BEAL ON MICHIGAN FLORA. 19 



PLANTS PECULIAU TO THE PKAIRIES. 



The followiug' plants are peculiar to the prairie region of the south- 

 western portion of the State : 



Amorpha canescens Pursh. Lead-Plant. 

 Asolepias verticillata L. Milkweed. 

 Aster sericeus Vent. Aster. 

 Atheroposon curtipendulus (Michx.) Pourn. 

 {Boiiteloua curtlpendula (Michx.) Torr.) 

 Baptisia leucantha Torr. & Gray. False Indigo. 

 Brauneria purpurea (L.) Britton. Cone-Flower. 

 (Echinacea imrpurea Moench.) 

 Coreopsis palmata Nutt. 

 Helianthus scaberrimus Ell. Sunflower. 

 (Helianthus rigidus Desf.) 

 Phlox bifida Beck. Phlox. 

 Silphium integrifolium Michx. Rosin-weed. 

 Silphium laciniatum L. Compass-plant. 

 Silphium perforatum L. Cup-plant. 



OVERLAPPING OF NORTHERN AND SOUTHERN SPECIES IN THE GRAND RIVER 



VALLEY, 



Northern Species. 



Carex Magellan ica Lam. Sedge. 



Carex pauci flora Li.ghtf. Sedge. 



Carex tenuiflora Wahl. Sedge. 



Dracocephalum parviflorum Nutt. Dragon-head. 



Eriophorum vaginatum L. Cotton-grass. 



Lonicera oblongifolia (Goldie) Hook. Swamp Fly-Honeysuckle. 



Mimulus Jamesii T. & G. Monkey-flower. 



Primula Mistassinica Michx. Primrose. 



Symphoricarpos pauciflorus (Robbins) Britton. Snowberry. 



(Symphoricarpos racemosus pauciflorus Robbins.) 



Taxus Canadensis Willd. American Yew. Ground Hemlock. 



Southern Species. 



Asimina triloba (L.) Dunal. Papaw. 

 ' Bidens trichosperma tenuiloba (A. Gray) Britton. Tick-seed. Sunflower. 

 (Coreopsis triehospervia var. tenuiloba A. Gray.) 

 Cassia Marylandica L. Wild Senna. 

 Cercis Canadensis L. Red-bud. Judas-tree. 

 Chaerophyllum procumbens (L.) Crantz. 

 Collinsia verna Nutt. Blue-eyed Mary. 

 Eleocharis interstincta (Vahl.) R. & S. Spike-rush. 

 (Eleocharis equisetoides Torr.) 

 Eleocharis mutata (L. ) R. & S. Spike-rush. 

 (Eleocharis quadrangulata R. & S.) 

 Eleocharis olivacea Torr. Spike-rush. 

 Eleocharis Robbinsii Oakes. Spike-rush. 

 Eleocharis rostellata Torr. Spike-rush. 

 Erigenia bulbosa (Michx.) Nutt. Harbinger of Spring. 

 Gymnocladus dioica (L. ) Koch. Ky. Colfee-tree. 

 (Gymnocladus Canadensis Lam.) 

 Hicoria laciniosa (Michx. f.) Sarg. King-nut. 

 (Caryn sulcata Nutt.) 

 Hemicarpha micrantha (Vahl.) Britton. 

 (Hemicarpha subsquarrosa Nees.) 

 Liriodendron Tulipifera L. White-wood. Tulip-tree. 

 Meibomia Marylandica (L.) Kuntze. Tick-Trefoil. 

 (Desmodium Marilandicum Boot.) 

 Morus rubra L. Red Mulberry. 



