24 



SYSTEMATIC POMOLOGY 



and graduall}^ assume various directions, and when it is perfectly 

 matured we find them in four distinct forms: (1) Divergent, when 

 the segments are quite recurved or reflexed, frequently so much 

 as to fall back flat on the fruit in the form of a star; (2) erect 

 convergent, when the segments are never reflexed, but are erect 

 with their margins merely touching and their points divergent; 



Segments divergent. 



Segments erect convergent. 



(3) flat convergent^ when the segments are flat, closing the eye, 

 but with their margins merely touching and not overlapping each 

 other; (4) connivcnt, when the segments are all close together, over- 

 lapping each other and forming a compact cone. I find the segments 

 are too variable, however, to be depended upon for final judgment 

 in aU cases, although they are very useful in many varieties. 



Segments flat convergent. Segments flat convergent. 



5. Core.— To the foregoing four divisions by Hogg should be added 

 two points given by Warder. If the outline of the core meets on the 

 inner point or end of the calyx-tube, it is meeting; if some distance 

 below, it is clasping. This is a useful point \\ith many varieties. 



Segments oonnivent. 



Segments connivent. 



Dr. Hogg's key may now be outlined briefly : 



Stamens: 1, marginal; 2, median; :3, basal. Tube: 1, conical; 

 2, funnel-shaped. Cells: 1, axile: 2, abaxile. Cefls: 1, roimd; 2 

 ovate; 3, obovate; 4, elliptical. Segments: 1, divergent; 2 erect 

 convergent; 3, flat convergent ; 4, connivcnt. 



The above jirovides for 102 classes, eacli of which if necessary 

 may bo further subdivided Ijy form and color into S divisions as fol- 



