CXLIV. LYCOPODIACER. 471 
—Stems rigid, erect, slender, angled, irregularly-branched. Leaves few and 
scale-like. Capsules in the angles of the scales. 
Orper CXLV. MARSILEACEZ. 
Capsules of 2 kinds, 1 containing a single large spore, and 
the other numerous minute ones. In some genera both kinds 
of capsule enclosed in a common, many-celled receptacle. 
Marsh or water plants of very various habit. 
1. MARSILEA, Linn. 
Spores of both kinds contained in the same receptacle, 
which is placed at or near the base of the long petioles of the 
4-foliolate fronds. 
1 Cape species, with the fronds of a 4-leaved shamrock. 
2. AZOLLA, Lam. 
Receptacles very minute, of 2 kinds, hanging from the lower 
side of the branches of a pinnate frond with minute imbrica- 
ted leaves. 
1 Cape species ; a minute, pinnately-branched, moss-like, floating water- 
plant. 
Orver CXLVI. EQUISETACEA, 
Spores surrounded by elaters, placed on the under side of 
stalked, peltate scales, which form cones at the apex of the 
stems. Stems erect, cylindrical, fluted, jointed, hollow be- 
tween the joints, which terminate in toothed sheaths. 
Only 1 genus, Hquisetum, represented at the Cape by a single species, in 
which there are no whorls of small branchlets, as is often the case, from the 
nodes of the main stem, which is erect, copiously and regularly striated, 
and abounds in silica. 
ADDENDUM. 
AMERINA TRIPHYLLA, 4. DC. in DO. Prod. v. 9, p. 518 
(Ehretia triphylla, Hochst. Herb.), a plant gathered in Natal 
by Krauss, and doubtfully referred by A. De Candolle to the 
American genus Amerina, is wholly unknown to me. 
