or slightly 
apart, the larger series lateral and spreading from the axis obliquely or 
horizontally, the smaller intermediary, more or less in a line with and 
E2 
