ZANNICHELLIACEAE ' 



Also in Eu. and Asia. — Pennsylvania : Northampton ; Huntingdon, 

 Juniata River ; Lancaster ; Erie. 



2. Fotamogeton Oakeslanus Robbins. Oakes' Pondwbed. (Man. 

 p. 42 ; I. v./. 143.) In still water, Anticosti to N. J. and Pa. — Pennsyl- 

 vania : Monroe, Pocono Plateau. 



3. Fotamogeton amplifolius Tuckerm. Large-leavbd Pondweed. 

 (Man. p. 43 ; I. F. y; I44-) In lakes and ponds, Ont. to Br. Col., Conn., 

 Ky. and Neb. — Pennsylvania : Northampton ; LEhigh ; Bucks, Bristol. 



4. Fotamogeton pulcher Tuckerm. SPOTTED Pondweed. (Man. p. 

 43 ; I. F./. f4S-} In slow streams or ponds. Me. to Mo. and Ga. — Penn- 

 sylvania : Northampton ; Lehigh ; Bucks, Bristol ; Franklin, Mer- 

 cersburg. 



5. Fotamogeton Nuttallii Cham. & Schlecht. Nuttall's Pondweed. 

 (Man. p. 43 ; I. P. /. 146.) In ponds and streams, N. S. to Pa. and S. C. 

 — Pennsylvania: Monroe, Tobyhanna; Northampton, Easton; Ches- 

 ter, Oxford ; Lancaster ; Clinton, Beaver Meadows ; Lycoming, Sus- 

 quehanna River ; Warren ; CENTRE, Bear Meadows ; ERIE. 



6. Fotamogeton alpinus Balbis. Northern Pondweed. (Man. p. 

 43 ; I. F./ 147.) In ponds, N. S. to Br. Col., N. J. and Calif. Also in 

 Eu. — Pennsylvania : Lycoming, Susquehanna River ; Huntingdon, 

 Little Juniata River ; Lancaster, Susquehanna River. 



7. Fotamogeton lonchites Tuckerm. Long-lEaved Pondweed. 

 (Man. p. 43 ; I. V.f. 148.) In ponds and slow streams, N. B. to Wash., 

 Fla. and Calif. — Pennsylvania : Northampton, Easton ; Lycoming ; 

 Delaware; Lancaster, Safe Harbor; Dauphin, Harrisburg ; Hunt- 

 ingdon, Alexandria. 



8. Fotamogeton beterophyllus Schreb. Various -leaved Pond- 

 weed. (Man. p. 44; I. F. /. ijo.) In ftill or flowing water, nearly 

 throughout N. A. Also in Eu. — Pennsylvania : York, McCall's Ferry ; 

 Lancaster ; Erie. 



8a. F. beterophyllus graminlfolius (Fries) Morong. (Man. p. 44.) — 

 With the type. Erie, Presque Isle. 



9. Fotamogeton Zizii Roth. Zlz'S PondwEBD. (Man. p. 44 ; I. F. 

 f. 153.) In lakes and streams, Quebec to Mont., Fla. and Wyo. 

 Also in Eu. — Pennsylvania : Crawford ; Erie, Presque Isle. 



10. Fotamogeton lucens L. Shining Pondweed. (Man. p. 45; 

 I. F. /. IS4.) In ponds, N. S. to Calif., Fla. and Mex. Also in Eu. — 

 Pennsylvania : Specimens apparently referable to this species have been 

 collected in the Susquehanna and Delaware Rivers. 



11. Fotamogeton perfoliatus L. Clasping-lEaved Pondweed. 

 (Man. p. 45 ; I. 'P.f. IS^-) 1° ponds and streams, Newf. to Br. Col., Fla. 

 and Calif. Also in Eu. and Asia. — Pennsylvania : Northampton, Dela- 

 ware River; Delaware; Lancaster, Susquehanna River; Dauphin, 

 Susquehanna River ; Lycoming, Susquehanna River ; Huntingdon, 

 Juniata'River. 



11a. F. perfoliatus Richardsonii A. Bennett. (Man. p. 45.) — North- 

 ampton, Easton. 



