74 . CATALOG OF PLANTS. 



33. Selaginella apus (L.) Creeping selaginella. — Common on clamp 



grx»und at Bay port and Sebewaing. 



34. Taxus canadensis Marsh. American yew. — Noticed at Bayport, 



Sand Point, Point aux Barques, and near Rush Lake. 



35. Pinus strobus L. Whi-te pine. — Small trees are frequent 



throughout the sand region, and formerly large trees were 

 abundant but have been cut by lumbermen. Occasional on 

 the islands of Saginaw Bay. Seedlings abundant. 



36. Pinus banksiana Lamb. Jack Pine. — More or less common 



throughout the sand dune district. Abundant at Sand 

 Point, west of Caseville, and west of Port Austin. Not 

 noticed on the islands of Saginaw Bay, except one small 

 tree on Charity Island. Seedlings abundant. Apparently 

 a tree of little value. 



37. Pinus resinosa Ait. Red pine; Norway pine. — Frequent 



throughout the sand dune district and formerly abundant. 

 Fine specimens still exist west of Caseville and on big Charity 

 Island. Seedlings abundant. 



38. Larix laricina (Du Roi) Koch. Tamarack. — Occasional through- 



out the sand region and formerly abundant in low wet ground, 

 but now nearly exterminated by cutting, drainage and fires. 



39. Picea mariana (Mill.) BSP. Black spruce.— Occasional and 



formerly much more abundant. Noticed at the west end of 

 Sand Point, at Bayport, Caseville, and Point aux Barques. 

 On a small island in Rush Lake the trees are being killed by 

 a parasite, the dwarf mistletoe. 



40. Picea abies (L.) Karst. Norway spruce. — Planted as an orna- 



mental tree and thriving, but not spreading. 



41. Abies balsamea (L.) Mill. Balsam fir. — Occasional. Over .50 



trees were noticed at the east end of Sand Point and a few 

 near Bayport and Point aux Barques. 



42. Tsuga canadensis (L.) Carr. Hemlock. — Occasional throughout 



the sand district. 



43. Thuja occidentalis L. White cedar; arbor vitae. — Frequent 



in wet places between sand dunes throughout the sand 

 district. Formerly much more abundant, but- has been 

 cut and destroyed by fires. 



44. Juniperus communis L. Common juniper. — Freciuent through- 



out the sand dune district. Abundant west of Port Austin. 



45. Juniperus communis depressa Pursh. Low juniper. — Occasional 



near Caseville. 



46. Typha latifolia L. Common cat-tail — Common in wet, boggy 



places.- 



