BEAL ON MICHIGAN FLORA. 19 



PLANTS PECULIAR TO THE PRAIRIES. 



The following plants are peculiar to the prairie region of the south- 

 western portion of the State : 



Amorpha canescens Pursh. Lead-Plant. 

 Asclepias verticillata L. Milkweed. 

 Aster sericeus Vent. Aster. 

 Atheropogon curtipendulus (Michx.) Fourn. 

 (Bouteloua curtipendula (Michx.) Torr.) 

 Baptisia leucantha Torr. & Gray. False Indigo. 

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

 (Echinacea purpurea 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 perfoliatum L. Cup-plant. 



OVERLAPPING OF NORTHERN AND SOUTHERN SPECIES IN THE GRAND RIVER 



VALLEY. 



NORTHERN SPECIES. 



Carex Magellanica Lam. Sedge. 



Carex pauciflora Lightf. 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 trichosperma 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. 



Oymnocladus dioica (L.) Koch. Ky. Coffee-tree. 



(Gymnocladus Ganadensis Lam.) 



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



(Gary a 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.) 



Moms rubra L. Red Mulberry. 



