GOURLEY: FRUIT BUD FORMATION 457 
M. astrachanica Dum.-Cours M. floribunda Sieb. 
(M. baccataX M. pumila) M. Arnoldiana Rehd. (M. baccata 
M. Sargentit Rehd. x M. floribunda) 
M. prunifolia Borkh. M. spectabilis Borkh. 
M. prunifolia Rinki Rehd. M. Scheideckeri Zabel (M. flori- 
M. zumi Rehd. . bunda X pruntfolia) 
M. micromalus Makino (M.M. Halliana Koehne 
baccata X M. speciabilis) 
M. thetfera Rehd. Pyrus ovoidea Rehd. 
M. Sieboldu Rehd. calotarbe P. phaeocarpa Rehd. 
Rehd. P. betulaefolia Bge. 
M. cerasifera Spach (M. baccata P. Bretschneideri Rehd. 
XM. pumila) 
This would indicate a tendency for original species to flower 
as above described, although in our cultivated varieties of Malus 
pumild Mill. the spur system of flowering is the common method 
and the axillary formation can be ignored as of no special commer- 
cial importance. It is of some interest to note that none of our 
American species of Malus, such as M. coronaria, M. toensts and 
M. augustifolia, showed axillary flower, buds, although the trees. 
were blooming full. Whether this is always true, I cannot state. 
AGRICULTURAL EXPERIMENT STATION, 
D AM, NEw HAMPSHIRE 
