BOTANY. 



29 



Description. A tree of medium size ; leaves deeply sinuate, three principal lobes on either 

 side, which terminate in several acute points, glabrous above and below. Fruit solitary or 

 clustered, nearly sessile, gland roundish-ovoid, or, more commonly, elliptical, terminating in 

 an accute projecting point, greenish brown in color, 1 to 1\ inch long, cup hemispherical, covered 

 with elongated acute scales. 



This oak is found in different parts of California, but, apparently, does not extend northward 

 beyond the Oregon line. I have specimens collected both south and north of San Francisco, in 

 the coast mountains, and we found it occurring in considerable numbers between Fort Reading 

 and Lassen s butte, on the western slope of the Sierra Nevada, in northern California. Where 

 we observed it, it forms a tree of small, or, at most, moderate size, and of a straggling, irregular 

 growth. About McCumber s it is the only deciduous tree growing in the pine forest. 



Its resemblance to Q. tinctoria and to Q. coccinea of the eastern States is striking, but it is 

 difficult to say to which it is most closely allied. The leaves are smoother and the lobes more 

 acute than is usual with those of Q. tinctoria; in these respects more resembling Q. coccinea. 

 In the general aspect of the trunk and bark it is, however, more like Q. tinctoria. 



The fruit is much larger and generally of a different form from that of either of the allied 

 species, the acorn being frequently more than an inch in length by -| of an inch in diameter ; 

 when fully grown they are rather cylindrical than ovoid, uniformly rounded at the ends, and 

 with a prominent point at the summit. The cup is hemispherical, covered with ovoid acute 

 scales. 



The differences of habit from the eastern species which it exhibits, as well as the differences oi 

 leaves and fruit, lead me to regard it as distinct ; and I have dedicated it to my friend Dr. A. 

 Kellogg, of San Francisco, who is devoting himself with so much industry and success to the 

 study of the plants of his adopted State. 



QUERCUS HINDSII. (Plate I.) The long-acorned oak. 



Q. HINDSII. Bentli. Sot. Sulph. p. 55. 



Q. LONGIGLANDA. TorT. Fremont s Geog. Mem. of California. 



Fig. 7. 



natural size. 



Fig. 7. Branch, leaves, and acorn of Q. Hindsii, 



Description. A very large tree, allied to Q. alba of the eastern States ; bark thick and rough ; 

 leaves deeply and unequally lobed ; lobes numerous, rounded, obtuse ; young leaves pubescent 



