BUBIACEJE. 



353 



within the four others. The prsefloration is imbricate. The 

 andrcecium is composed of five stamens, alternate with the lobes of 

 the corolla and inserted on the tube, composed of a filament and a 

 bilocular introrse anther dehiscing by two longitudinal clefts. The 

 ovary is interior with two cells/ complete or incomplete, and is 



Diervilla (jOalyptrostigma) Middendorfflana, 



Fig. 358. Seed (f). 



Fig. 357. Dehiscing fruit (?). 



Fig. 359. Long. sect, 

 of seed. 



surmounted by a style the stigmatiferous head of which is sometimes 

 obscurely bilobed. Each cell contains numerous- ovules, primarily 

 descending, anatropous. The fruit, often surmounted by the calyx, 

 is an elongate septicidal capsule, the seeds of which are bare, angular, 

 or bordered with a wing,* sometimes narrow as in some Weigelas, and 

 sometimes elongate, as in D. Middendorffiana (fig, 357-369), type of 

 a genus Galyptrostigma. The ^mall embryo is surrounded by a fleshy 

 albumen. Diervilla consists of erect or subsarmentose shrubs of 

 China, Japan and North America. The leaves are opposite, sessile 

 or petiolate, entire or serrate. The flowers ^ are in simple oy com- 



£ibl. QenSm (Jan. 1839). — ^H. Bn. Adansonia, 

 i. 364.— B. H. Gen. ii. 6, n. ll.—Weigela Thunb. 

 Act. Molm. (1780) 135, t. 5; Trans. Linn. Soe. 

 ii. 331; Fl. Jap. 6, t. 16.— Lamk. III. t. 105.— 

 - A. DC. Ann. Sc. Sat. ser. 2, xi. 237. — Weigelia 

 PnHS. Synops. i. lIQ.-^Caljisphyrum Bgb. Enum. 

 PI. Chin. Bor. 33. — Endl. Gen. n. 3339.— 



VOL. VII. 



Calyptrostigma Tbauttv. et Met. Middend, Meis. 

 Fl. Ochot. 46 (not Kl.). 



^ Sometimes three. 



2 H. Bn. Adansonia, xii. 310 ; Bull. Soe. Linn, 

 Far. 202. 



? Yellow, white, pink or purple. 



A a 



