384 MALACEAE 



5. Amelanchier Medic* 



Low shrub; petals 4-8 ram. long. 1. A. spicata. 



Trees, when mature; petals usually 10-16 mm. long. 

 Flowers racemose. 



Top of the ovary smooth or nearly so. 



Young leaves and inflorescence smooth or slightly 



hairy; leaves mostly cordate at base. 2. A. canadensis. 



Young leaves and inflorescence white wooly; leaves 

 rarely sub-cordate. 

 Petals 10-14 mm - long- 3- A. intermedia. 



Petals 3-4 mm. long or less. 4. A. nantucketensis. 



Top of ovary wooly; leaves rounded. 5. A. sanguinea. 



Flowers solitary or 1-3, not racemose. 6. A. Barlramiana. 



i. A. spicata (Lam.) Dec. {A. stolonifera Wiegand). On dry 

 rocks: Ont. to Mich, and N. Car. 



Conn. Reported from several stations. 



N. Y. Highlands of the Hudson; Sam's Point, Ulster Co.; In- 

 wood, N. Y. City 

 N. J. Bergen, Passaic and Sussex counties. 

 Pa. Monroe, Northampton and Bucks counties. 

 Most common on limestone. 



2. A. canadensis (L.) Medic. (A. Botryapium (L.f.) DC. ; A. laevis 



Wiegand?). In woods: N. B. to Man., Fla. and La. 



Throughout the range, except the coastal plain of N. J., com- 

 moner inland than near the coast. 



3. A. intermedia Spach. (A. oblongifolia (T. & G.) Roemer). In 



moist soil: N. B. to Man., south to Fla. and La. 

 Common throughout especially on the coastal plain. 



4. A. nantucketensis Bicknell. Sandy soil; E. Mass. to N. J. 



N. Y. L. I. and S. I. 



N. J. From Middlsex Co. southward. 



5. A. sanguinea (Pursh) DC. {A. rotundifolia (Michx.) Roemer). 



In woods: N. B. to N. Y. and Mich., south along the moun- 

 tains to N. Car. 



Confined as far as now known to the vicinity of Tannersville, 

 Monroe, Co., Pa., and Saw Kill, Pike Co., Pa., a region underlaid 

 by Clinton Red Shale, having a growing season of about 118 days 

 and an elevation of 2,150 ft. 



* A very complete account of Amelanchier in eastern North America appeared in 

 Rhodora 14' 117-161. 1912. Students of this genus should refer to that paper for a 

 more comprehensive study of the genus than is possible here. 



