42 



NOTES ON SOUTHWESTERN PLANTS 

 By T. D. A. Cockerf.ll 



Peritoma serrulatum albiflorum. Flowers pure white. 

 (Cleome serrulaia f. albiflora Ckll. Proc. Acad. Nat. Sci. Phila. 

 1896: 34; misprinted C. albiflora). This white-flowered form 

 occurs occasionally in Colorado and northern New Mexico, along 

 with the type ; but for many miles westward of Peach Springs, 

 Arizona, along the railroad, it constitutes a local race, to the ex- 

 clusion of the type. At Williams. Arizona, on the other hand, 

 the plants are all of the typical form. 



Fallugia micrantha Ckll. Entom. News, 1901 : 41. This 

 northern form was briefly described in the place cited, where an 

 account is given of its insect visitors. It is readily known by its 

 small flowers, 23—26 mm. diameter. At Las Vegas Hot Springs 

 (7,000 ft.) it reaches its greatest altitudinal limit, and is com- 

 pletely dioecious, which is not the case at Mesilla Park. 



Lupinus Helleri Greene, Pittonia, 4 : 1 34. Santa Fe, N. M. 

 This name may be objected to on account of the prior L. Hellerae 

 Heller, though I do not consider the names identical. However, 

 it appears to me that L. Helleri is L. decumbens argophyllus, A. 

 Gray (PI. Fendl. 37. I 849)> so its proper name will be Lupinus 

 argophyllus. The type locality of argophyllus is " around Santa 

 Fe," where, in fact, it is abundant. 



Carchtus ochrocentrus forma albiflora, flowers white. This is 

 quite common in the region just north of Las Vegas, N. M., 

 growing with the type. I record it because Britton (Man. Flora 

 N. E. States, 1032) says " flowers purple (rarely white ?)." The 

 plant which grows around Las Vegas and Santa Fe is the real 

 C. ochrocentrus ; the common plant of Colorado is somewhat 

 different, and may have to be separated. 



Kallstrocmia brachystylis Vail. Common at Raton, N. M., 

 which is only just south of the Colorado border. This extends 

 its range considerably northward. 



Leucampyx Newberryi A. Gray. On Crews' Mesa, near 

 Bculah, N. M., I found a plant with some flowers having pale 



