102 Order PRIMULALES 
5. Parietaria. 343. 
1. Parietaria pennsylvanica Muhl. Pellitory. 
In dry woods and thickets throughout the state. Belmont; Calla- 
way; Long Pine; Lincoln; Red Cloud; Valentine; Weeping Water. 
Subclass HETEROMERAE. 
PRIMULALES. 
Sepals and corolla lobes usually 5 or more, corolla normal; capsule 
circumscissile only in Anagallis and Centunculus, 1. Primulacez. 
Sepals and corolla lobes 4, corolla scarious; capsule circumscissile. 
2. Plantaginacee. 
1. PRIMULACE. 
Primrose Family. 
Corolla not refliexed. 
Capsule not circumscissile. 
Scapose plants, with white or pink flowers. 1. Androsace. 
Leafy-stemmed plants, with yellow flowers. 
Flowers solitary in the axils. 2. Steironema. 
Flowers in axillary spike-like racemes or heads. 3. Naumbergia. 
Capsule circumscissile. 
Flowers on peduncles over 1 cm. long. 4. Anagallis. 
Flowers sessile or nearly so. . Centunculus. 
Corolla reflexed. Dodecatheon. 
DP on 
1. Androsace. 714. 
1. Androsace occidentalis Pursh. 
In dry soil throughout the state. Crete; Fairbury; Franklin; Lin- 
coln; Nebraska City; Red Cloud; Valentine; Wahoo. 
2. Steironema. 716. 
Leaves ovate to ovate-lanceolate, on long ciliate petioles. 
1. S. ciliatum. 
Leaves linear, sessile or nearly so. 2. S. quadriflorum. 
1. Steironema ciliatum (L.) Raf. Loosestrife. 
Common in low prairies and meadows throughout the state; often 
found in the edges of thickets, in ditches and along streams. An- 
selmo; Aten; Cherry county; Kearney; Lincoln; Minden; Sioux 
county; Talmage. 
2. Steironema quadriflorum (Sims.) Hitch. 
In the Republicna valley, not common. Franklin; Macon; Riverton. 
3. Naumbergia. 717. 
a, Naumbergia thyrsiflora (L.) Duby. Tufted Loosestrife. 
Frequent in marshes and edges of pools and streams in the sand- 
hills. Ewing; Grand Rapids; Grant county; Newark; Plainview; 
Valentine. 
4, Anagallis. 718. 
1. Anagallis arvensis L. Scarlet Pimpernel. 
Lincoln. 
