VASCULAR CRYPTOGAMS. 
BY WILLIAM CARRUTHERS, F.R.8. 
SALVIXIACK.F. 
AZOLLA Lam. Encycl. Meth., Bot. i. p. 343 (1783). 
A. phinata 1!. Br., Prodr. p. 167 (1810). 
Pi NGO ANDONGO. — Not infrequent in most rivers between PuDgO 
Andongo and Cassange. The frond is whitish green, and then turns to 
rose-purple, it is found with Nymphcea, Ceratophyllum and Pistia. 
March 1857. No. 38. 
LlBONGO. — Very abundant, both on the earth and in the water, in 
the shallow lake at Banza de Libongo, near the left bank of the Lifune 
with Hydrocotyle, Juncacea, etc. Sept. L858. No. 37. 
MARSILEACEjE. 
MARSILEA Linn. Gen. PL p. 326 (1737). 
1. M. cornuta A. Br. in Monatsb. K. Akad. Wissensch. Berlin 
L870, p. 728. 
M. diffusa var. cornuta A Br. in Kuhn, Fil. Afr. p. 199 (1868). 
.}/. diffusa var. Baker, Fern Allies p. 141 (1887). 
MosSAMEDES. Common in shallow pool? near the banks of the 
Bero, near Capondo and Cavalheiros. At the end of June 1859. 
No. 173. Frequent, in association with Pistia in lakes near the mouth 
of tli< river Giraul or Maiombo. Without fruit, 18 and 19 July 1859. 
No. 174. 
2. M. rotundata A. Br. in Kuhn, Fil. Afr. p. 200 (1868). 
Gou'Ni.n A i.tii Somewhat rare in the rivulet Muchau or Mongols 
near Quilombo, in wooded places : 17 Sept. 1854. No. 40. 
Pungo Andongo. On the margins of marshes between Lombe and 
Quibinda. Without fruit ; March 1857. No. 39. 
Hlili.a. — In pools near the river Mumpulla in association with 
Ottelia. In fi. .June I860. No. 171. In wet ground between the 
Serra de Xella and Mumpulla along with Trifolium, Juncus and Xyris. 
Oct. 1859. Xo. 172. 
3. M. muscoides Lepr. ex A. Braunin Flora xxii. p. 300 (1839). 
Lo \m>a. — In moist clayey mud, even spreading into neglected culti- 
vated places, uear Loanda, Bemposta, towards Camaina : infr. 18 May 
1859. No. 109. 
Bi.m;i i.i.i.a.— In moist sandy muds, inundated in summer, on the 
shore between the city of Benguella and S. Ferrao dos Bimbos ; in 
fr. June L859. No. 175. 
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