66 FLORAL STRUCTURE AND AFFINITIES OF SAPOTACE^. 



being axillary to one of the opi^osite scales which are the first 

 production of the shoot axillary to the foliage leaf. The bractlets 

 are here always present, coriaceous, often caducous ; and, as 

 they are always at the very base of the pedicel, the adult 

 inflorescence is described as fascicled. The primary axillary 

 shoot on which these pau'ed fascicles are formed may remain 

 dormant altogether, or grow out sooner or later into an inno- 

 vation. 



Calyx. — This is quincuncial in number, order of appearance of 

 individual parts, and imbrication in the adult flower in both 

 species of Ckrysophyllum. Sepal 1 is between the parent axis and 

 the right bractlet, 2 between the axis and the left bractlet, and 4 is 

 posterior. 



In the remaining species (/) the calyx consists of two equal 

 alternating, successive whorls — 2-merous in Bassia and Dasyaulm, 

 8-merous in Achras, 4-merous in both species of Mimusops. The 

 outer sepals, when two in number, alternate with the bractlets ; 

 when three, two are an tero -lateral, and the thhd posterior ; when 

 four, two are antero-, two postero-lateral. 



In all the other species the calyx falls under one or other 

 of the above categories. 



Corolla. — With this organ begins the multiphcation of parts 

 so much affected by this Order. In Chr y soph y Hum, however, as in 

 several TernstrccmiacecB, the petals are quincuncial in origin,"' like 

 the sepals wdth which they alternate, but in the contrary direction. 

 Petal 1 is between sepals 1 and 3, or 1 and 4. 



In all the others (/) the corolla begins by a simultaneous 

 whorl, isomerous and alternating with the calyx as a whole. This 

 is aD that we have in Achras and Mimusojys. 



In Bassia, a second isomerous whorl is formed, alternating with 

 the former, and at first internal to it, though soon appearing as if 

 intercalated. 



In Dasyaulus, after the formation of the four alternisepalous 

 petals, the receptacle broadens, and another petal forms in front of 

 cither inner sepal, raising the number to six. 



In Lucuma itiaryinata, L. curvifolia, &c., (d), six petals succeed 

 four sepals ; but here two are external and in front of the outer 

 sepals, and then come the four alternisepalous ones. 



The so-called outer petals of Mimusops (_/'), as of Imhricaria, 

 Lahramia, Eichleria, gen. nov.,t Bumelia and DipJioUs (d), were for 

 the first time correctly interpreted as stiimles {" yebeiibldttchcji'') 

 by Eichler. My own observations are as follows :-- After the 

 appearance of both androecium and pistil, when the true petals 

 are already closely imbricated, a horizontal thickening appears 

 outside and just above the base of each petal. Owing to lateral 

 bulgings, this thickened bar soon appears depressed in the centre. 

 Each bulging then enlarges, and outstrips for the time the parent 



* As 1 judge from their relative size at the first raoment when 1 was able to 

 sec the petaline tubercles at all ; but I never found less than five present, or 

 clsr no petals at all. 



+ See Ain'EM>ix. 



