CATALOG OF PLANTS. 73 



Point. Stony Island. Bifi Charity Island, and near Rush 

 Lake. 



13. Asplenium spinulosum intermedium (Muhl.) D. C. Eaton. 



Spinulose shield-fern. — Fre(iuent in damp woods at Caseville, 

 Port Austin, and on North Island. 



14. Cystopteris bulbifera (L.) Bernh. Bladder fern. — In damp 



woods at Sand Point and east of Bayport. 



15. Cystopteris fragilis (L.) Bernh. Brittle fern. — Under over- 



hanging rocks west of Grindstone City. 



16. Woodsia obtusa (Spreng.) Torr. Blunt-lobed woodsia. — ''Grow- 



ing abundantly in crevices in the overhanging rocks on the 

 lake shore near Port Austin." Davis. 



17. Onoclea -sensibilis L. Sensitive fern. — Common in damp places. 



18. Onoclea struthiopteris (L.) Hoffm. Ostrich fern. — Low bank 



of Pigeon River near Caseville. 



19. Osmunda regalis L. Flowering fern. — Common in low places 



between sand ridges. 



20. Osmunda cinnamomea L. Cinnamon fern. — Occasional in damp 



])laces. 



21. Botrychium virginicum (L.) Sw. Rattlesnake fern. — Rich 



woods at Sand Point, Sebewaing and near Rush Lake. 



22. Equisetum arvense L. Common horsetail.— Common, especially 



on damp sand. 



23. Equisetum sylvaticum L. Wood horsetail. — Freciuent on damp 



shaded ground. 



24. Equisetum fluviatile L. Pipes. — Common in very wet places 



and in shallow water. 



25. Equisetum hyemale L. Scouring rush. — Frequent on sandy 



and dry shaded ground. 



26. Equisetum hyemale intermedium A. A. Eaton. Scouring rush. 



— Common on sandy ground at Sand Point and Caseville. 



27. Equisetum hyemale robustum (A. Br.) A. A. Eaton. Scouring 



rush.- — Occasional on sandy ground at Sand Point. 



28. Equisetum variegatum Schleich. Variegated eciuisetum. — Lake 



Huron shore east of Caseville, on damp sand. 



29. Lycopodium lucidulum Michx. Shining cluli moss. — East end 



of Sand Point, among hemlocks. 



30. Lycopodium clavatum L. Common clul) moss.— In dr>- woods, 



east end of Sand Point. 



31. Lycopodium complanatum L. Trailing Christmas-green. — 



Frequent on sides of sand dunes but not abundant. 



32. Lycopodium tristachyum Pursh. Trailing club moss. — "Com- 



mon on sand dunes east of Port Crescent." Davis. 



