ASCLEPIADACEAE 109 
7. Asclepias syriaca L. Common Milkweed. 
A common weed in fields and prairies all over the state. Ainsworth; 
Anselmo; Crete; Lincoln; Peru; St. Paul; Tecumseh; Weeping Water; 
Wymore. 
8. Asclepias speciosa Torr. Showy Milkweed. 
Fairly common in prairies especially in the western part of the state. 
Callaway; Deuel County; Holdrege; Lincoln; Simeon. 
9. Asclepias arenaria Torr. 
Common in dry soil in the sand-hills and foot-hills. Cheyenne County; 
Long Pine; Minden; Plummer Ford; Riverton; Valentine. 
10. Asclepias ovalifolia Dec, 
Reported from Weeping Water. 
11. Asclepias verticillata L. 
Common in dry prairies all over the state. Brock; Cherry County; 
Fairbury; Indianola; Laurel; Lincoln; Niobrara; O’Neill. 
12. Asclepias pumila (A. Gray.) Vail. 
Common in dry prairies, most abundant in the western part of the 
state. Anselmo; Belmont; Box Butte County; Haigler; Kearney; Mc- 
Cook; Ponca River; Ft. Niobrara; Thedford. 
2. Asclepiadora. 745, “ 
1. Asclepiadora viridis (Walt.) A, Gray. 
In the southwestern part of the state, along the Republican River. 
Red Cloud. . 
3. Acerates. 745, 
Glabrous or puberulent, umbels usually several. 
Umbels sessile or subsessile. 
Hoods entire at the apex. 
Leaves oval, oblong or ovate, over 1 cm. wide. 
1. A, viridiflora. 
Leaves lanceolate or linear, less than 1 cm. wide. 
Leaves lanceolate, %-2 cm. wide, ta. A. vir.ivesii. 
Leaves linear, stem low, umbel often solitary. 
1b. A. vir-linearis. 
Hoods 3-toothed at the apex. 2. A, angustifolia. 
Umbels distinctly peduncled. 
Stems puberulent, leaves 3-13 mm. wide. 3. A. floridana. 
Stems glabrous,. leaves 1-5 mm. wide. 4, A, auriculata. 
Hirsute all over; umbel terminal, solitary. 5. A. lanuginosa. 
1. Acerates viridiflora (Raf.) aton. 
Common in dry prairies throughout the state. Banner County; Broken 
Bow; Deuel County; Lincoln; St. James; Crete; Saunders County; 
Valentine. 
1a. Acerates viridiflora invesii Britton. 
Acerates viridiflora lanceolata (Ives.) Gray. 
Common throughout the state. Cushman; Lincoln; Norway; Plummer 
Ford; St. James; Wahoo. 
1b. Acerates viridiflora linearis A. Gray. 
Cherry County; Norway; St. James, 
