406 Annals of the Carnegie Museum. 



Lycopodium clavatiim Linnseus. 

 Lycopodiiim complanatiun Linnaeus. 

 Lycopodium lucidulum Michaux. 

 Lycopodium obscurum Linnaeus. 



ISOETACE^. 



Lsoetes echinospora braunii (Durieu) Engelmann. 



A. P. Garber, July 28, 1868. Specimens in Carnegie Museum 

 Herbarium. 



PiNACEtE. 



Finns strobus Linnaeus. 

 Pinus virginiana Miller. 



Near the Head and evidently planted by U. S. Government. 

 Tsuga canadensis (Linnaeus) Carriere. 

 Juniper us virginiana Linnaeus. 



TvPHACE^t 



Typha latifolia Linnaeus. 



Sparganiace^. 



Sparganium eurycarpum Engelmann. 



Sparganium simplex angustifolium (Michaux) Engelmann. 



Gustave Guttenberg, July 9, 1879. Specimens in Carnegie Mu- 

 seum Herbarium. 

 Sparganium minimum Fries. 



Gustave Guttenberg, Aug. i, 1880. Specimens in Carnegie Mu- 

 seum Herbarium. 



NaI ADAGES. 



Potamogeton natans Linnaeus. 



Potamogeton lonchites Tuckermann. 



Potamogeton heterophyllus Schreber. 



Potamogeton heterophyllus graminifolius (Fries) Morong. 



" Erie, Presque Isle." '^ 

 Potamogeton zizii Roth. 

 Potamogeton lucens Linnaeus. 



Gustave Guttenberg, July 9, 1879. Carnegie Museum Herbarium. 

 Potamogeton perfoliatus richardsonii h.. Bennett. 



Gustave Guttenberg, Aug. 10, 1880. Carnegie Museum Her- 

 barium. 



»=* Porter, T. C. " Flora of Pennsylvania.'' Boston, 1903. 



