Ptrus. rosacea. 225 



long, pubescent when young, but smooth in the adult stale. Flowers white, the corymbs very 

 compound, 4-10 inches in diameter. Styles usually 3. Fruit acid, bright red or scarlet 

 when mature. 



Mountain sides, and in swamps ; not found south of the Highlands. The largest trees of 

 tliis species that I have ever seen, are on tlie high mountains of Essex county. Fl. Latter 

 part of May - June. Fr. September. The handsome red fruit is persistent through the 

 winter. The Mmmtain Ash of this country, or American Service-tree as it is sometimes 

 called, is nearly allied to the S. aucuparia of Europe, and is by many botanists considered 

 as a variety of that species. 



18. AMELANCHIER. Medic; Lindl. in Linn, trcms. 13. p. 100. june-berry. 



[Amclancier, according to Clusius, is the Savoy name for A. vulgaris. Loddon.] 



Calyx 5-cleft. Petals ovate-oblong or oblanceolate. Stamens short. Styles 5, more or less 

 united. Pome 3 - 5-celled ; each cell imperfectly divided by a false longitudinal dissepi- 

 ment, with a single seed in each division : endocarp cartilaginous. — Small trees or shrubs, 

 with simple serrated leaves and racemose white flowers. 



1. Amelanchier Canadensis, Torr. S^- Gr. Common June-herry. Shad-Jtower. 



Leaves ovate, elliptical or oblong, more or less cordate at the base, often acuminate, very 

 woolly when young, smooth when mature ; segments of the calyx triangular-lanceolate, about 

 the length of the tube; fruit purplish. — Torr. <^ Gr. fl. N. Am. 1. p. 473. Mespilus Cana- 

 densis, Linn. sp. 1. p,A78 (excl. syn. Gron.) ; Michx. fl. 1. p. 291. Pyrus Botryapium, 

 Linn. f. suppl. p. 255. 



var. 1. Botryapium: arborescent ; leaves ovate-oblong, mostly somewhat cordate, acuminate 

 and cuspidate ; petals oblong, four times tlie length of the calyx. Torr. <^ Gr. I. c. Mespilus 

 Canadensis, var. cordata, Michx. I. c. M. arborea, Michx. f. sylv. \.p. 336. t. 66. Pyrus 

 Botryapium, Willd. sp. 2. p. 1013 ; Pursh,fl. I, p. 339. Crataegus racemosa, Lam. diet. 1, 

 p. 74. Aronia Botryapium, Pers. syn. 2. p. 39 ; Ell. sk. 1. p. 357. Amelanchier Botry- 

 apium, DC. prodr. 2. p. 632 ; Beck, lot. p. 112; Darlingt.fl. Cest. j}. 294. A. Botryapium 

 and ovalis, Hook. fl. Bor:-Am. 1. p. 202. 



var. 2^oblongifolia : shrubby; leaves oval-oblong, mucronatc, the tomenliim of the lower 

 surface often remaining during the flowering ; racemes shorter ; petals obovatc-oblong, about 

 thrice the length of the calyx. Torr. 6f Gr. I.e. A. ovalis, Hook. I, c. Mespilus ovalis, 

 var. obovalis, Miclix. I. c.l Aronia Botryapium, Torr. fl. 1. p. 479. 



var. 3. rotundifulia : shrubby or arborescent ; leaves roundish-oval, often somewhat acumi- 

 nate or cuspidate ; racemes 6 - lO-flowered ; petals narrowly oblong, rather small. Torr. 

 <y Gr. I. c. A, ovalis, DC. I. c. ; Darlmgt. I. c. ? Mespilus Canadensis, var. rotundifoiia, 

 Miclus. I. c. Pyrus ovaHs, Willd. I. c. P. sanguinca, Pursk, I. e, Aronia ovalis, Pers. I. c. 

 [Flora.] 29 



