Selaginella.] 
SELAGTNELLA.CE2E. 
525 
There is a specimen in Sieber’s Flora Mixta, No. 32o, localised as Mauritian, of 
S. mnioides , A. Braun (which includes S. ciliauricula , S. cirrhipes, and in part S. 
mnioides of Spring’s Monograph). This is an American species, with wide-trailing 
articulated stems, and no doubt, as in the case of Lycopodium Sieberianum, the 
assigned locality is a mistake. 
Order CXII. MAESILEACEiE. 
Fructification consisting of 2-4-celled 2-4-valved receptacles (sporo- 
carps), which contain both macrosporangia and microsporangia. Ma- 
crosporangia containing each a single spore (macrospore), which gives 
rise to a proth alius, which bears a single archegonium, which is 
fertilised by the antherozoids, of which many are contained in each 
microsporangium. — Water or swamp plants with wide-creeping thread- 
like rootstocks, the fronds circinate in vernation, either consisting of 
4 simple flabellately veined leaflets or reduced to a mere rachis. Dis- 
trib. Cosmopolitan. Species 50. 
1. MARSILEA, Linn. 
Receptacles 2-celled, 2-valved, the parietal placentas protruded when 
they burst in the form of gelatinous cylinders, which bear membranous 
sacs containing both oophoridia and antheridia. — Fronds consisting 
of 4 flabellately-veined small simple leaflets, at the summit of a com- 
mon petiole, from at or near the base of which 1 or more receptacles 
arise on separate or more or less thoroughly connate peduncles. 
Distrib. Tropical and warm temperate regions. Species 40-50. 
1. M. crenulata, Desv. ; A. Br. in Kuhn , Fil. Afr. 198. Root- 
stock thread-like, wide-creeping. Petiole many times longer than the 
glabrous leaflets, which are usually toothed round their outer border, 
except in large sterile aquatic forms of the plant. Receptacles several 
to a node, pilose when immature, glabrescent, horizontal, in. long, half 
as long again as broad, obliquely broad oblong, neither distinctly veined 
nor bordered, furnished with a single distinct or obscure tooth on the 
side to which the peduncle is attached ; peduncle free, basal, J-J in 
long. M. vulgaris and coromandelina, Bojer , Hort. Maur. 426. 
Mauritius, in ponds and swamps of the low country. Spread through the tropics 
of the Old World. According to A. Braun, Jf. diffusa , Leprieur, which mainly 
differs by having a couple of distinct teeth on the margin of the receptacle above the 
attachment of the peduncle, has been gathered in Mauritius by Perottet. 
