68 MICHIGAN ACADEMY OP SCIENCE. 



771. P. heterophylla L. Swamp or Downy Poplar. Cass Co., J. H. Roy. 

 *772. P. tremuloides Michx. American Aspen. Woods and lake shores; most abun- 

 dant in U. P., Whitney. Common. Th. 



SALIX L. 



773. S. adenophylla Hook. Tomentose Willow. Beach sand, Lake Michigan, and 

 northward. Petoskey; St. Jo., Dr. Wright in Torr. Herb., Bebb. Hooker's original speci- 

 mens came from Labrador. 



*774. S. alba vitellina (L.) Koch. Golden Willow. Naturalized from Europe. 



*755. S. amygdaloides Anders. Peadi-leaved Willow. Flint, Dr. D. Clark; Hub- 

 bardston; Harrisville; Detroit, O. A. Farwell. Th. 



776. S. balsamifera (Hook.) Barratt. Balsam Willow. Flint, Dr. D. Clark; Kewee- 

 naw Co., O. A. Farwell; near Port Huron, C. K. Dodge. 



777. S. balsamifera lanceolata Bebb. Keweenaw Co., O. A. Farwell. 



778. S. balsamifera vegeta Bebb. Keweenaw Co., O. A. Farwell. 



*779. S. Bebbiana Sarg. Bebbs' Willow. 8. rostrata Richardson. Moist or dry 

 ground. Common. Th. 



779a. S. Babbiana x petiolaris No. 37 Bebb. Herb. Salicum. Flint, Dr. D. Clark. 

 *780. S. Candida Fluegge. Hoary Willow. Usually in tamarack swamps. Rare in 

 S. part of the State. Common northward. Alma, Ann Arbor, C. A. Davis. Th. 



781. S. Candida x cordata Bebb. Flint, Dr. D. Clark; Hubbardston, C. F. Wheeler. 

 *782. S. cordata Muhl. Heart-leaved Willow. Along streams. Narrow-leaved forms 

 occur in the central and southern 'parts of the State; at Petoskey, broadly ovate-heart- 

 shaped leaved forms occur. Common. Th. 



783. S. cordata angustata (Pursh.) Anders. Ypsilanti, Detroit, 0. A. Farwell. 

 *784. S. cordata x sericea Bebb. L. H. Bailey; Flint, Dr. D. Clark. 

 *785. S. discolor Muhl. Glaucous Willow. River banks. Common. 



786. S. eriocephala Michx. Keweenaw Co., 0. A. Farwell. 8. discolor eriocepJiala 

 Anders. 



789. S. fragilis L. Brittle Willow. Planted in cities and villages. Birmingham, S. 

 Alexander. 



*790. S. fragilis x alba Wimmer. Coleman's Catalogue; Palmer's Cat. 

 *791. S. glaucophylla Bebb. Broad-leaved Willow. Hubbardston; Petoskey, frequent 

 along the shores of Little Traverse Bay, and shores of the Great Lakes. Rare in the 

 interior. Th. 



792. S. glaucophylla angustifolia Bebb. Sturgeon Point, Alcona Co. 



793. S. glaucophylla brevifolia Bebb. Shores of Little Traverse Bay, C. F. Wheeler. 

 *794. S. humilis Marshall. Prairie Willow. Common northward to Marquette Co., 



Burt MS. Cat. A very broad-leaved form with the young leaves round obovate to 

 nearly round, collected by O. A. Farwell, Keweenaw Co.; Ann Arbor, C. A. Davis. 

 *795. S. humilis x discolor Bebb. Keweenaw Co., O. A. Farwell. 

 795a. S. interior Rowlee. Wet places. Common. Th. 



796. S. interior Wheeleri Rowlee. Bay Co., G. M. Bradford; Belle Isle, O. A. Far- 

 well. 



*797. S. lucida Muhl. Shining Willow. Along streams. Variable. Common. Th. 

 *798. S. myrtilloides L. Myrtle Willow. Sphagnous swamps. S. E., Winch. Cat.; 

 Ionia to L. Superior. Frequent. Th. 



799. S. myrtilloides pedicellaris Anders. Keweenaw Co., 0. A. Farwell. 

 *800. S. nigra Marshall. Black Willow. Along streams; a small tree. Th. 

 801. S. nigra falcata (Pursh.) Torr. Bay City and vicinity, G v M. Bradford. 

 *802. S. petiolaris J. L. Smith. Petioled" Willow. With the last. From Sault de 

 Ste. Marie southward. Ionia Co. Frequent. Th. 



803. S. petiolaris gracilis Anders. Slender Willow. S. western part of the State. 



804. S. petiolaris x Candida Bebb. Herb Salicum, No. 30. Originally from Has- 

 call's swamp, nea,r Flint, Mich., where it was discovered by Daniel Clarke, M. D., in 

 1872 the locality being soon after obliterated. Should it be deemed advisable here- 

 after to treat supposed hybrids as quasi-species, after the manner of Anderson, Kerner 

 and others, I very much wish that this beautiful willow should be called S. Clarkei, 

 to commemorate the name of a botanist who has done more than any other to give 

 an impetus to the study of hybrid willows in this country, M. S. Bebb, 1880. Swamp 

 near Hubbardston, Ionia Co., C. F. Wheeler. 



*805. S. proinoides Pursh. 8. discolor prinoides (Pursh.) Anders. Common. 



*806. S. sericea Marshall. Silky-Willow. Drummond's Is., Winch. Cat.; Ionia Co., 

 and southward to S. Haven, L. H. Bailey; shore of Black Lake, Cheboygan Co. Very 

 common in central part of the State; Alma, Ann Arbor, C. A. Davis. 



