128 ROSALES 
2. Amelanchier botryapium (L. f.) D. C. Shad-Bush. 
Along streams mostly along the Niobrara and upper Missouri. Grand 
Island; Johnston; Long Pine; Ft. Niobrara; Ft. Robinson; Valentine. 
3. Amelanchier alnifolia Nutt. Western June-Berry. 
Dry soil in the northwestern part of the state. Banner County; Bel- 
mont; Merriman; Simeon; Sioux County; Valentine. 
14. Prunus. 523. 
Flowers in small few-flowered umbels, appearing with or before the 
leaves. 
Thorny shrub or small tree, over 1 m. high, fruit red or yellow. 
1. P. americana. 
Thornless shrub 2-5 dm; high, fruit black. 2. P. besseyi. 
Flowers in many-flowered racemes at the ends of leafy branches of 
the season. 
Shrubs or small trees, leaves with spreading teeth. 
Fruit very astringent, red to nearly black, 8-10 mm. in diameter; 
eastern. 3 .P. virginiana. 
Fruits sweet or but slightly astringent, dark-purple to black, 6-8 
mm. in diameter; northwestern. 4. P. melanocarpa. 
Large trees, leaved with incurved teeth; southeastern. 
5. P. serotina. 
1. Prunus americana Marsh. Wild Plum. 
Common all over the state. Dismal River; Lancaster; Peru; Thed- 
ford; Valentine; Wahoo. 
2. Prunus besseyi Bailey. Sand Cherry. 
Common in sandy soil in the northern and western parts of the 
state. Antelope County; Banner County; Cherry County; Deuel 
County; Hat Creek Basin; Pierce; Sheridan County; Thedford; Wei- 
gand. 
3. Prunus virginiana L. Choke-Cherry. 
Along streams in the southeastern part of the state. Crete; Lancas- 
ter County; Peru. 
4, Prunus melanocarpa (A. Nels.) Rydb. Western Choke-Cherry. 
Prusus demissa (Nutt.) Walp. 
In prairies and dry soil throughout the northern and western parts 
of the state . Belmont; Hastings; Long Pine; Thedford; Valentine; 
Wahoo. 
5. Prunus serotina Ebrh. Wild Black Cherry. 
Rare in woods in the southeastern part of the state. Nemaha; Peru; 
Weeping Water. 
2. LEGUMINOSAE. 
2a. Subfamily CAESALPINACEAE. 
Leaves once or twice pinnate. 
Trees; leaves twice-pinnate. 
Thorniess trees, leaflets 5-7 cm. long. 3. Gymnocladus. 
Usually thorny, leaflets 1-3 cm. long. 2. Gleditsia. 
Our species herbs, leaves simply pinnate. 1. Cassia. 
Leaves simple, heart-shaped. 4. Cercis. 
