beneath. Flowers in compound cymes. Fruit berry-like, 

 nearly globular, dark red or purple.^Swam-ps. 



Var. melanoear'pa, Hook., is nearly smooth throughout, 

 and has large black fruit. — Swamps. ^ 



8. P. Ameriea'na, DC. (American Mountain- Ash.) A 

 small tree with odd-pinnate leaves of 13-15 leaflets, the latter 

 lanceolate, taper-pointed, sharply serrate, bright green. 

 Fruit scarlet, berry-like, not larger than peas. Flowers in 

 flat cymes. — Swamps and cool woods, northward. 



4. P. sambucifo'lia, Cham, and Sohleeht., differs from 

 the last in having oblong, oval or lanoe-ovate, obtuse leaf- 

 lets, smaller cymes, and larger flowers and berries. ^N.W. 



17. AMiaAN'CHIEU, Medic. June-bekkt. Saskatoon-beury. 



1. A. Canadensis, Torr. aud Gray. (Shadbush. Sebvicb- 

 BEKRY.) A tree 10-30 feet high, with a purplish, berr3r-like 

 edible fruit. Leaves ovate to ovate-oblong, slightly cordate, 

 pointed, very sharply serrate, nearly or soon glabrous. 

 Bracts and stipules silky-cilia te. Flowers large, in drooping 

 nearly glabrous racemes. Petals oblong. Pedicels of the 

 berries long. — Open woodlands. 



Var. rotundifolia, Torr. and Gray, has broader leaves. 



Var. oblongifolia, Torr. and Gray, is a small tree (6-iO 

 feet), with the young leaves and racemes densely white- 

 tomentose. Leaves broader and generally rounded at the 

 base. Fl()wers in shorter and denser racemes, and pedicels 

 of the fruit shorter. Petals pblong - spathulate. — Low 

 grounds. 



2. A. oligoearp'a, Eaem. A shrub 2-4 feet high. Leaves 

 thin, oblong, acute at both ends. Petals obloug-obovate. 

 Fruit dark purple with a dense bloom. — Cold swamps. 



3. A. alnifolia, Nutt. A shrub 3-8 feet high. Leaves 

 mostly broadly elliptical and obtuse, coarsely toothed to- 

 wards the apex. Kaoeme short and rather dens'e. Petals 

 wedge-shaped-oblong. — N. W. prairies. 



