253 
the top of Long Baldy, Little Belt Mountains, and by Frank 
Tweedy, 1887, in Park County, Montana, I can easily see that P. 
viscosum Nutt. is a near relative to P. confertum Gray. It has the 
Same general habit and inflorescence. The corolla is, however, 
shorter, more open-funnelform and dark blue and the segments of 
the leaves are much smaller and rounder. The plant is very 
strong scented. 
What Dr. Gray regarded as P. viscosum, I think I know, as 
there is a specimen in the Torrey herbarium, received from Dr. 
Gray and labelled in his handwriting. This specimen agrees also 
fully with Dr. Gray’s description. It should be known under the 
name 
POLEMONIUM PARVIFOLIUM Nutt. mss. 
P. Mexicanum Nutt. Journ. Acad. Phil. 7: 41. 1834. Not 
Cerv. 
P. viscosum Gray, Proc. Am. Acad. 7: 280. Not Nutt. 
I have also examined Nuttall’s type of P. Mexicanum col- 
lected by Wyeth, on the Flathead River. It differs from Gray’s 
P. viscosum in no respect except that the calyx-lobes are a little 
longer. Nuttall himself has changed the name on the label to 
Parvifolium probably because he had found that the name P. JZexi- 
canum had been used before. ‘That Gray had seen this specimen 
can be seen from a postal card from him, pasted on the same 
sheet, dated January 6, 1880, and on this, he states that he re- 
Sarded it as being near P. pumilum var. pulchellum, and adds: “ If I 
had to do it over, I would add a var. parvifolium to it.” As P. 
Mexicanum and P. parvifolium are both based on the same speci- 
mens it is strange to find that Dr. Gray in 1886,* makes the fol- — 
lowing remark under P. foliosissimum. “To this probably belongs 
P. Mexicanum Nutt. Journ. Acad. Philad. 7 : 41, from the northern 
Rocky Mountains.” It is evident that the Nuttallian specimens oe 
of P. Mexicanum both in the Philadelphia and the Torrey herbaria 
belong to the same species as Gray’s P. viscosum, which is a very 
near relative of P. pulchellum, at least as that species is under- 
stood in America, differing mainly in the smaller flowers. Flod- 
man, Spanish Basin, nos. 739 and 740. 1896. oe 
*Syn. Fl. 2: part 1, Suppl. 412. 
