Potamogeton alpinus Balb.

Revision Broad-leaved N. Am. SpetQies of Potamogeton
POTAMOGETON ALPINUS Balbis
var. TENUIFOLIUS (Rafinesque) Ogden
E.C.Ogden 1939
STSM-ANATOMY EXAMINED BY B.O.OflDBH, /937
STELE: C&J	^II	CS-^ ©
ENDODERMIS: O-cblls JL 0 } U-cblls §900
INTERLAiCUNAR BUNDLES: Ab-sbm-T: Prbsbht: outbr circle, throughout
SOBEPIDERMAL BUNDLES: Absbnt: Prbsbnt.
PSEUDO-HYPODERMIS: Absbnt~Prb3«wt.
NEW YORK BOTANICAL GARDEN.
EXPLORATION OF MONTANA AND YELLOWSTONE PARK.
No. 3725
Potamogeton heterophyllus graminifolius
(Fries) Morong.
SHOSHONE LAKE, AUGU8T 10, 1897.
P. A. Rydberg, X „____
ERNST A. BESSEY, ) COLI-EOTORS.
Altitude, 7500 Feet.
03708248