6o 



AMYGDALACEAE 



Cerasus PARVIFOLIA Greene, Proc. Biol. Soc. Wash. 18: 59* 

 1905- 

 No. 7929, collected June i, on the banks of the Sacramento 

 opposite Upper Soda Spring, Siskiyou county, in young fruit, 

 elevation about 2400 feet. It is a branching shrub 5 or 6 feet 

 high, found at intervals along the river. 



No. 8045, collected June 16 in flower, back of Sisson on the 

 Mt. Shasta trail, elevation about 4500 feet. This is from type 

 locality. It is common in that region, often forming extensive 

 thickets to the exclusion of other shrubs- The petals are round- 

 obovate, 3 mm, across. 



Padus demissa (Nutt.) Roem. Syn. Monog. 3: 87. 1847. 



Cerasus demissa Nutt. T. & G. Fl. N. A. 1: 411. 1840. 



Pi'unus demissa Walp. Rep. 3: 10. 1843. 



Prunus Virginiana var. demissa Torr. U. S. Expl. Exped. 

 17: 284. 1874. 



No. 7965, collected June 5, in flower, just below Shasta 

 Springs, Siskiyou county, on the Sacramento, growing near the 

 water, but unshaded by trees. It occurred as a slender shrub 

 with few branches. It differs a little from the original from 

 "plains of the Oregon toward the sea, and at the mouth of the 

 Wahlamet," in being finely serrulate with appressed teeth point- 

 ing forward, instead of "sharply serrulate with straight teeth," 

 and quite glabrous, not "more or less pubescent beneath." 



No. 8004, collected June 9, at Yreka, Siskiyou county, at 

 the base of the hills east of the town, along an irrigating ditch. 

 Here it was a tree about 30 feet high, with a trunk diameter of 

 6 or 8 inches. The leaves are mostly large, about three times 

 the size of those in the ordinary form, abruptly and shortly 

 pointed rather than acute, the base somewhat narrowed and fre- 

 quently emarginate; but on the same branch may be seen small 

 leaves of the ordinary size and shape. 



