136 Order ROSALES 
2. 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, 
2 cm. or more in diameter. 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 diame- 
ter; eastern. 3. P. virginiana. 
Fruit sweet or but slightly astringent, dark-purple to black, 6-8 
mm. in diameter; leaves with two dark glands at the base; 
western. 4. P. melanocarpa. 
Large trees; leaves 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; Lan- 
caster county; Peru; Valentine; Weeping Water: 
4. Prunus melanocarpa (A. Nels.) Rydb. Western Choke-cherry. 
Prunus demissa (Nutt.) Walp. 
In prairies and dry soil throughout the northern and western parts 
a os state. Belmont; Hastings; Long Pine; Thedford; Valentine; 
ahoo. 
5. Prunus serotina Ehrh. Wild Black Cherry. 
Rare in woods in the southeastern part of the state. Nemaha; Peru; 
Weeping Waiter. 
2. LEGUMINOSA. 
Pea Family. 
2a. Subfamily CHXSALPINIACEA. 
Leaves once or twice pinnate. 
Our species herbs; leaves pinnate. 1: Cassiae 
Trees; leaves twice—pinnate. 
Usually thorny, leaflets 1-3 cm. long; flowers perfect. 2. Gleditsia. 
Thornless; leaflets 5-7 cm. long; dicecious. 3. Gymnocladus. 
Leaves simple, heart-shaped; small trees. 4. Cercis. 
1. Cassia. 529.° 
Leaflets 20-30; stipules persistent. 1. C. chamecrista. 
Leaflets 12-18; stipules caducous. 2. C. marylandica. 
