Potamogeton heterophyllus Schreb.

Examlntd f*r
NCRTH AMERICAN FLORA.
YORK BOTANICAL GARDEN
03710221
Revision Broad-leaved N. Am. Species of Potamogeton
POTAMOGETON GRAMINEUS Linnaeus
B.aogden 1941
STEM-AN ATOUT BXAUINED BY B.C.OQDBN, irw
€£$ ©
STILE:	_	ip	_
ENDODERM IS,: 0-cblls 0 0 , U-cblls "H ' 'Tfö 0 Q
INTERLACUNAR BUNDLES: Absbkt: Phbsbmti ootbb ciholb, throughout
S0BEPÏDERMAL BUNDLES: Ahb.wt, fuTfflf.. 11 " --
PSEUD0-HYP0.DERMI8: AbsbhT; Pbbsskt.
Prom the Herbarium of fledico-Chirurgical College,
Philadelphia.
SELKIRK FLORA.
CHARLES H. SHAW, 1906.
1200. Potamogeton natans, Linn. Marsh, Beaver-
mouth.
Determined by John Macoun.
August 24.
Altitude, 2400.
03710221