172 | TETRANDRIA TETRAGYNIA. Potamogeton. — 
Nat, of Britain. 
FI. June and July. ‘ ae H. 2. a 
peétina-. » P. foliis fetaceis parallelis approximatis diftichis, 5p, 
tum, pl. 183. 
Fine leav’d Pondweed, 
ite: Nat. of Britain. 
Fi, June and July. | H. 4. 
gramine- 8. P. foliis lineari-lanceolatis alternis fefiilibus flipula la 
WM. tioribus. Sp. pi. 184. . 
ma . Grafly Pondweed. 
Nat. of Britain, 
Fi. June. . H, 4. 
pufillum. 9. P, foliis linearibus oppofitis alternifque diftingis 
bafi patentibus, caule tereti. Sp. pl. 184. 
Small Grafs-leay’d Pondweed. 
ee Nat. of Britain, 
Fi. July and Auguft, H, 4, 
SAGINA. Gen, ph 176. 
Cal, 4-phyllus. Petala 4. Capf. 1-locularis, 4-valvis, 
polyfperma. 
1. S. ramis procumbentibus. Syft. veget. stig. Cte 
_ dond. 
Pcoscthee Pearl-wort, 
Nat. of Britain, 
Fl. June, H. ©. #: 
2. S. caule eredinfelo pubefcente, floribus alternis ape 
talis, Linn, mant. 559. Curt. lond. 
; 
