404 



NATURAL HISTORY OF PLANTS. 



forming a sliort cup, sac, or tube. On its edges are inserted the 

 calyx formed of five' sepals, quincuucially imbricated in the bud, 

 and the corolla, whose petals are arranged and imbricated as in the 

 Roses. The stamens are inserted a little lower down than the 



Prunus Ami/gdaltLs. 



Fig. 472. 

 Lon^tudinal section of flower. 



perianth, above the rim of a glandular, often coloured disk lining 

 the whole inside of the receptacle. They are often twenty in 

 number: five superposed to the sepals, five to the petals, and ten 

 placed one on either side of each of the latter." Each consists of a 



free filament inflexed in the bud, 

 and an introrse two-celled anther de- 

 hiscing longitudinally. The unicar- 

 / JSR / ' fSk P^H^^y gyna?ceum,' inserted in the 



Pi f / Bl^ / ' fif 'bottom of the receptacle, consists of 



rl 'i I VI k >) (mi '^ one-celled ovary superposed to a 



sepal, surmounted by a terminal style, 

 dilated at the tip into a stigmati- 

 ferous head. A vertical groove runs 

 along the whole of the style and 

 ovary, answering to where the cavity 

 a parietal placenta, on which are inserted two col- 

 anatropous ovules, with their microj^yles superior, 



of the latter bears 

 lateral descendinir 



• There are often hoxainlroiiH flowers in Hevcrnl 

 ipccioN of the Hection Anii/f/dalus, l)ut there are 

 nirely tetrntiHTouii llowerH. 



■•' There lire pretty often thirty in Amiij/datuii 

 und Orasun, eiu-h peliil huvinp ttvo initteml of 

 tlirec in front of it. Tlie iindnM-euin Ih iilwuyH 

 wliiit wo liuvo tenned for MliortncMM' mkv iin 

 "undroceuMi of tin- /i'«.t,/<v,/ ." In tli.- IIdw. ih ..l 



tlie common Almond, witli tliirty Ntanicn!«, we 

 llrnt llnd two, tlie lar^eitt of all, in fVont of each 

 petal, und llien a third ulterniite with tluiH'. 

 The fonrth und fifth ure 8nper|K)Hed to the lintt 

 two, and are the yoiingi>«t and smiilleKt of all, 

 including even tliode Hnju'riKocd to the wpiiU. 



' We ofti'ii, however, find ahnornml llnwern in 

 /Vm«i/j», incliwinjr two or more free turjM'JH (li^T''. 



