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772 



ZYGOPHYLLE^E. VI. ZYGOPHYILUM. VII. GUAIACUM. 



/Wtioiw-flowered Bean-caper. Slirub 3 feet. 



16 Z. RETROFKA'CTUM (Thunb. prod. 80.) leaves stalked ; 

 leaflets obovate, smooth ; pedicels shorter than the leaves ; ovary 

 deeply 5-lobed. fj . G. Native of the Cape of Good Hope. 

 Branches spreading, recurved. Flowers very small. This species 

 comes nearest to Z. microphyllum. 



Retrograde-branched. Bean-caper. Shrub 1 to 3 feet. 



17 Z. SESSILIFOLUJM (Lin. spec. 552.) leaves almost sessile; 

 leaflets lanceolate-oval ; petioles ending in a spiny bristle ; cap- 

 sules globose, depressed, wingless. 1? . G. Native of the Cape 

 of Good Hope. Sims, bot. mag. t. 2184. Dill. hort. elth. t. 

 116. f. 142. Burm. afr. 4. t. 2. f. 1. Petals sulphur or orange- 

 coloured, with a brown spot at the base of each, crenate at the 

 tip. In some specimens the branches are much angled, in 

 others round, therefore there are probably two species confused. 



Sessile-leaved Bean-caper. Fl. July, Aug. Clt. 1713. Shrub 

 3 feet. 



18 Z. SPINOSUM (Lin. mant. 380.) leaves almost sessile ; leaf- 

 lets linear, fleshy, flattish ; petioles ending in a spiny bristle. Ij . 

 G. Native of the Cape of Good Hope. Burm. afr. 5. t. 2. f. 2. 

 exhibits spines along the branches, but in the specimens we have 

 seen the only spines are those terminating the petioles. Flowers 

 nodding, yellow. 



Spiny -stipuled Bean-caper. Fl. July, Aug. Clt. 1820. Shrub 

 2 feet. 



19 Z. CAPE'NSE (Lam. diet. 2. p. 443.) leaves sessile; leaflets 

 obovate-roundish, fleshy. Ij . G. Native of the Cape of Good 

 Hope. Flowers red. 



Cape Bean-caper. Shrub 2 feet. 



20 Z. ^E'STUANS (Lin. spec. 552.) leaves almost sessile ; 

 leaflets obovate, retuse ; petioles ending in a little bristle ; sti- 

 pulas 5 at each joint, sometimes twin, sometimes solitary. I/ . S. 

 Native of Surinam. Flowers and fruit unknown. 



Stinging Bean-caper. PI. 1 foot. 



* Leaves bifoliate ; leaflets terete. 



21 Z. COCCI'NEUM (Lin. spec. 551.) leaves stalked; leaflets 

 cylindrical, fleshy, smooth ; pedicels erect ; petals acuminated ; 

 capsules cylindrical. Tj. G. Native of Mauritania, in dry 

 deserts; also of Egypt. Shaw. afr. f. 231. Z. desertorum, 

 Forsk. descr. 87. icon. t. 11. Flowers scarlet. All kinds of 

 cattle, and even camels, refuse to eat this plant. 



Scarlet-SowereA Bean-caper. Clt. 1823. Shrub 1 foot. 



22 Z. A'LBUM (Lin. fil. dec. 1. t. 8.) leaves stalked ; leaflets cy- 

 lindrical, club-shaped, fleshy, cobwebbed ; pedicels erect ; petals 

 blunt ; capsules cylindrically-pentagonal. Tj . G. Native of 

 Egypt, Barbary, and the Canary Islands. D. C. pi. grass, t. 154. 

 Z. proliferum, Forsk. descr. 87. icon. t. 12. A. Stem procum- 

 bent. Petals white, crenate. 



fFtoe-flowered Bean-caper. Fl. Oct. Nov. Clt. 1779. Shrub 

 trailing. 



* * * 



Leaves bifoliate ; leaflets scabrous. 



23 Z. PROSTRA'TUM (Thunb. prod. app. 189.) leaflets scabrous; 

 stem decumbent ; joints hairy. % . G. Native of the Cape of 

 Good Hope. Flowers yellow ? 



Prostrate Bean-caper. Fl. July, Aug. Clt. 1810. PL pros- 



trate. 



24 Z. TRIDENTA'TUM(MOC. et Sesse, fl. mex. icon. ined. D. C. 

 prod. 1 . p. 706.) leaves almost sessile ; leaflets obovate, villous ; 

 petals and scales of stamens 3-toothed at the apex. Tj . G. 

 Native of Mexico. Petals yellow. Filaments purple. Fruit 

 very hairy, and perhaps 5-seeded. 



Three-tootlied-petelled Bean-caper. Shrub. 



* * Leaves pinnate. 



25 Z. PINNA' TUM (Nees in Schlecht. Linnaea. 5. p. 48.) 

 smooth ; leaves pinnate, with 4-5 pairs of leaflets on a narrow- 

 winged rachis, obliquely-lanceolate ; stipulas small, triangular, 

 with white jagged margins ; flowers large, solitary or twin, on 

 short pedicels. T? . S. Native of Asia ? 



Pinnate-leaved Bean-caper. Shrub. 



26 Z. MINIA'TUM (Nees in Schlecht. Linnaea. 5. p. 49.) like 

 the preceding, but differs in the leaflets being 1-2 pairs, and in 

 the leaflets being obovate and obtuse, as well as in the stipulas 

 being larger and obtuse. Jj . G. Native of Asia, towards Bok- 

 hara on low hills, near Agetma. 



Vermilion Bean-caper. Shrub. 



27 Z. PORTULACOIDES (Nees in Schlecht. Linnaea. 5. p. 50.) 

 leaves pinnate, with 1-2 pairs of leaflets ; flowers solitary at the 

 wings of the bud ; leaflets oblique, obovate, obtuse, and rather 

 emarginate ; stipulas large, semicircular ; flowers apetalous ; 

 filaments with fringed scales, adnate to their base ; peduncles 

 longer than the petioles, fj . G. Native of the Cape of Good 

 Hope. 



Portulaca-like Bean-caper. Shrub. 



f An anomalous 3-leaced species, which probably should be 

 removed from the genus. 



28 Z. ? LANATUM (Willd. spec. 2. p. 564.) leaves trifoliate ; 

 leaflets papillose beneath ; stem flexuous, with woolly joints. I/ . 

 S. Native of Sierra Leone. Filaments a little dilated at the 

 base. Styles 5. Capsules opening at the base, 5-celled, 5- 

 seeded. Therefore this plant is perhaps a proper genus. 



Woolly Bean-caper. PI. ? 



Cult. Zygophyllum is a genus of herbaceous plants and shrubs, 

 bearing very pretty flowers. The greenhouse, stove, and frame 

 species will thrive in a mixture of loam, peat, and sand ; and 

 cuttings of the perennial and shrubby kinds will root freely 

 in a pot of sand under a hand-glass, but as a few of them 

 ripen their seeds this will be unnecessary. The annual species 

 should be sown in pots in the same kind of soil, and placed in a 

 hot-bed, where they ifiay remain until they have seeded, or they 

 may be removed to the greenhouse. Z. Fabago is the only 

 hardy herbaceous kind ; it will grow well in any light soil, in a 

 dry situation, otherwise it is apt to rot ; it is only to be increased 

 by seeds, which sometimes ripen in this country ; these require 

 to be sown in a pot, and placed in a frame, and when the plants 

 are about 4 inches high, they may be planted out in the open 

 border in a warm, dry, sheltered situation. 



VII. GUAI'ACUM (Guaiac is the South American name 

 of the tree). Plum. gen. t. 17. Lin. gen. no. 518. D. C. prod. 

 1. p. 706. Andr. Juss. in mem. mus. 12. p. 456. t. 15. no. 5. 



LIN. SYST. Decdndria, Monogynia. Calyx deeply 5-parted 

 into unequal segments. Petals 5, unguiculate. Stamens 10 ; 

 filaments naked. Ovary tapering into a stipe at the base, 

 2-5-angled, 2-5-celled. Style 1, short, with an acute stigma. 

 Capsule on a very short stipe, rather fleshy, 2-5-angled, 2-5- 

 celled, containing only one seed in each cell from abortion, ovoid, 

 smooth, fixed to the axis, pendulous. Albumen cartilaginous, 

 chinky. Embryo almost straight, with thickish cotyledons. 

 Trees with very hard wood. Leaves abruptly-pinnate, with 

 twin stipulas at their base. Peduncles axillary, 1 -flowered. 

 Flowers usually blue. 



1 G. DU V BIUM (Forst. prod. no. 186.) leaves with one pair of 

 oblong-lanceolate blunt leaflets. Tj . S. Native of the island 

 of Tongatabu, in the South Seas. 



