ILLUSTRATIONS. 



Plate 1. a. Pulsatilla patens (Pasque flower). 6. Typha latifolia 64 



lA. a. Sagittaria latifolia. 6. A sluggish stream growing full of arrow- 

 leaf (Sagittaria latifolia) 64 



2. a. A mass of Stipaspartea bent under the wind. In the background 



can be seen a number of plants of Echinacea angiistifolia in 

 bloom, b. Bunch of Sti pa spartea; bunch of long-awned seeds 

 of Stipa spartea; a hairbrush made from awns of 8tipa spartea. 66 



3. a. Zizania aquatica (wild rice). Herbarium specimen of straw, a 



few grains not hidled, and a handful of hulled grains as pre- 

 pared for food. b. Zizania aquatica, habit 66 



4. a. Arisaema triphyllum. 6. Habit picture of Arisaema tripliyllum. 



Panax trifolium may also be seen 70 



5. a. Tradescantia \-irginica (spiderwort). 6. A circle of cottonwood- 



leaf toy tipis as made by Indian children of Plainstribes 70 



6. a. Erythronium mesochoreum, entire plant, bulbs, and flowers. 



b. Erythronium mesochoreum, habit of growth on the prairie. . 70 



7. a. Yucca glauca in bloom, b. Yucca glauca in fruit 70 



8. a. A bundle of yucca leaves bound up to demonstrate use as drill 



in fire making. 6. A piece of yucca stem prepared to demon- 

 strate use aa hearth piece in fire making, c. Adry yuccajjlant. 70 



9. Iris versicolor 72 



10. n. Tubers and fruit of Nelumbo lutea. b. Nelumbo lutea, hahil 80 



11. a. Thalictrum dioicum (early meadow rue), b. Aquilegia cana- 



densis 80 



12. a. Sanguinaria canadensis, detail, b. Sanguinaria canadensis, 



habit '. 84 



13. a. Wildstrawberry native to wild meadows of Nebraska, b. Woman 



of the Teton Dakota pounding chokecherries (Padus nielano- 

 carpa) to dry for winter supply 84 



14. a. Foliage and fruit of Prunus bessejd (sand cherry). 6. Branch of 



Prunus besseyi showing prolificness of this fruit 88 



15. Herbarium specimen of Psoralea esculenta (tipsin) 92 



IG. A string of roots of Psoralea esculenta (tipsin) peeled and dried 



to preserve for winter supply 92 



17. a. Vine of Glycine apios (Apios tuberosa). 6. Tubers of glycine 



apios (Apios tuberosa) 94 



18. a. Specimen of Falcata comosa showing leafy branches witli i>iid8 



and small beans i)roduced thereon from the petaliferous flowers. 

 b. Leafless branches which grow prostrate on ground surface 

 and four large beans produced underground from the deislo- 

 gamous flowers of these leafless branches 94 



19. a. Clusters of fruits of Rhus glabra. 6. Cordage made from inner 



bark of Tilia americana (basswood) ; a bundle of raw fiber and 



a piece of cord made by hand from the fiber 100 



74936°— 19— 33 kth i 49 



