Drummondiane N. O. Marsileacez. 
DCCCCIX. 
MARSILEA MACROPUS. 
Foliis peltatis quaternis petiolisque elongatis sericeo-tomen- 
tosis, foliolis lato-cuneatis apice erosis, pedunculis subradi- 
calibus elongatis biuncialibus, capsulis oblique ovatis dense 
sericeo-strigosis transversim lineatis hinc basi gibbosis, 
caudice repente ramoso. 
Has. Australia, low inundated grounds; Lachlan river and 
Liverpool plains, All. Cunningham. Severn river, 8. W. 
Australia, Drummond. 
Our finest specimens are sent from Swan river, among the 
later collections of Mr. Drummond. It is a species of Marsilea, 
as far as I can find, hitherto quite undescribed ; remarkable 
for the very sericeously tomentose leaves, (especially the 
underside), and petiole and capsules, and for the great length 
of the peduncles of the latter. 
e caudex creeps for some length, and is scarcely so thick 
as a crow’s-quill, rooting, branched, and knotty ; the knots 
are densely woolly with ferruginous hair, and seem to be the 
rudiments of a new cluster of fronds. Fronds or leaves from 
the apex of a woolly knot or branch, two to four from one 
point. Petioles from four inches to a span long, erect, flexuose 
about two inches long, in other respects resembling the pe- 
tioles; these are i 
Fig. 1. Leaflet. f. 2. Capsule. f. 3. The same cut through 
transversely. f. 4. Hairs from the Capsule :—all more or less 
magnified. 
