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Plate XXXIV. 



QUERCUS MACDONALDI, Greene. 

 Bibliography. 



QuERCus Macdonaldi, Greene, West Am. Oaks. 25 (1889), excluding the variety 



elegantula. 

 , Sargent in "Garden and Forest," ii, 471 (1889). 



Description. A small deciduous tree, from fifteen to thirty-five feet high, the trunk 

 rarely a foot or more in diameter, with a thin light gray bark which is rather finely rimose; 

 branches and twigs slender, numerous, forming a gracefully rounded and somewhat com- 

 pact head: branchlets and lower face of leaves minutely but closely stellate-pubescent; 

 surface of leaves glabrate in age; leaves about two and a half inches long, on petiole of a 

 half-inch, spatulate, the upper and broader portion sinuate-lobed, the lobes acutish and 

 mucronulate, the lower and narrower portion entire, tapering either gradually or abruptly 

 to the petiole: winter buds a line and a half long, ovate, acute, their scales indistinctly 

 ciliolate: fructification annual: acorns sessile; cup rather deeply hemispherical, conspicu- 

 ously tuberculate; nut ovate-oblong, acutish, less than an inch long. 



Habitat. Island of Santa Cruz, off the southern coast of California. Not many 

 specimens were observed, but these grew near streams, in good soil, and, although trees of 

 small or middle size only, were attractive by their symmetry and grace as seen among 

 other oaks of less regular outline. They were fruiting only very sparingly; but the acorns 

 were at least two-thirds grown at the time of my finding them, namely, early in August. 



Remarks. The species is dedicated to Captain McDonald, the munificent patron of 

 these and other researches into the history of our western trees. 



