CRUCIFEILE. XCII. SAVIGNYA. XCIII. SCHOUWIA. XCIV. PSYCHINE. XCV. ZILLA. XCVI. MURICARIA. 255 



base. Stamens free. Style short, tetragonal. Seeds numerous, 

 very much compressed, with broad margins. An annual smooth 

 branched herb, with oval bluntly-toothed radical leaves, which 

 are narrowed out into the petiole, and narrow entire stem ones. 

 Racemes opposite the leaves. Flowers small, pale-violet. 



1 S. .fliGYPTfACA (D. C. syst. 2. p. 283.) Q. H. Native 

 of Egypt in the sand about the Saqqarah Pyramids. Lunaria 

 parviflora, Delile, ill. fl. aegyp. p. 19. desc. 104. t. 35. f. 3. 

 Farsetia parvifl6ra, Spreng. syst. 2. p. 871. Root perpendi- 

 cular. Petals entire. 



Egyptian Savignya. Fl. in its native country in the winter. 



Cult. This pretty little annual is well adapted for ornament- 

 ing rock-work, where the seeds should be sown, or they may be 

 sown in the open border in a light sandy soil. 



Tribe XIV. 



PSYCHI'NE^! (plants agreeing with Psycliine in many im- 

 portant characters,) or ORTHOPLO'CEjE (see sub-order III.) 

 ANGUSTISE'PTJJ (angustus, narrow, and septum, a parti- 

 tion ; dissepiment narrow.) D. C. syst. 2. p. 643. prod. 1. p. 

 224. Silicic with keeled (f. 47. j.} or navicular valves, and with 

 a very narrow dissepiment. Seeds compressed. Cotyledons 

 folded together (f. 45.f.j.). A very distinct tribe, bearing fruit 

 almost like those of Thlaspi, Capsella, or /Ethionema, and with 

 flowers and cotyledons like Brdssica. 



XCIII. SCHO'UWIA (in honour of J. Fred. Schouw, a 

 Danish botanist.) D. C. syst. 2. p. 643. prod. 1. p. 224. 



LIN. SYST. Tetradynamia, Siliculosa. Silicic oval ; valves 

 with a narrow wing running through the whole length of the 

 back. A branched, annual, smooth herb. Leaves and flowers 

 almost like those of Moricandia arvensis. Silicles like those of 

 Thlaspi. Style and seeds like those of Psycliine. 



1 S. ARABICA (D. C. syst. 2. p. 644.) O- H. Native of 

 Arabia Felix, on argillaceous humid mountains near Mor. Su- 

 bularia purpiirea, Forsk. fl. aegyp.-arab. p. 117. Psycliine 

 Arabica, Spreng. syst: 2. p. 880. Thlaspi Arabicum, Vahl. 

 symb. 2. p. 76. Flowers rose-purplish, at first corymbose, but at 

 length racemose. Leaves referable to those of Moricandia arvensis, 



Arabian Schouwia. Fl. ? PI. 3 to foot. 



Cult, The seed of this pretty annual will only require to be sown 

 in the open ground. A light, sandy, moist soil will suit it best. 



XCIV. PSYCHI'NE (from ^M, psyche, a butterfly ; be- 

 cause of the pods being furnished with wings like the butterfly.) 

 Desf. atl. 2. p. 69. t. 148. D. C. syst. 2. p. 645. prod. 1. 

 p. 224. 



LIN. SYST. Tetradynamia, Siliculosa. Silicle triangular, nar- 

 rowed at the base, with the valves winged on the back, at the 

 end (f. 47. j.). An annual, hispid, branched herb. Leaves ob- 

 long or obovate, toothed ; cauline ones alternate, cordate, stem- 

 clasping, with auricles ; radical ones narrowed into the stalk. Ra- 

 cemes opposite the leaves, elongated. Bracteas leafy, situated 

 under the pedicels. Flowers white, with dark veins. 



1 P. STYLOSA (Desf. atl. 2. p. 69. t. 148.) O- H. Native 

 of Mauritania, near Mayane, on the edges of fields. Thlaspi 

 Psycliine, Willd. spec. 3. p. 443. P. Numidica, Spreng. syst. 2. 

 p. 880. Shaw.specim.no. 91. icon. Pods large, 3 lines long 

 without the style, and 7 or 8 lines broad. 



Long-styled Psychine. Fl. Apr. May. Clt. 1822. PL 1 foot. 



Cult. This curious annual only requires to be sown in the 

 open border. A light, sandy soil suits it best. 



Tribe XV. 



Zl'LLElE (plants agreeing with Zllla in important charac- 

 ters,) or ORTHOPLO'CEjE (See Sub-Order III.) NUCA- 

 MENTA V CE/E (nucamentum, a catkin ; shape of pods.) D. C. 

 syst. 2. p. 646. prod. 1. p. 224. Silicle indehiscent, ovate, or 

 globose, 1 -celled, 1 -seeded (f. 47. .), with indistinct valves 

 (f. 47. i.). Seeds globose. Cotyledons folded together, (f. 45. f.j.) 



XCV. ZI'LLA (the Arabic name of the plant) Forsk. desc. 

 121. D. C. syst. 2. p. 646. prod. 1. p. 224. 



LIN. SYST. Tetradynamia, Siliculosa, Silicle 2-celled ; cells 

 1 -seeded. A smooth, somewhat glaucous plant ; at length be- 

 coming suffruticose, much branched ; branches whitish ; younger 

 ones leafy; older ones leafless, stiff, divaricate, spinescent. 

 Leaves few, oblong, toothed. Racemes few-flowered, spinescent 

 at the apex. Pedicels filiform, short, bractless. Flowers dis- 

 tant, violaceous, almost like those of Moricandia arvensis. 



1 Z. MYAGROIDES (Forsk. aegyp. descr. 121. no. 74 and 75. 

 icon. t. 17. A.) Tj . F. or H. Native of Egypt, in the deserts. 



Var. a, macroctirpa (D. C. syst. 2. p. 646.) pods smooth. 

 Bftnias spinosa, Lin. mant. 96. Gaert. fruct. 2. p. 290. t. 142. 

 f. 2. Vent. hort. malm. t. 16. Myagrum spinosum, Lam. diet. 

 1. p. 570.no. 13. Native of Lower Egypt, about Cairo. 



Var. /3, mkrocdrpa (D. C. syst. 2. p. 647.) pods with rough 

 ribs. Native of Upper Egypt. Perhaps a proper species. 

 The leaves of this plant are boiled and eaten by the Arabs, like 

 those of Cabbage. 



Myagrum-like Zilla. Fl. March. Clt. 1816. PL 2 feet. 



Cult. This is rather a curious plant, and although it is always 

 treated as a frame shrub, it is nevertheless hardy enough to stand 

 the winter in a dry, warm, south border. A light, dry, sandy 

 soil suits it best. It may be either increased by young cuttings 

 planted in sand under a hand-glass, or by seeds. 



XCVI. MURICA'RIA (from muricalus, full of prickles ; 

 pods beset with prickles.) Desv. journ. bot. 3. p. 159. t. 25. f. 2. 

 D. C. syst. 2. p. 647, prod. 1. p. 225. 



LIN. SYST. Tetradynamia, Siliculosa. Silicle 1-celled, 1- 

 seeded, beset with prickles (f. 47. '.). Seed inserted laterally. 

 Petals equal. A procumbent, many-stemmed herb. Leaves 

 pinnate-lobed, alternate. Racemes opposite the leaves or ter- 

 minal. Flowers white. 



1 M. FROSTRA'TA (Desv. journ. 1. c.) O- H. Native of the 

 north of Africa, in sandy places, and in the kingdom of Tunis, 

 near Cafsa. Bunias prostrata, Desf. atl. 2. p. 76. t. 150. My- 

 agrum prostriltum, Poir. suppl. 2. p. 48. Laelia prostrata, 

 Pers. ench. 2. p. 185. Calepina prostrata, Spreng. syst. 2. p. 

 850. Petals double the length of calyx. Style very short and 

 thickish. 



Trailing Muricaria. Fl. Ju. Jul. Clt. 1821. PL } to 1J foot. 



Cult. This plant is not worth cultivating, except in botanic 

 gardens. The seeds only require to be sown in the open ground. 

 A light sandy soil suits it best. 



XCVII. CALEPFNA (meaning unknown.) Adans, fam. 2. 

 p. 423. D. C. syst. 2. p. 648. prod. 1. p. 225. 



LIN. SYST. Tetradynamia, Siliculosa. Silicle almost glo- 

 bose, 1 -celled, 1 -seeded. Seed pendulous from the top of the 

 pod. Outer petals somewhat larger than the inner ones. Co- 

 tyledons incumbent, curved, truncate, somewhat folded together, 

 with inflexed margins. A smooth, erect, annual herb. Radical 

 leaves rosulate, on short stalks, pinnate-parted; lower lobes 

 small, 2 or 3 on each side, terminal one large, oblong, or orbi- 

 cular, blunt ; cauline leaves sessile, oblong, entire, sagittate with 

 acute auricles. Racemes opposite the leaves, elongated ; pedicels 

 bractless, filiform. Flowers white. 



