40 MICHIGAN ACADEMY OF SCIENCE. 



152. virescens, Muhl. Linden Park. Frequent. 



153. gracilliina, Sehw. In woods on Belle Isle. Common. 



154. grisea, Wahl. Borders of woods on Belle Isle. Frequent. 



155. granularis, Muhl. Woods on Belle Isle. Common. 



156. var. Shriveri, Britton. Vic. Linden Park. Frequent. 



157. viridula, Mx. Shores of Belle Isle. Not common. 



158. conoidea, Schk. Near Linden Park. Rare. 



159. laxiflora, Lam. Borders of woods on Belle Isle. Rare. 



160. var. blanda (Dew.) Boott. Roadsides on Belle Isle. Frequent. 



161. var. varians, Bailey. In grassy situations on Belle Isle. Common. 



162. tetanica, Schk. var. Woodii (Dew.) Bailey. Near Linden Park. Rare. 



163. var. Meadii, (Dew.) Bailey, Near Linden Park. Rare. 



164. digitalis, Willd. Linden Park. Common. 



165. aurea, Nutt. Linden Park. Common. 



166. pedicellata (Dew.) Britt. In woods at Linden Park. Common. 



167. Pennsylvanica. Lam. Near Palmer Park. Common. 



168. pubescens, jNIulil. In woods on Belle Isle. Frequent. 



169. stipata, ^luhl. Low grounds on Belle Isle. Not common. 



170. alopecoidea, Tuckerm., var. sparsispicata. Dew. Linden Park. Rare. 



171. vulpinoidea, Mx. In woods on Belle Isle. Common. 



172. xanthocarpa, Bicknell. Near Linden Park. Rare. 



173. rosea, Schk. Roadsides on Belle Isle. Frequent. 



174. var. radiata, Dew. In woods on Belle Isle. Common. 



175. sparganioides, Muhl. Roadsides on Belle Isle. Common. 



176. cephalophora, Muhl. In woods on Belle Isle. Common. 



177. Muhlenbergii, Schk. Frequent on sterile grounds near Palmer Park; 



also Linden Park. 



178. interior, Bailey. Marshy grounds on Belle Isle. Rare. 



179. Muskingumensis, Schw. In woods on Belle Isle. Common. 



180. tribuloides, Wahl. Common on low grounds on Belle Isle. 



181. var. moniliformis (Tuckerm.) Britt. With the species. Common. 



182. scoparia. Schk. Borders of woods on Belle Isle. Frequent. 



183. cristatella, Britt. In woods on Belle Isle. Common. 



184. straminea, Willd. Common on Belle Isle and elsewhere. 



185. var. mirabilis (Dew.) Tuckerm. With the species. Common. 



186. var. ferruginea (A. Gr.) Bailey. Near the old race-course. Rare. 



187. var. festucacea (Willd.) Tuckerm. With the species. Common. 



Order 4. Arales. 



FAMILY 9. ARACE.E. Arum Family. 



49. ARIS^.MA, Mart. 



188. triphyllum (Lin.) Torr. Indian Turnip. Belle Isle woods and else- 



where. Rare. 



50. ACORUS, Lin. 



189. Calamus, Lin. Sweet Flag. Marshy grounds on Belle Isle. Common. 



Order 5. Xyridales. 



FAMILY 10. PONTEDERIACE.E. Pickerel-weed Family. 



51. PONTEDERA, Lin. 



190. cordata, Lin. Pickerel-weed. Marshy grounds on Belle Isle. Common. 



Order 6. Liliales. 

 FAMILY 11. JUNCACEyE. Rush Family. 



52. JUNCUS, Lin. Rush. 



191. effusus, Lin. Marshy grounds on Belle Isle. Frequent. 



192. Balticus, Willd. Sandy shores of Belle Isle. Frequent. 



