ROSACEA. 38n 



diplostemonous androceum and a unicarpellary g-ynseceum. In fact, 

 its flowers possess a campanulate receptacle, lined by a thin glandular 

 disk, and bearing on its edges five sepals and five alternating petals 

 (both sets imbricated), and ten stamens with introrse anthers super- 

 posed to the perianth-leaves ; while in the bottom of its concavity 

 is inserted the single carpel, whose one-celled ovary contains two 

 ovules, at first descending,' placed side by side on a parietal pla- 

 centa, and with their raphes towards it; the style is terminal with 

 a capitate stigma. The fruit is a follicle, enveloped in the persistent 

 receptacle, and enclosing one or two ascending or descending seeds, 

 which each contain an embryo with its radicle inferior or superior, 

 and with orbicular cotyledons surrounded by a variable tliickness of 

 fleshy albumen. The only known species" is a Japanese shrub with 

 slender flexible branches, scaly leaf-buds, and alternate incised leaves, 

 whose petiole has two lateral stipules at its base. The inflorescence 

 consists of short racemes or simple or compound corymbs of flowers, 

 very like those of Prinsepia ; while in their unicarpellary gynseceum 

 they come very close to those of the Prunea generally ; so that Ste- 

 ^jhnnandra among the Spireea represents a reduced type, like that of 

 Purshia among the Fragariece, or Chamameles in the Pyrece. 



V. QUILLAJA SERIES. 



Quillaja^ (figs. 444-447) has regular dioecious or hermaphrodite 

 flowers. In the hermaphrodite ones we find a pentamerous calyx 

 and corolla inserted on the circumference of a shallow concave recep- 

 tacle. The sepals are valvate in aestivation, while the petals are 

 imbricated ; but this can only be ascertained when young, for they 

 are small and spathulate, and early cease touching. The receptacle is 

 lined by a glandular disk, whose five lobes are prolonged along the 



' Later on they may become transverse, with t. 771'. — DC, Prodr., ii. 547. — Spacii, Suit. 



their raphes inferior ; or one of them may a Biiffon, i. 448. — Don, Mdinb. New Philos. 



even become ascending in certain flowers. Joiini., xii. llO.^LiNDL., Teff. Khigd., 564. — 



2 iS". flexmsa Sieb. & Zucc, he. cii. — MiQ., (iuiLLEM., Did. d'llist. Nat, xiv. 419. — 

 Ann. Mus. Lugd. Bat., iii. 33.— (Spircso in- Endl., Gen., n. 6397. — B. H., Gen., 614, n. 

 cisa Thuxob., J'Z. J^fj^., 213.— Cambess., Zoc. 28, — Smegmadermos \\. & Pav., P/W;-., 133, t. 

 cit., 262.— Ser., in DC. Prodr., n. 9. ^\.— Smegma ria W., ex Guillem., Ioc. cit.— 



3 MoL., Chil., ed. 2, 298.— J., Gen., 444.— FonteneUea A. S. H. & Tui,., Ann. So. Nat., ser. 

 H. B. K., Nov. Gen. et Spec, vi. 236, not.— 2, xvii. 141, t. 7. 



Lame., Diet., vi. 33; Suppl., iv. 638; III., 



