100 MICHIGAN ACADEMY OF SCIENCE. 



ABUTILON Gaertn. 



*1454. A. Abutilon (L.) Rusby. Velvet-leaf. A. Avicennae Gaert. Roadsides and 

 river banks. Very common in places, and, along with Datura Stramonium, forming 

 regular thickets. Alma, Ann Arbor, C. A. Davis. C. & S. 



HIBISCUS L. 



1455. H. Moscheutos L. Swamp Rose-mallow. Monroe; Flint; Put-in-Bay, Lake 

 Erie; St. Joseph, V. Willoughbv; Detroit, D. H. Campbell; Sai'gatuck, Tuthill. Rare. 

 C. & S. 



^1456. H. Trionum L. Bladder Ketmia. South, Dr. Wright; Ann Arbor, Winch. 

 Cat.; Flint; Ypsilanti, O. A. Farwell; Alma, Ann Arbor, C. A. Davis. Rare. 



HYPERICACE^E Lindl. St. John's-wort Family. 

 HYPERICUM L. 



1457. H. Ascyron L. Great St. John's Wort. South Haven; Ann Arbor; Ft. 

 Gratiot; Macomb Co.; Ionia; Stanton; Hubbardston; Alma; Crystal Lake; Flint; 

 .Ontonagon River, Whitney Cat.; Grand Rapids, Sones; Keweenaw Co., 0. A. Farwell. 

 Occurs at wide intervals and in small patches. Th. 



1458. H. boreale (Britton) Bicknell. H. Canadense boreale Britton. Keweenaw 

 Co., 0. A. Farwell. 



*1459. H. Canadense L. Canadian St. John's-wort. Ann Arbor, Miss Clark; L. Sup., 

 A. Gray; Keweenaw Co., 0. A. Farwell; Carp River, Porter; Alma. Infrequent. 



1460. H. ellipticum Hook. Ann Arbor, Miss Clark; Keweenaw Co., O. A. Farwell; 

 Carp River, T. C. Porter. Infrequent. 



1461. H. Kalmianum L. Kalm's St. John's-wort. Along the lakes; more common 

 northward. Manistee, F. P. Daniels; Fort Gratiot, Winch. Cat.; Petoskey; Port Austin, 

 C. A. Davis; S. W., H. S. Pepoon. Th. 



*1462. H. maculatum Walt. Spotted St. John's-wort. Common. Th. 



*1463. H. ma jus (A. Gray) Britton. Larger Canadian St. John's-wort. H. Cana- 

 dense mains A. Gray. St. Clair Co., Foerste; Flint; Fruitport and Old Mission, E. J. 

 Hill; L. Sup., A. Gray,. Vestaburg. Th. 



*1464. H. mutilum L. Dwarf St. John's-wort. Common. Th. 



*14C5. H. perforatum L. Common St. John's-wort. Ionia; Flint; Keweenaw Co., 

 O. A. Farwell. Infrequent. 



*1466. H. prolificum L. Shrubby St. J. A low, compact shrub. Frequent from C. 

 Southward. Th. 



SAROTHRA L. 



1467. S. gentianoides L. Pine-weed. Hyitericum nudicaule Walt. Ypsilanti. O. 

 A. Farwell. 



TRIADENUM Raf. ELODEA Pursh, not Michx. 



*1468. T. Virginicum (L.) Raf. Marsh St. John's-wort. Elodea campanulata 

 Pursh. Common. Th. 



CISTACE^) Lindl. Rock-rose Family. 



HELIANTHEMUM Pers. 



*1469. H. Canadense (L.) Michx. Frost-weed. Frequent. Th. 



1470. H. majus (L.) B. S. P. Hoary Frost- weed. Vestaburg, Davis and Wlieeler; 

 Muskegon, W. J. B.; Fife Lake, Alpena, C. F. Wheeler; Detroit, O. A. Farwell. 



HUDSONIA L. 



1471. H. tomentosa Nutt. False Heather. Shores of Great Lakes, A. Gray; S. 

 Mich., Winch. Cat.; L. Sup., Can. Cat.; Oscoda. Frequent. Th. 



