﻿No. 5176J. May 5, Silver Reef, Utah, 3500 alt., in 

 gravel. 



Allied to L. bri-'ican/is; annual. 2-6 high, branching 

 from the base and lateral stems decumbent; whole plant 

 even to the calyx and pods sparsely long- and silky -villous, 

 or in some cases quite densely so, the hairs always spread- 

 ing and soft; petioles usually 3 to 4 times the leaflets; 

 leaflets spatulate, 8" long or less, and about 2^" wide, 

 rounded, often apiculate, about 8, not reduced above; 

 whole plant very leafy; flowers 3^" long, in short, spike- 

 like racemes, reddish-purple, subtended by short, trian- 

 gular bracts; calyx lobes lanceolate, 1^-2" long and the 

 calyx cleft nearly to the bast-, banner oval and shorter 

 than the keel: keel r 1 / wide: pods narrowly-oblong, 



about 8" long, 



2y 2 " wide 



, deeply cross- 



wrinkled betw 



een 



the seeds; seeds 3-4, n 



iearly square, 



about iy 2 " wi 



de. 



This differs frc 



im Z. brev 



icaulis in the r 



larrow pods, nr 



uch 



larger flowers, 



, in racemes instead of heads, and 



the 



caulescent ster 



ns. It se 



ems to be int< 



3rmediate betw 



een 



L. brevicaulis ; 



m&L.A* 



■izonicus. Having gathered i 



t in 



very many loca 



lities and 



finding that its 



characters rerr 



tain 



constant I do n 



:ot hesitatt 



' to separate it 



as a good spec 





This grows i 



n the Lari 



-ea belt in red 



sand and on gi 





elly slopes. 











Petalostemon 



: Jiavescen 



is Watson see 



ms to be a wl 



lite 



flowered form of P. Sec 



xrhia. I can 



see no other v; 



did 



difference. 











No. 5024J. April 5, 1894, Beaverdam, Arizona, 1800 

 alt., in drifting sand. 



This plant is found only within the Larrea belt on drift- 

 ing sand dunes, growing singly, from a deep seated, erect, 

 nearly spherical root which is fleshy and with only scat- 

 tered woody fibers within: the root is 2' or more in diam- 



