526 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



as the series from a to e, figure 4, indicates. There may be a 

 gradual change between successive flowers in the subtending 

 structure from a well-developed leaf with stipules to a very small 

 filiform bract, or the change may be quite abrupt. Occasionally 

 at the base of the terminal flower a rudimentary bract was found. 

 This bract sometimes contained a bud and evidently represented a 

 flower which failed to develop. The normal type of inflorescence 

 in Pynis Mains is shown in plate 33, figure 8. Each flower is 

 borne upon a pedicel, the pedicels having their origin in the com- 

 mon axis or peduncle. The distinction between a pedicel and a 

 peduncle is made clear by the irregularity shown in plate 34, 

 figure I, where a peduncle, here a partial peduncle, is branched 

 bearing two flowers which are pedicelled. If the inflorescence 

 shown in plate 33, figure 8 is lengthened so that the flowers are 

 placed on an elongated axis instead of crowded on a very short 

 axis, a figure such as is shown in plate 34, figure 7 would be 

 constructed. The dotted line represents the axis of the inflores- 

 cence or the peduncle. It is terminated by the pedicel of the old- 

 est flower. The pedicels of the lateral flowers are found in the 

 axils of bracts or leaves, A solitary bractlet or a pair of bractlets 

 usually may be found upon the pedicels. They may be at the 

 base of the pedicel or irregularly placed at any point on the pedicel. 

 These bractlets are deciduous as are the bracts subtending the 

 pedicels. The number of flowers in an inflorescence varies usually 

 from 4 to 7. 



It will be noted on old twigs at the end of the "purse" where 

 four or five scars have been made by the loss of the apple stems or 

 pedicels, that a new scar has formed just beneath them. This 

 shows very clearly in twigs where the apples have failed to develop 

 and persist as shrunken mummies attached to the stem. This 

 condition is shown in plate 34, figure 5. The edge of the new 

 scar is seen beneath the little cluster of undeveloped fruits. With 

 very little pressure such a cluster may be removed. Figure 6, 

 plate 34, shows the cluster removed and still united by the com- 

 mon tissue beneath. This may be considered the complete 

 inflorescence and the axis or peduncle becomes with age somewhat 

 disc-shaped. 



Mention has been made of the abortive bract with its bud, 

 occasionally found at the base of the terminal llowrr. It might 



