DESCRIPTIONS OF THE SPECIES 
3i3 
and again slightly branched at the tip, and the others are 
simple, and each one upward is shorter. Roots clustered, and 
with abundant rootlets. 
A.pinnata R. Br. Kunze, Linnaea , 10, 556; Baker , Fern Allies, 138; 
Kuhn, Fil. Apr. 202; C. Chr. Ind. 148. 
Australia, Africa, and Asia. 
West. — Incanhini, 10 ft, 1898 (R. Schlechter, 12,033); Cunene River 
marshes at Houmbe to Fort Rosadas, Angola (Dr H. H. W. 
Pearson). 
Natal. — In a valley near Umgeni, 100 feet alt. (Drege, Hb. Kunze). 
Portuguese East Africa. — Lake Ingwenya near the Portuguese Maputa 
(Prof. Wager, in Agr. Dept. Herb. No. 332, 1914). 
Kuhn gives “ Cape (Drege), Natal (Gueinzius).” 
Till Prof. Wager’s specimens arrived I had seen no Natal 
specimen, so the above description and figure are from 
specimens from the Niger kindly forwarded to me from 
Kew, but I have since seen the two west coast specimens 
above referred to, and the Maputa specimens, which all agree 
with the above. 
ORDER III. MARS ILI ACE AE. 
(. Included in Rhizocarpeae in our first edition .) 
Genus 54. MARSILIA Linn. 
Plants growing in water in constant pools, or where water 
is generally standing, but seldom in streams. Rhizomes 
slender, widely creeping, rooting freely, and frequently 
branching, producing from alternate sides petioles which, 
when in water, lengthen to the surface, and bear four-foliate 
leaves with cuneate leaflets. The stalked capsules also arise 
from the rhizome near the bases of the leaves, but are often 
only to be found on short branches from which the leaves 
are decayed. The capsules are oblong, two-valved, opening 
down the front, and contain a mucilaginous cord, on which 
at occasional intervals are produced groups of sporangia of 
both kinds ; those for the large spores containing only one 
spore, and those for the small spores many. 
In habit and appearance these plants nearly resemble 
clover, and they are readily eaten by cattle. 
