(*90 



in flower and by him in fruit. Its leaves are usually neither 

 very dark green nor very shining above, pale and finely 

 puberulent beneath, obovate in outline, seldom lobed much 

 deeper than halfway to the midrib and with rounded lobes. 

 The cup is hemispherical or somewhat turbinate and [2-15 

 mm. in diameter, the acorn about 15 mm. long ami acute 

 ovoid. Neither Sargent's nor Greene's figures give a good 

 illustration of it. 



The description of J£. Gambelii by Liebman* differs con- 

 siderably from that of Nuttall, especially the following state- 

 ments, " foliis * profunde sinuato-pinnatilidis, * * * 

 subtus incanis pubescentibus * * * glande globosa, apicu- 

 lata," do not well agree with NuttalFs diagnosis. Liebman 

 does not claim that he had NuttalFs plant, for he published it 

 as 4L. Gambelii Liebm. Neither is it evident that the plate 

 published after Liebman 's death by Oersted was drawn from 

 Gambel's plant, although Liebman states that he had seen a 

 specimen collected by Gambel. I have seen a specimen of 

 Fendler's no. 806, which Liebman also includes, and this 

 matches exactly the plate referred to above. It also agrees 

 fully with Liebman's description. Fendler's no. 806 repre- 

 sents a specimen of an oak described under the name of .^. 

 stellata Utahensis by Alphonse DeCandolle, but with leaves 

 that are a little more deeply pinnatifid than usual. See 

 below. 



J^uerciis alba ft Gunnisonii Torr.f generally has narrower 

 leaves. In the type they are almost oblong in outline and 

 with rounded lobes directed forward, but in specimens from 

 Colorado which I refer here they are broader and obovate 

 and resemble those of ^ Gambelii, but are firmer, paler 

 and bluish above and pubescent but green beneath. The 

 fruit is different, the cup being larger, often over 15 mm. 

 The acorn is barrel-shaped, and obtuse or even depressed at 

 the apex. Sargent's PI. 368, Fig. 5 is a good figure of the 

 acorn, but none of the leaves are an exact illustration. 



* Overs. Dansk. Vidensk. Selsk. Forhandl. 1854: 169. 

 tPac. R. R. Rep. 2 1 : 130. 1855. 



