208 THE MONTHLY BULLETIN. 



Peaches: Prunus Mira (Wild Chinese), 10 per cent; P. Persica 

 (Muir), 85 per cent; Salway, 90 per cent; Elberta, Oi per cent. 



Almonds: Amygdalus communis (bitter), 85 per cent; A. davidiana 

 (Chinese), 88 per cent; A. communis (sweet), 95 per cent; miscel- 

 laneous (sweet varieties), 80 to 90 per cent. 



Plums: Prunus pumila (sand plum), per cent; P. domestica 

 (Italian prune), 7 per cent; P, insiiitia (Purple Duane stock), 7 per 

 cent; P. domestica (German prune), 10 per cent; P. insititia (Damson), 

 10 per cent; P. domestica (Green Gage), 25 per cent; P. cerasifera 

 (hybrid) (Mariana), 85 per cent; P. triflora (Burbank), 90 per cent; 

 P. munsoniana (Wild Goose), 92 per cent; P. cerasifera (Myrobalan), 

 95 per cent; P. triflora (hybrid) (Wickson), 98 per cent; P. Simonii 

 (Simon), 99 per cent. 



Other Stocks. 



A large number of native species of plum are to be found in the 

 United States, many of which are suitable for stock of the stone fruits. 

 Among these are several types of hybrids that are vigorous and have 

 been used in certain sections as stock. There are also European, 

 Chinese and Siberian species of Prunus that may be excellent for stone 

 fruits. In California there are three or four wild species of Prunus 

 that may be adapted for certain sections and certain fruits. One of 

 these is the California wild plum, Prunus suhcordata, var., Kelloggii or 

 Sisson plum, found growing near ]\It. Shasta. Then there is the desert 

 apricot, P. eriogyna, growing on the very edge of the desert. This is 

 a bush, rarely a tree, from 6 to 12 feet high. The seedlings resemble 

 the cultivated apricot somew^hat in appearance of leaf. The pits ger- 

 minate quickl}^, 10 to 15 days, and if sown early in the spring they 

 would not require layering. In general appearance and size the pits 

 are quite similar to those of Myrobalan. A strong growing tap root is 

 quickly developed. It is not known whether this species will easily 

 transplant or how well it is adapted to the various stone fruits. It is 

 closely related botanically to the apricot and apricots have been 

 successfully grafted on it. 



The desert almond, P. fascicMlata, is native over a considerable area of 

 southern California. It is a small, slightly thorny shrub, 3 to 6 feet 

 high. Pits small, irregular in shape, thin walled, smooth with sharp 

 ridges. 



The Texas almond, P. minutiflora, maximum growth about 12 feet, 

 is found entirely in Texas and is often badly infected with crown 

 gall. Then there is a Mexican almond, P. microphylla, which closely 

 resembles the Texas almond. These would doubtless be adapted to the 

 peach and almond but might not show much advantage over those we 

 already grow. They have strong developed tap roots and are found 

 wild in desert localities. 



Field Inspection. 



Carefully discard all diseased trees, even if some have to be sacrificed 

 that have only small galls present. If the inspector does not throw out 

 the diseased trees the grower should do so. The following spring the 

 young trees should be carefully examined by digging away the earth 

 about the crown down to the roots. If the trunk shows any evidence of 

 gall formation, the tree should be mai-ked, either to be replaced by a 



