166 FLORA OF MICHIGAN. 



*1671. E. prateiise, Ehrh. Th. 



Macomb Co.; Flint ; to Pine Lake, Emmet Co., Winch. Cat. Rare. 



*1672. E. sylvaticum, L. Th. 



Ann Arbor, rare, Allmend. Cat.; Clinton Co.; Montcalm Co.; Flint and northward where it is 

 common. 



1673. E. palustre, L. U. P. 



Lake Huron to the Arctic sea, (Hook. Fl.) 



1674. E. littorale, Kuhlewein. 

 New Buffalo; Oscoda; Keweenaw Co., F. 



*1675. E. limosum, L. Th. 



In shallow water. Common. 



1676. var. polystaehyum, Bruckner. 



Keweenaw Co., Farwell. 



*1677. E. hyeinale, L. Scouring-Rush. Shave-Grass. Th. 



Wet banks. Common. 



1678. E. varieg-atum, Schleicher. Th. 



8. E., Winch. Cat.; Hubbardston; Muir; Macomb Co.; Flint; sand dunes at the head of Little 

 Traverse Bay; Drnmmond's I., etc.; Port Huron, C. K. Dodge. Infrequent. 



1679. E. scirpoides, Michx. Th. 

 Macomb Co.; Flint; Hubbardston; Petoskey; to L. Superior, Whitney Cat. 



CXI. FILICES. FERNS. 



535. POLYPODIUM, L. POLYPODY. 



*1680. P. vulgare, L. Th. 



Dry banks and rocks. Grand Ledge, Dr. Seal; Hubbardston, etc. Rarely seen in L. P., but very 

 common in U. P. 



536. ADIANTUM, L. MAIDENHAIR. 



*1681. A. pedatum, L. Th. 



Rich, moist woods. One of our most beautiful ferns. Common. 



537. PTEKIS, L. BRAKE OR BRACKEN. 



*1682. P. aquiliiia, L. Common Brake. Th. 



Thickets. Common. 



538. PELLJEA, Link. CLIFF-BRAKE. 



1683. P. gracilis, Hook. U. P. 

 Louse Is., W^nch. Cat. ; Pictured Rocks, G. H. Hicks. 



1684. P. atropurpurea, Link. 

 Shaded limestone rocks. N. E., Winch. Cat. 



539. CRYPTOGRAMME, R. Brown. ROCK-BRAKE. 



1685. C. acrostichoides, R. Br. U. P. 



Isle Royale, Gray's Manual; Caribou Island, Porter. 



54O. WOODWARDIA. Smith. CHAIN^ERN. 



*1686. W. Virgiiiica, Smith. Th. 



Marshes. Marquette Co., Burt MS. Cat.; Westville, Montcalm Co.; Macomb Co.; Flint; So. Haven, 

 Bailey; Hubbardston; Ann Arbor, Allmend. Cat. 



1687. AV. aiigustifolia, Smith, 



The only known locality for this fern in Michigan is at South Haven, where it was detected in 1880 by 

 L. H Bailey, Jr. 



