46 '1 HE AMERICAN BOTANIST 



school at Moenkopi. It is one of the most abundant plants on 

 the plains and is often called chamiso and sage-brush. It is 

 not, however, the plant usually designated as sage-brush. 5. 



Amaranthiis blitoidcs S. Wats. Spreading pig-wued. 

 This common weed was abundant iri the gardens at Tuba. 



Trypterocalyx cyclopterus (A. Gray) Sand X^erbena. 

 In waste ground. After flowering the fruits develop broad 

 wings which make the plant very conspicuous. 95. 



Portulaca olcracca L. Purseaxe. \^ery common. This 

 plant is occasionally eaten as a pot-herb, but I could not dis- 

 cover that the Indians made use oi it though their food plants 

 are very limited as to variety. 



Clematis licjitsticifolia Nutt. Virgin's bower. This is the 

 western analogue of C.Virginiana. It climbs over the vegeta- 

 tion in many places and is especially luxuriant at Reservoir 

 Canyon. It thrives in cultivation, and its thicker, darker fol- 

 iage makes it rather superior to the common form for such 

 purposes. 86. 



BatracJiiimi tricophylliun (Chaix). White water-Crow- 

 FooT. A few specimens were found in a reservoir at Tuba, 

 probably carried thither on the plumage of water birds. 130. 



Halerpestis cymhalaria (Pursh) Sea-side Crowkoot. The 

 common name of this buttercup is scarcely appropriate for a 

 species that is abundantly distributed over the desert. Found 

 in many moist spots and ver}- plentiful in Moenkopi Wash. 98. 



PleiiropJiragma platypodwii Rydb. In dry ground not far 

 from streams. The plants put up flowering shoots, often six 

 feet high, from a tuberous root. The rosette of leaves has usu- 

 ally perished by the time the flowers. open. 82. 



Sisyinbriuni iiastiirtiitin - -aqtiaticinii L. Water-crESS. 

 Abundant in many rills with all the appearance of a native. 

 It may have been introduced, but this is not likely. 107. 



