MICHIGAN FLORA. 499 



PINUS 



rravViie 6, 1061. Banksiana, Lambert. 



Gray Pine. 



In the western part of the State, noticed as far south as Newaygo Co.(!); 

 "Sand Pt., Saginaw Bay, and northward along the shore of L. Huron, not 

 common."— Winch. Cat. In the Central part of the State this pine is first 

 seen in the northern part of Clare Co.(!), where it is common in groves 

 on sandy barrens. In the S. E. township of Missaukee Co., along the 

 west bank of the Muskegon river, occurs a barren terrace, about five 

 miles long by two wide, which is covered with groves of this pine in all 

 stages of growth from seedlings to fine shapely trees 50 to 60 feet in 

 height, and 12 to 14 inches in diameter. The groves were not dense, but 

 orchard-like, and disposed without regularity. There was little under- 

 growth except occasionally a few sand-cherries, stunted service bushes, 

 and the rare alpine, three-toothed cinquefoil. The ground was barely 

 carpeted with tufts of panic grass (P. depauperatum, L.,) bird-foot violet, 

 and bear berry. 



Red Pine.. 1062. resinosa, Ait. 



Norway Pine. ..,.».„„. ... T „ . , 



Dry woods. First noticed in Isabella Co., in center of the L. P. ; very abund- 

 ant in Clare Co.(!), and northward. "Frequent on low, sandy plains in 

 U. P., where it forms orchard-like groves."— Whitney. Usually 100-110 

 feet high. 



White Pine. i 063t Strobus, L. Til. 



Ranges from at least Mason, Ingham Co., in the center of the State, north- 

 ward. Follows the shore of L. Michigan to the Indiana line. Usually 

 3 to 4 feet in diameter and 100 feet high, but often larger. Furnishes 

 the pine lumber of commerce. The tallest white pine we have measured 

 was 134 feet, and the largest diameter, scant 6 feet. Much taller and 

 larger specimens are reported by lumbermen. The annual production 

 of pine lumber in Michigan for the last decade has exceeded 2,000,000,000 

 feet. Yet, in spite of this enormous consumption, it is safe to say that 

 Michigan still contains more valuable pine than any like area in North 

 America. The lumber interest alone enriches the State something like 

 §40,000,000 a year. 



ahace^:. 



{Arum Family.) 



ARIS.EMA 

 SSSSZ 1 * 1004. triphylluu, Torr. (***) Th. 



Pulpit. Rich woods. 



Green Dragon. 1065. Dracoiltilim, Scliott. (***) 0. & S. 



Dragon Root. ^ ^^ Infrequent. 



PELTANDRA 



Arrow Arum. 1066. Virginica, Ilaf. 0. & S. 



S. Mich.--Wright Cat.; Huron River— Allmendinger Cat.; Ionia Co.(!); 

 Flint. 



CALLA 



Water Arum. 1067. palustris, L. Th. 



Bogs. Frequent. 



SYMPLOCARPUS 



skunk cab. 1068. fcetidus, Salisb. (**) Th. 



bage. ' v 



ACORUS 

 sweet Flag. 1069. Calamus, L. (**) Th. 



Margin of streams. Infrequent. 



LEMNACE^E. 

 (Duck-weed Family.) 



LEMNA 



Duckweed. 1070. tl'isillca, L. 0. & S. 



Duck's-meat. pondg Common. 



