LIST OF THE PLANTS COLLECTED 33 



4. EOUISETACEAE (Horsetail Family) 



8. Equisetum ari'ense L. 



Locally abundant in moist wooded gulches, Cave Hills. 

 Common along Little Missouri River near Willett. 



9. Equisctum laez'-igatum A. Br. ffl 



Tolerably common on flood plains, and valley of buttes. 



10. Eqiiisetum robnstnm A. Br. 



Rare on springy ground, East Short Pine Hills. 



5. SELAGIXELLACEAE 

 *ii. Selaginella dcnsa Rydb. Resurrection Plant. 



Very abundant locally on the dry soil of the plains. 



6. PIXACEAE (Pine Family) 



12. Juniperus coinmitnis Sibcrica (Burgsd) Rydb. Creeping 

 Juniper. 



Abundant, especially in the shady woods. Frequent on the 



exposed surfaces of the tables. 

 *I3. Juniperus sabina L. 



Very abundant on high grassy slopes especially on the sides 



of the buttes. 



14. Juniperus scopulorum Sarg. Red Cedar. 



Forms extensive "Cedar brakes" along the Little Missouri 

 River near the X. D. line, and occurs sparingly in the Slim 

 buttes and somewhat abundantly in the E. Short Pines. Cedar 

 apples (gymuosporanguin Xclsomi. Arth.) is common. 



15. Finns scopulorum Sarg. Western Yellow or Bull Pine. 



Abundant. on the higher slopes of the forested buttes. Attain 

 the diameter of three feet. Saw mills have been located in 

 each of the buttes. 



AXGIOSPERMS 



7. Typhaceae (Cattail Family) 



16. Typha latifolia L. 



Abundant about artificial ponds, and marshes caused by 

 slumping in the forest reserves. 



8. XAIADACEAE (Pondweed Family) 



17. Potamogeton Sp. Pondweed. 



Abundant, submerged, in some of the ponds of the creeks. 

 Sig. 3. 



