658 



ARBORETUM ET FRUTICETUM BRITANNICUM. 



Calycine segments linear-lanceolate, bluntish. 

 Segments of corolla broadish at top. Flow- 

 ering stems usually erect. Flowers void of 

 scent. Corolla blue, with white throat, 

 varying to purple and white ; of a smaller 

 size than that of V. major. (Don's Mill.) 

 A trailing evergreen undershrub. Europe ; 

 in many places in Britain, in hedges and 

 woods, in rather damp situations. Flowers 

 blue ; March till September. 



Varieties. 



VI. 2 fbliis argenteis Lodd. Cat. 

 Leaves vai-iegated with white. 



V. m. Sfoliis aiireis Lodd. Cat. Leaves 

 variegated with yellow. 



V. m. ^flore dlbo Lodd. Cat. Flowers 

 white. 



V. m. 5jldrepleno Lodd. Cat Flowers 

 double. 



V. m. 6 flore piiniceo Lodd. Cat. 

 Flowers red. 



V. m. 7 acutiflbra Bert. Leaves ovate 

 acute at both ends; margins glabrous. 

 Segments of corolla oblique ; ovate- 

 acuminate. South of Europe. Flowers 



blue ; March and April. 



Order LI. ^SCLEPIAD^TE^. 



Ord. Char. Calyx 5-cleft, persistent. Corolla 5-lobed ; aestivation usuall)| 

 imbricate. Stamens 5, epipetalous. Polle?i masses equal in number to thq 

 cells of the anthers, which are 2 or 4, and fixed to fine processes of thd 

 stigma. Ovarium twin. Styles 2, crowned by one stigma. Fruif of ^ 

 follicles. Seeds numerous, imbricate, furnished with a tuft of hair at thi] 

 umbihcus. Albumen thin. The pollen being combined into a definiti 

 number of waxy masses separates this order from all other dicotyledonou 

 orders. (G. Don,^ 



Leaves simple, opposite, exstipulate, deciduous ; shining, entire. Flower 

 subumbellate. Twining shrubs ; natives of South Europe and Asia. i 



Genus I. 



PERFPLOCA L. The Periploca. Lin. Syst. Pentandria Digynia. 



Jdentificalion. R. Br. in Mem. Wern. Soc, 1. p. 57. ; Don's Mill.. 4. p. 163. 



Synonymes. Periploca Fr. ; Schlinge, Ger. ; Periploca, Ital. 



Derivation. From pcripleko, to wrap about ; in allusion tc the twining stems. 



Gen. Char., Sfc. Corolla rotate. Th-oat furnished with 5 awned scales, whi.l 

 alternate with the segments of the corolla. Filaments distinct. Anting 

 cohering, bearded on the back. Pollen masses applied to the dilated toj 

 of the corpuscles of the stigma, solitary, or composed of 4 confluent cm 

 Stigma almost mutic. Follicles cylindrical, much divaricate, smooth. Sa 

 comose. (Don's Mill.) 



Leaves as in tiie Order. Floivers subcorymbose, interpetiolar. Shni 



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