SAXIFRAGAOE&. 



357 



the form of their leaves, which are persistent, alternate, elongated, more 

 or less narrow, coriaceous, entire or incised into spiny teeth. The 

 flowers are collected into corymbiform cymes at the apex of a common 

 axillary peduncle, often flattened into a narrow cladode (fig. 412). 



Srexia madagascariensis. 



Fig. 413. 



Flower (^). 



Fig. 415. 



Long. sect, of flower (±\ 



Fig. 414. 

 Diagram. 



Anopterus 1 has a convex floral receptacle and a free, almost wholly 

 superior ovary. The perianth is double, imbricated, each whorl com- 

 prising from six to nine pieces. There are as many alternipetalous 

 stamens, slightly perigynous, 2 with free filaments and cordate or sagit- 

 tate versatile introrse anthers. The ovary is surmounted by a style 

 with two branches, stigmatiferous at the apex. It is one-celled ; on 

 its walls are two large placentas, horseshoe shaped, with the concavity 

 superior, on which are inserted numerous anatropous descending 

 ovules, with their microp} r les upwards and outwards. The fruit is 

 a coriaceous septicidal capsule, with a variable number of seeds on 

 the edges of the valves. The seeds are flattened and imbricated, 

 developed below into a large obovate wing, while in the upper part 

 is a fleshy albumen with a large axile embryo. The two known 

 species of this genus are shrubs, one Australian, 3 the other Tasma- 

 nia!]. 4 Their leaves are alternate, persistent, glabrous, coriaceous 

 exstipulate, incised into glandular teeth. The flowers, externally 



1 Labiix., PL Nouv.-Holl., i. 85, t, 112.— 

 DC, Frodr., iv. 96. — Spach, Suit, a Buffon, v. 

 33. — Exdi,., Gen., n. 4678. — H. Bn. in Adan- 

 sonia, v. 2S9.— B. H., Gen., 61S, n. 51. 



2 A small part of the cavitv of the ovary is, in 

 fact, below their insertion. 



3 A. Macleayanus F. M ctkll., in Journ. Pharm. 

 Soc. Vict. (1859).— Benth., Fl. Austral., ii. 

 439, n. 2.— Walp., Ann., vii. 908. 



4 A.glandulosus Labill., loo. cit., 86. — Hook. 

 ¥., Fl. Tasman., i. 151.— Bat. Mag., t. 4377. 



