THE AMERICAN BOTANIST 51 



20. Rubiis strigosus Michx. The only Rubiis found. If 

 this is R. strigosus it has sadly degenerated in the western part 

 of its range. Berries insipid. 



21. Stellaria Jamesiana Torr. Summit of Navajo. 



23. Briogonum cognatimi Greene. Slopes of Navajo. 



24. PJiiladelphus occidentalis A. Nels. This PJiiladel- 

 pJiiis was so floriferous and so fragrant that it could be smelled 

 for a considerable distance. Seldom found except on slides. 

 Shrub has a grayish appearance. Slopes of Navajo. 



25. Pcntstcuwn strictus Benth. Abundant everywhere. 

 Saw it at Grand Canyon, at Flagstaff, and all over Navajo. 



26. Lychnis Drummondii Wats. Near War God spring. 



27. Acer glabritni Torr. var. tripartitum. Growing 

 about the edges; of cliffs and rock slides. Hidden Spring. 



28. Purshia tridentata DC. Plentiful among the cedars 

 and pines at Endische Spring and found nearly to the summit. 

 Easily confused with Cozvania which is abundant at Grand 

 Canyon. ' 



29. Geranium caespitosum gracile {Eng.) A. Nels. A 

 fine little geranium with pinkish flowers. Aspen Springs. 



30. Holodiscus dumosus (Nutt.) Heller. This shrub 

 is worth cultivating. Its very abundant panicles of light buff 

 flowers made it quite conspicuous. 



31. Fritillaria atropurpurea Nutt. Very common half 

 way up the mountain in park-like spaces and fond of growing 

 in mats of Ceanotlius. 



32. Ceanotlius Fendlcri Gray. Thorny, forming dense 

 mats. Difficult to walk through but providing a springy bed, 

 if covered sufficiently. 



33. Briogonum racemosum Nutt. Slopes of Navajo. 



34. Briogonum alatum Torr. The tallest Briogonum 

 we encountered. Leaves forming a rosette. < 



