1330 ARBORETUM AND FRUTICETUM. PART III. 



A. glauca Desf., Bot. Mag., 1. 1115., Lodd. Cat, ed. 1836, is a native of Barbary ; introduced in 

 1785. It is evergreen, like the preceding sort. 



A. altissima Desf., A. cauddta Desf., and A. trilobata Willd., are described in the Nouv. Du Hamel 

 as growing in French gardens, with protection during winter. A. trilobata Bot. Reg., t. 1399., is a 

 native of South America, where it grows to the height of 6 ft. or 7 ft. There is a species of ^risto- 

 16chia a native of China, against a wall in the Horticultural Society's Garden, which is not yet 

 named. It has stood there four years, and appears quite hardy. 



CHAP. XCIX. 



OF THE HARDY AND HALF-HARDY LIGNEOUS PLANTS OF THE 

 ORDER E 



THE hardy species belonging to this order are included in 3 genera, namely 

 .Euphorbza L., Stillfngia Garden, and .Suxus Tourn. ; and these have the fol- 

 lowing characters : 



JBuPHo'RB/^ L. What seem flowers, and were formerly deemed flowers, 

 are now regarded as each an inflorescence. This consists of an involucre, 

 within which flowers of both sexes are associated, many male flowers around 

 a solitary central female one. Involucre of one leaf, bell-shaped or top- 

 shaped, with a limb in 8 10 segments, the outer coloured and resembling 

 petals. Male flower. This consists of a stamen, articulated upon a 

 supporting column that is attended, (?) at its base, by, mostly minute, chaffy 

 scales. Female flower. Pistil solitary, central, upon a long pedicel, and 

 becoming protruded. Ovary roundish, of 3 cells, each containing 1 ovule, 

 affixed to the angle next the centre of the ovary. Styles 3, connate at 

 the base, each ending in a bifid stigma. Fruit a regma. (Lind/ey's Tntr. 

 to Bot.} Valves 3, with a partition from the centre of each, by which they 

 form 3 cells. Seeds 1 in a cell ; cells bursting elastically. Sap, in all, milky, 

 resinous ; and, in most, acrid. Leaves, in most, alternate. Inflorescences 

 disposed in umbels or panicles. (T. Nces ab Esenbeck, Gen. PI. Fl. Germ.; 

 Smith y Eng. Fl. ; and observation.) 



STILLI'NG/^ Garden. Flowers unisexual. Males in a spike ; females at the 

 base of the same spike : (?) the two kinds, in S. /igustrina, upon distinct 

 plants. Male. Seven flowers together, within an entire involucre ; or, in 

 S. /igustrina, with the flowers not involucrated, but solitary in the axil of a 

 bractea. Calyx like a corolla, of 1 piece, funnel-shaped, its margin jagged ; in 

 S. /igustrina the calyx is 3-cleft, and rather flat. Stamens 2-3; in S. /igustrina, 

 prominent, the filaments very slightly connected at the base. Female. 

 Involucre 1-flowered ; otherwise as in the male. Calyx superior, shaped as 

 in the male. Ovary roundish. Style thread-shaped. Stigmas 3. Fruit a 

 regma (Lindley's Intr. to Hot.), surrounded at the base by the involucre a 

 little enlarged, somewhat turbinate, bluntly triangular, 3-lobed, 3-celled, 

 1-seed in each cell. Sap milky. Leaves alternate, stipuled, entire. Spikes 

 of flowers solitary or dichotomous, terminal or lateral. (Smith in Rees's 

 Cyclop.; and Nutt. in his Gen. Amer.) 



Bu'xus Tourn. Flowers in axillary groups; unisexual in effect, but the male 

 flowers have a rudiment of a pistil; those of both sexes borne on one 

 plant. Male. Calyx of 4 minute leaves. Stamens 4, inserted under the 

 rudiment of a pistil. Female. Flowers singly, at the tip of groups of 

 male ones. Calyx as in the male. Ovary sessile, roundish, of 3 cells, and 2 

 ovules in each cell. Styles 3. Stigmas 3. Fruit a regma, leathery, beaked 

 with the styles ; consisting of 3 incomplete cells that open down the centre 

 and divide the style, and of 3 valves that bear the incomplete dissepiments in 

 their centres. Seeds 2 in a cell, pendulous, both enclosed in the endocarpial 

 lining of the cell; and this endocarpial lining, after the seed is ripe, disparts 

 elastically, to admit of, and conduce to, their dispersion. (T. Xees ab Escn- 

 beck's Gen. PI. Fl. Ger.) Evergreen shrubs, or small trees, with rigid, 



