85 



still remained on the bushes, permitting certain identification. 

 The color of the young leaves is pinkish-green, varying to dark 

 reddish and light grayish, each bush being uniform or almost so. 

 At one place clumps of the dark reddish and light grayish forms 

 were growing close together, and close to them was a light green 

 clump of Q. Fendleri, all three strongly contrasting. Dr. Ryd- 

 berg speaks of the early leaves of Q. Fendleri as gray, but I did 

 not find them so, though certain grayish forms referred to Q. un- 

 dulata showed some approach to Q. Fendleri. 



Quercus Fendleri Liebm. The light green leaves (the young- 

 est sometimes pinkish) were usually better developed than those 

 of other members of the series. If it were not so very common, 

 one could imagine Q. Fendleri a hybrid between Q. undidata and 

 Q. Gambelii.* 



Quercus Emoryi Torr. The single clump which I referred 

 to this species grows in front of the bath-house, and it certainly 

 has relatively large leaves which agree with Rydberg's figure ; 

 it is also in stature more like Q. Gambelii than Q. undidata, etc. 

 However, the genuine Q. undidata throws up vigorous shoots 

 from the roots, which bear dark red, large leaves just like those 

 of the supposed Q. Emoryi. My present impression is that the 

 Hot Springs plant is really a form derived from Q. undidata, on 

 the spot, and not genetically connected with Q. Emoryi of * the 

 south, though the latter probably had a similar origin. The 

 leaves of my plant are full of small lenticular galls, not observed 

 in the other forms. This refers of course to the leaves of last 

 year ; those of this year are pink, and only just out of bud. The 

 clump, with its lifeless appearance, contrasts curiously with a 

 lively green clump of Q. Gambelii close by. 



Quercus grisea Liebm. This grows larger than most Q. un- 

 didata, and is late in coming out. The young leaves are pink. 

 The form of the mature leaves varies from that of Q. undidata to 

 that of Q. grisea on the same bush, though many bushes have 

 all the leaves unmistakably grisea. I am decidedly of the opin- 

 ion that Q. grisea is only a subspecies of Q. undidata. 



* The known localities of Q. Fendleri are apparently those in which this might 

 be possible, with the exception of Canadian River, Texas, where Q. Gambelii could 

 hardly occur. 



