280 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



c'. Leaves nearly or quite glabrous from the first, ovate, oval or ellipti- 

 cal, subcordate, rounded or more rarely acute at base; apex short, 

 acuminate margin, usually sharply serrate nearly to the base, at 

 flowering time one-half to three-fourths grown and lurid-glaucous- 

 purple, rarely bright green; flowers large and showy, petals elon- 

 gated (10 to 18 mm. long) ; lower pedicels 15 to 33 mm. long, in fruit 



30 to 50 mm. long. Tree or tall shrub A. laevis. 



a'. Flowers commonly solitary (1 to 3 together). A shrub found only on 

 Greylock and on the Hoosac Plateau at its highest and most northern point. 



A. Bartramiana. 



A. Bartramiana (Tausch.) Roem. — (A. oUgocarpa Man. ed. 7; 

 vid. Rhodora, 14: 158, 1912.) 



Summit of Greylock and of Hoosac Mt., Florida. The only known 

 stations in Massachusetts. 



A. canadensis (L.) Medic. — (A. canadensis, var. Botryapium Man. 

 ed. 7; vid. Rhodora, 14: 150, 1912. A. intermedia 111. Fl. ed. 2.) 



Dry woods; common. 



A. intermedia Spach. (?) — An Amelanchier collected in 1920 in 

 an open bog at Ward Pond, Becket, was sent to Professor Wiegand, 

 who writes, " This specimen resembles A. intermedia Spach but is not 

 quite like our Ithaca plants. I have seen A. intermedia in New Eng- 

 land only from the bog at Rutland, Vt." 



A. intermedia is a tall shrub, rarely a small tree, widely branching 

 near the ground or at first growing in clumps : leaves elliptic-oblong or 

 elliptic-obovate on the shoots; base rounded; apex acute; margin 

 finely but somewhat distantly serrate; veins irregular; surface moder- 

 ately tomentose when young, slightly so at maturity on the veins 

 beneath and on the petiole; young leaves often reddish; racemes short 

 (2 to 4 cm. long) 5- to 8- flowered, sparingly hairy; lower pedicels 8 to 

 14 mm. long; sepals short (2 to 3 mm. long), hairy on the inner face; 

 petals short (7 to 8 mm. long), oblong-cuneate; fruit dark purple, 

 juicy; fruiting racemes short, subcorymbose. The species grows in 

 boggy soil, and should be looked for in bogs in Berkshire. Vid. 

 Rhodora, 22: 146 (1920). 



A. laevis Wiegand. — {A. canadensis Man. ed. 7; vid. Rhodora, 14: 

 154, 1912.) 



Open woods, roadside thickets and banks of streams ; common. 



A. sanguinea (Pursh) DC. — {A. spicataMan. ed. 7; vid. Rhodora, 

 14: 138, 1912.) 



Rocky summits of some of the Taconics. Williamstown (Burnham) ; 



