ROSACEA. 



403 



towards the placenta. The fruit is a one-celled one-seeded drupe, 

 crowned by the remains of the calyx and androceum. Till quite 

 recently the only known species of this genus v/as a Madeiran 

 shrub,' with alternate crowded simple petiolate leaves possessing 

 two caducous stipules, and with the flowers in axillary and terminal 

 racemes. We may hence consider Chamameles as a unicarpellary 

 Cratcegus, which by the degeneration of its gynseceum becomes 

 analogous to the Alchemils and Burnets among the Jf/rimoniece, 

 CercGcarpus and PnrsUa among the Fragariea, or Stephanandra 

 among the Spireecc, also thus forming a transition between P7jrfia> 

 and the principal genus of the Plum series. 



VII. PLUM SERIES. 

 In the Plum genus' (Fr., Prunier—^^^. 468-483) we find regular 



Prunus Amygdalus (Almond). 



Fig. 469. 

 Leaf-bearing branch. 



Fio. 470. 

 Flovver-bciirin<r briincli. 



hermaphrodite flowers.' The receptacle is more or less concave, 



' C. coriacea LiNDL., loe. cit. — Lowe, Fl. 

 Mader., 255. We have recently described a 

 second species of American origin, C. mexivana 

 {Adansonia, ix. 148, n. 20), which, with a very 

 different foliage, and covered with a pretty copious 

 rust-coloured down, has, however, exactly the 

 flowers of the Madeira species. The petals arc 

 contorted, and the inflorescence is a panicle of 

 cymes terminating the young branches. 



2 Primus T., Instit., 622, t. 398.— L., Gen., 

 n. 620.— Adans., Fam. des PL, ii. ,305.— J., 



aen., 341.— G.'EUTif., Frucf., ii. 74, t. 93.— 

 Lamk., Diet., V. 663 ; Suppl., iv., 583 ; III, t. 

 432. — DC, Prodr., ii. 532. — Spacii, Suit, a 

 Buffon, i. 391.— Endl., Gen., n. 6046.— H. H., 

 Oen., 609, n. 13 (inch Pnmophora Xkck., 

 Armeniaca T., Persica T., Amj/(/ilalus'[!., Amj/g- 

 dalophora Neck., Cerasus J., Laurocerasus T., 

 Cminophora Neck., Ceraseidos SiEB. & Zucc, 

 Fmplectocladus Tore.). 



^ Or exceptionally polygamous by abortion of 



the gynaBceum. 



nn 2 



