26 Contributions from the Gray Herbarium 
southwestern Texas and northern Mexico must show the inadvisa- 
bility of regarding the New Mexican material as representing a 
distinct species because collections exist which are so intermediate 
in character between it and the typical state that they directly 
connect the two. However the western plants are in general easily 
distinguished and therefore I propose for them the above varietal 
eo aataee 
a Anelsonii, spec. nov. +, annua erecta birt medio- 
criter rohan glanduloso-viseida circa 3 dm. alta; foliis late oblon- 
gis valde sinuato-crenatis vel subpinnatifidis raro lyratis ‘obis 
crenulatis circa 6 cm. longis 1-2 ¢ ‘cake viridibus sed parce glan- 
duloso-viscidis; racemis Raniodiakis laxiusculis; calycis lobis late 
ovatis obtusis glanduloso-hirsutis ei rea 4 mm. ’Jongis fere 2 mm. 
s. — : 
Wash, April 28, 1902, Goodding, no. 635 (Typr, R. Mt. Herb.). 
This is the plant which Goodding, when he described his P. 
foetida, Bot. Gaz. xxxvii. 58 (1904), took to represent P. Palmert 
Wats., a very different plant with exserted stamens and corrugated 
seeds. P. Anelsonii resembles P. crenulata Torr. in leaves, P. 
integrifolia Torr. in habit and seeds. It is unique, however, among 
species of this alliance in the included stamens. In this one char- 
acter it suggests the obviously distinct P. coerulea Greene and P. 
invenusta Gray, species with corrugated seeds and very different 
aspect. Aven Nelson has been the sponsor of many trips for 
botanical exploration one of which may be appropriately commem- 
orated ia scene to him this distinctive et 
oribus. — Cau 
April, 1901, ‘Blanche Trask (Type, Foto Her 
This plant is a rather remarkable addition to the group of char- 
acteristic species which include P. distans and P. ramosissima. 
The cinereous pubescence of P. cinerea is distinctive but the foliage 
and flowers (especially the nature of the corolla-appendages) 
simulate closely P. distans. The latter plant, however, is consis- 
