I. 
GRASSES. 
237 
1. Myriophyllum fpkatum. L. 1409. Boiamogiton 
His pennatis. Tourn. 233. R. 150. Millefolium aquatU 
turn pennatzmi fpicaiunu B. 141. — b. iVL aquaticum 
fennatum mims^ folioUs ftngularihus latiufcuUs flofculis 
fubjedis donatum, Mor. hilt. 3. 622. R. 151. Spiked 
Myriophyllum. Feathered water Milfoil. Male 
Rowers interruptedly fpicate. In waters. 7 /;. VI. 
VII. 
2. Myriophyllum verticillatim, L. 1410. Pentaptero- 
phyllon a'quaticum flofculis ad foliorum nodes. Dill. GilT. 
112. et app. 178. R. 316. Millefolium aquaticum'flof- 
cults ad foliorum nodos, B. 141 . Verticillate Myriophyl- 
lum, Flowers all verticillate. In brooks. About 
Cambridge. 7 p. VII. 
Ceratophyllum. Flowers monoicous, calyx 
multipartite, (lamina from (ixteen to twenty, no 
(lyle, one feed. 
1. Ceratophyllum demerfum. L. 1409. Hydrocerato^ 
phyllon folio afperOy quatuor cornibus armato. Mem. 
Par. 1719. 16. R. 135. Rough Ceratophyllum. 
Horned Pondweed. Leaves dichotomo-bigeminate, 
fruits thorny. In ditches and ponds. 7 p. VII. 
2. Ceraiophyllum fubmerfum. L. 1409. Hydrocerato^ 
phyllon folio lavt^ 06I0 cornibus Ur mat 0. Mem. Par. 
1719. 16. R. 135. Smooth Ceratophyllum. Leaves 
dichotomo-tergeminate, fruits unarmed. In ditcher 
near Chichefter. 
C L A S S XXL 
G R A M I N A. 
GRASSES. 
✓ 
N o corolla nor pericarpy, calyx irregular, one 
feed. 
The 
