CELASTRACE3:. 19 



flowers which are sometimes sessile as in the Boxes proper, 1 and some- 

 times pedicellate, as is more frequently the case in certain species 

 from the Antilles of which the genus Tricera 2 has been made. 



Beside the Boxes, this sub-series (Eubaxeœ) includes two genera 

 with alternate leaves and elongated inflorescence, in which the 

 female flowers occupy the base and the male the summit. These 

 are Pachysandra (fig. 35, 36), and Sarcococca. The former are 

 perennial herbaceous plants, of which one species inhabits North 

 America, and the other Japan. Their fruit is finally dry, thin, and 

 dehiscent, and their seeds, analogous to those of the Boxes, are 

 furnished with an umbilical aril, which is prolonged somewhat over 

 the summit of the raphe. The latter, all natives of Southern Asia 

 or Java, are shrubs or small trees, with fleshy fruit, and indé- 

 hiscent. 



Simmondsia, a Californian shrub with opposite leaves, of which 

 one or two species are known, constitute by themselves a small sub- 

 series (Simmondsietv), in which the unisexual flowers have, either 

 a dozen or more stamens arranged in two or three séries, or an ovary 

 with three uniovulate cells. The fruit is capsular and loculicidal, 

 furnished with a filiform tripartite columella. 



In the small group of Stylocercce, consisting of a single genus 

 Styloceras, the organisation of the gynœcium and the eccentric 

 insertion of the long styles are fundamentally the same as in the 

 preceding types. But in the female flowers, often furnished with a 

 perianth, the ovarian cells are reduplicated into uniovulate half-cells 

 by false centripetal partitions which advance between the two ovules 

 of the same cell. The male flowers are without a calyx, and consist 

 solely of a variable number (5-30) of nude and central stamens. 

 They are trees of South America, with alternate coriaceous leaves 

 without stipules, and axillary amentiform inflorescence, unisexual or 

 bisexual. 



VII. GEISSOLOMA SERIES. 



The Geissolomas 3 (fig. 37, 38) have regular hermaphrodite flowers, 

 monoperianthus and tetramerous. The calyx is formed of four sepals, 



1 Eubuxus H. Bn. Buxac. 58.— M. Arg. Prodi: 3 Lindl. ex K. Zitmaa, v. 678.— A. Juss. 

 17, sect. 2. j, m . Sc. Nat. sér. 3, vi. 19, 27, t. 4.— Sond. 



2 Sw. Fl. Ind. Occ. i. 333, t. 7.— Endl. Gen. Linnœa, xxiii. 105.— Endl. Gen. n. 2118.— H. 

 n. 586S.— H. Bn. Buxac. 66. Bn. Payer Ftm. Nat. 334 ; Bull. Soc. Linn. Par. 



2—2 



