144 Order ROSALES 
Callaway; Chadron; Fairbury; Ft. Robinson; Hastings; Lincoln; 
Neligh. 
17. Glycyrrhiza. 557. 
1. Glycyrrhiza lepidota Pursh. Wild Licorice. 
Common on the prairies all over the state. Cherry county; Hooker 
county; Lancaster county; Newcastle; Sioux county; Thedford; Val- 
entine. 
18. Psoralea. 542. 
Leaves mostly 5-foliolate, some of the upper sometimes 3-foliolate; 
flowers mostly 1 cm. or more long. 
Petioles much longer than the leaflets, the lower 2—4 times as long. 
Stems 1-4 dm. high, spikes 3.5-8 cm. long. 1. P. esculenta. 
Stems hardly rising above the ground, spikes not over 2.5 cm. 
long. 2. P. hypogeza. 
Petioles little if any longer than the leaflets. 
Flowers in loose spikes, 3-4 mm. long. 4. P. digitata. 
Flowers sessile in dense heads, stipules 5-15 mm. long. 
Calyx lobes nearly equal, all much shorter than the corolla. 
3. P. cuspidata. 
Calyx lobes very unequal, the lower 1 cm. long, longer than 
the corolla. 5. P. argophylla. 
Leaves mostly 3-foliolate, the lower sometimes 5-foliolate; flower 4-9 
mm. long. 
Peduncles longer than the leaves, mostly several times as long. 
Leaflets not linear. 
Flowers sessile on the peduncles. 6. P. collina. 
Flowers stalked on the peduncles. 
Flowers few, 1-2 to each bract, 4-5 mm. long. 
7. P. tenuiflora. 
Flowers many, 2-3 to each bract, 5-7 mm. long. 
8. P. floribunda. 
Leaflets linear, 2-4 mm. wide. 9. P. linearifolia. 
Peduncles about as long as the leaves; spikes few-flowered. 
10. P. lanceolata. 
1. Psoralea esculenta Pursh. Prairie Potato or Bread-root. 
In high prairies throughout the state. Atkinson; Beatrice; Fair- 
bury; Gordon; Holdrege; Ponca; Red Cloud; Sheridan county; Sioux 
county; Thedford; Valentine. 
2. Psoralea hypogea Nutt. 
Rare in the western part of the state. Alliance; Deuel county. 
3. Psoralea cuspidata Pursh. 
On dry bluffs and prairies, probably throughout the wetted part of 
the state. Dakota Junction; Grand Rapids; Valentine. 
4. Psoralea digitata Nutt. 
Common on prairies in the sand-hill regions. Anselmo; Grand 
Island; Kearney; Long Pine; Norway; Phelps county; Sargent; 
Sheridan county; Weigand. 
5. Psoralea argophylla Pursh. 
Common on prairies throughout the state. Belmont; Box Butte 
county; Haigler; Lincoln; St. James; Sioux county; Thedford; Wahoo. 
