RUT ACE JE. 403 



three monospermous cells, and the alternate or opposite leaves 

 are compound 3-5-foliolate. 



Toddalia, belonging to the warm regions of the Old World, has 

 sometimes been considered as the type of a special tribe of this 

 family, because its carpels are united into one single plurilocular 

 ovary ; but after what we'have seen, this character does not allow us 

 to place them in any other series but that of Zanthoxylon, whose 

 general organization they have with unisexual 2-5-merous flowers, 

 imbricated or valvate petals, an isostemonous androceum, uniovulate 

 cells, coriaceous or fleshy fruit, an embryo surrounded by a 

 fleshy albumen and alternate trifoliolate leaves, covered with 

 glandular punctures. 



VI. AMYRIS SERIES. 



The flowers of Amyris 1 (figs. 447-451) are hermaphrodite or 

 polygamous, with convex receptacle. The calyx is gamosepalous, 

 with four teeth, imbricated when young. The corolla is formed of 

 four alternate imbricated petals expanded at anthesis. The stamens 

 are eight in number, superposed, four to the divisions of the calyx } 

 and four shorter to the petals. Each of them is formed of a free 

 hypogynous exserted filament, and a two-celled introrse anther 

 dehiscing by two longitudinal clefts. The gynseceum, sterile and 

 rudimentary in the male flower, is accompanied at its base by a disk 

 more or less thick in the female or hermaphrodite flowers, when it is 

 composed of a single one-celled carpel, 2 surmounted by a style short 

 or almost wanting, more or less dilated, and covered above with 

 stigmatic papillse. Upon the wall of the ovary cell a placenta is 

 seen supporting two collateral descending ovules, with superior and 

 exterior micropyle. 3 The fruit is a globose or elongated drupe, 4 

 accompanied at its base by the persistent calyx. The thin charta- 

 ceous stone generally contains one seed, the coats covering a fleshy 

 albumen with plano-convex cotyledons and short superior radicle. 



1 L., Gen., n. 473 (part.). — J., Gen., 371. — (cd. Btjrm.), iv. 87. — Zucinium Pltjk., Almag., 



Lamk., Bid., i. 359 (part.).— K., in Ann. 8c. t. 201, fig. 3. — Toxicodendron Mill., Diet., n. 



Nat., ser. 1, ii. 364.— DC, Prodr., ii. 81 (part.). 9 (nee Thunb.). 



— Tuep., in Diet. Sc. Nat., Atl., t. 266. — 2 Which appears superposed to a petal. 



Spach, Suit, a Puffon, ii. 231.— Endl., Gen., 3 With double coat. 



n. 5947.— B. H., Gen., 327, 993, n. 17.— H. 4 Scanty, odoriferous, oily, often covered with 



Bn., in Adansonia, x. 319. — JElemifera Blum. glandular punctures. 



D D 2 



