396 CALIFORNIA ACADEMY OF SCIENCES. 



333. Tree 15 — 25 feet high, with compact and well rounded 

 head, the trunk with rough dark bark; evergreen; leaves 

 usually ovate-acuminate, 3 — 4 inches long, 2 — 2| inches 

 broad, entire or remotely denticulate, rarely lanceolate- 

 acuminate, 3 inches long, and | inch broad, sometimes 

 broadly ovate and abruptly acute, the margin spinose-serrate : 

 inflorescence racemose : drupe orbicular, slightly compressed 

 laterally, } inch in length and breadth, with a very conspic- 

 uous suture on one side, dark red-purple, the thin pulp 

 sweet, with also a bitter-almond flavor, but no acidity or 

 astringency: putamen thin, rather firm-cartilaginous than 

 ligneous. 



Yery common on all parts of the island; only occasion- 

 ally exhibiting the very narrow leaves which I have de- 

 scribed : the spinose-serrate foliage mo.-tly appertaining 

 to young trees. 



Mr. Lyon cites no place where Nuttall published such a 

 name as Prunus occidentalis, and I can find none. Moreover, 

 Nuttall in common with very many able botanists, held that 

 cherries and plums are of distinct genera, and this, if he 

 named it even in manuscript, he must have called Cerasiis 

 occiderdalis, rather than Prunus. 



81. RuBUS URSINUS, Cham, and Schlect. Linna3a. ii. 11. — 

 Rare near the shore on the north side : apparently not yet 

 of fruiting age. 



82. Cercocarpus betul^folius, Nutt.; Hook. Ic. t. 323. 

 Trees of ten 18 — 25 feet high, with clean trunk and smooth 

 light gray bark, the branches somewhat drooping, the whole 

 habit very unlike that of C. parvifolius: leaves not rarely 2J 

 inches long and IJ inches broad: young twigs with the odor 

 and flavor of the black birch, and it was doubtless in refer- 

 ence to this quality as much as to the morphology of the 

 foliage that Nuttall, who knew all about the tree, named it 

 (ungrammatically) C. betuloides. 



