BOTANY OF SANTA CRUZ ISLAND. 393 



in diameter, clothed with a smooth light gray bark: branches 

 few and open : leaves oblong-oval, commonly 3 inches long, 

 including the half-inch petiole, and IJ inches broad, obtuse 

 at both ends, mncronate at apex, the margin slightly but 

 very regularly glandular-crenulate: color and texture of leaf 

 as in R. crocea; fruit also the same except as to size, being 

 much larger. 



The tree here spoken of, although receiving its best 

 development on Santa Cruz, is well known in western Cali- 

 fornia from Lake county southward along the Mt. Diablo 

 range, and in herbarium specimens may, with some excuse 

 be referred, as it long Iims been, to Nuttall's R. crocea; 

 but no one in the field can confound tlie two. I saw the 

 same on Cedros Island two years ago. Yet there is a little 

 doubt about its being the plant described by the late Dr. 

 Kellogg. But in view of their probable identity I dare not 

 propose a new name for what, if it be the same, has already 

 two by the same author, the otlier one being R. ilicifolia. 



44. Ceanothus crassifolius, Torr. Pac. R. Rep. iv. 75; 

 Bot. Mex. Bound. 46. t. 11. — Not rare, yet nowhere forming 

 thickets. 



45. Ceanothus arboreus, Greene (see page 144). 



46. Acer macrophyllum, Pursh, Fl. i. 267. — Common in 

 deep canons of the north side, and very luxuriant . 



47. Rhus diversiloba, Torr. & Gray, Fl. i. 218. — North 

 side, rare. 



48. Rhus integrifolia, Benth. & Hook. Gen. PI. i. 419. 

 Common on the northward slope, and of shapely tree-like 

 proportions, much larger than ever seen on the mainland. 



49. Rhus ovata, Watson, Proc. Am. Acad. xx. 358. — • 

 Interior of the island, where it is common. 



50. LupiNus Chamissonis, Esch. Mem. Acad. Petrop. x. 

 288. — Interior; also on islets near the shore; shrub of good 

 size. 



