432 ILLUSTRATION OF THE BOTANY OF [ Lycopodiacee. 
diffused in the southern hemisphere, being found in New Holland and Van Diemen’s 
Land, as well as in the Straits of Magelhaens, in South and also in North America, 
occurs also in India, having been found by Dr. Hamilton to the eastward of Bengal, 
and by myself in Behar. The species appears to be nearly allied to, if not identical 
with, A. pinnata, found in New Holland. 
201. LYCOPODIACEZ. 
The Lycopodiacee, named from Lycopodium, or Club-moss, are distinctly characterized 
by their 8rgans of reproduction. Dr. Lindley says they are intermediate, as it were, 
between Ferns, and Conifere, on one hand, and Ferns, and Mosses, on the other; related 
to the first of these tribes in the want of sexual apparatus, and in the abundance of 
annular ducts contained in their axes; to the second, in the aspect of the stems, of 
some of the larger kinds; and to the last, in their whole appearance. The genera 
usually included in the order are, Lycopodium, Psilotum, and Isoetes. The last is by 
some referred to Marsileacea, but Endlicher has formed it into a separate order, which 
he conjoins, however, in a class with Lycopodiacee. The species of Jsoetes are all found 
submersed, in Europe, Central, and S. Asia, as well as in N. America; they are all 
considered varieties of J. palustris by Sprengel; but I. setacea, found in the S. of 
France, is no doubt a distinct species, and appears identical with S. indica, Wall. Cat. 
7072, which is probably the same as J. coromandeliana. Psilotum consists of three or 
four species, found within the tropics of both worlds, and (P. truncatum) in temperate 
regions of the southern hemisphere. P. triquetrum, a species found in Tropical America, 
the Sandwich Islands, New Holland and Mauritius, was obtained by Dr.Wallich in 
Nepal, and by myself from Cashmere. The specimens from the three last localities 
differ in no respect from each other, but those from Penang, Ava, and the Indian 
Peninsula, differ from the former, as well as the last from the two former, and may 
form varieties of, if they be not a species distinct from, P. triguetrum. 
Lycopodium, which forms the great bulk of the order, as consisting of about 150 
species, is found in all parts of the world, growing both on the earth and on trees, and 
in very hot, as well as in very cold, countries, but most abundantly within the tropics, 
where they are large, and highly ornamental, from the delicate richness of their foliage ; 
but that they are not confined to such situations, is evident, from whole tracts in the 
north of Europe, being covered with Lycopodium alpinum and selaginoides. Species are 
also found on the tops of our coldest mountains; and they occur as far south, as Van 
Diemen’s Land, and the Straits of Magelhaens. In India they are found, both in hot, 
and cold, parts of the country, though entirely absent from the dry plains. ‘Those obtained 
in the Peninsula, are chiefly Lycopodium Phlegmaria, and L.cernuum, which occur also 
in Mauritius and Penang, as well as in the Delta of the Ganges, and in Silhet. 
L. ornithopodioides, canaliculatum, and plumosum, are other Peninsular species. L. imbri- 
catum is found in Bengal, and L. circinatum, apparently identical with Thunberg’s 
plant, was found by Dr. Hamilton in Behar, and by myself in the Central Range; I 
have 
