CRUCIFER^E. XXVIII. DISCOVIUM. XXIX. MENIOCUS. XXX. CLYPEOLA. XXXI. PELTARIA. 



181 



for ornamenting rock-work or the front of flower-borders ; they 

 are all very easily increased by seeds, which ripen in abundance. 

 The shrubby kinds are also easily increased by dividing the 

 plants at the root or by cuttings planted under a hand-glass, 

 which root readily. The annual sorts should be sown in the open 

 border or on rock-work. 



XXVIII. DISCO V VIUM (from Swos, discos, a disk ; valves 

 of pods keeled, in the disk ?) Rafin. in journ. phyt. vol. 89. anno. 

 1819. p. 96. D. C.prod. 1. p. 236. 



LIN. SYST. Tetradynamia, S'diculbsa. Silicle lenticular with 

 an entire dissepiment and keeled valves ; cells many-seeded. 

 Style permanent, crowned by a blunt stigma. Calyx closed. 

 An annual, erect, simple slender herb, with distant sessile, ob- 

 long, obtuse, entire leaves. Petals yellow, entire, wedge-shaped, 

 about equal in length with the calyx. An intermediate genus 

 between Alyssum and Thlaspi. 



1 D. OHIOTE'NSE (Rafin. 1. c.) O- H. Native of North 

 America, on the banks of the Ohio. 



Ohio Discovium. PI. -j foot. 



Cult. An inconspicuous annual plant, the seed of which only 

 require to be sown in the open border. 



XXIX. . MENIO V CUS (from p.i]vr), mene, the moon, and 

 OKKOS, okkos, an eye ; shape of seeds ?) Desv. journ. bot. 3. p. 

 173. D. C. syst. 2. p. 325. prod. 1. p. 165. 



LIN. SYST. Tetradynamia, Siliculosa. Silicle sessile, ellip- 

 tical, with flat valves. Seeds not margined, 6 or 8 in each cell. 

 Calyx at the base equal. Petals entire. Larger stamens toothed. 

 An annual herb, but nevertheless it is frutescent at the base ; 

 much branched, erect, greyish-velvety from stellate short hairs. 

 Leaves linear, entire. Racemes terminal ; pedicels filiform, 

 bractless. Flowers small, white. This genus is hardly distinct 

 from Adyseton, unless that there are never fewer than 6 seeds in 

 each cell, not 2 or 4 as in that genus, and with smooth silicles. 



1 M. LINIFOLIUS (D. C. syst. 2. p. 325.) leaves linear, blunt- 

 ish, quite entire. O- H. Native about Astracan among rub- 

 bish, and in cultivated land ; in Tauria and Caucasus, near Ta- 

 naim ; in Syria, between Aleppo and Mossul ; in Podolia and 

 Illyria ; in Spain, in the province of Valentia, in several 

 places, &c. Deless. icon. sel. 2. t. 42. Aly'ssum linifblium, 

 Steph. in Willd. spec. 3. p. 467. A. minimum, Pall. itin. 3. p. 741. 

 Meniocus serpyllifolius, Desv. 1. c. A. Draba, Bieb. from Desv. 

 journ. 1. c. A. Illyricum, Willd. enum. suppl. p. 44. A. lineari- 

 folium, Lag. clench, hort. madr. 1815. p. 9. Farsetia linifolia, 

 Andrz. cruc. ined. Petals white, a little longer than the calyx. 



Flax-leaved Meniocus. Fl. May, Jul. Clt. 1819. PI. i to \ ft. 



Cult. This little annual will answer well for rock-work, 

 where the seeds should be sown. 



XXX. CLYPE'OLA (from clypeus, a buckler; in allusion 

 to the form of the silicles.) Gaert. fruct. 2. p. 283. t. 141. f. 6. 

 D. C. syst. 2. p. 326. prod. 1. p. 165. Clypeola spec. Lin. and 

 Juss. 



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

 celled, 1 -seeded, with flat valves. Calyx equal at the base. 

 Petals entire. Stamens toothed. Seeds compressed. Small 

 annual herbs with the habit of Alyssum and Biscutella, erect or 

 diffuse 1 , greyish from short stellate hairs. Leaves oblong- 

 linear, entire. Racemes terminal, erect ; pedicels filiform, short, 

 bractless. Flowers small, yellow, or when old, whitish. 



SECT. I. IONTHLA'SPI (from tor, ion, a violet, and OXaui, 

 thlao, to compress ; that is to say, flat-seeded violet.) D. C. syst. 

 2. p. 326. prod. 1. p. 165. Silicles with ciliated margins, and 

 smooth or pubescent disks. 



1 C. IONTHLA'SPI (Lin. spec. 910.) stems diffuse, or ascend- 

 ant. 0. H. Native of Spain; south of France; Avergne; 

 Lower Vallais ; Italy ; Sicily ; Arcadia ; Iberia, near Tiflis ; and 

 in Persia, near Lenckeran, &c. &c. : growing on walls and in 

 sandy places ; also on gypsaceous and calcareous sterile hills. 

 Cav. icon. 1. p. 22. t. 32. f. 2. Boiss. fl. europ. t. 455. Desv. 

 journ. bot. 3. p. 161. t. 25. f. 7. Lam. ill. t. 560. f. 1. Fos- 

 selinia ionthlaspi, All. ped. no. 901. Clypeola monosperma, 

 Lam. fl. fr. 2. p. 462 and 484. Alyssum ionthlaspi, Clairv. herb, 

 val. 216. Flowers small, yellow. Ovary 1 -seeded. 



Flat-seeded Violet, or Common Treacle-Mustard. Fl. Mav, 

 Jul. Clt. 1710. PL 2 or 3 inches. 



SEC.T. II. O'RIUM (from ora, a brim or margin; silicles 

 toothed on the margins.) D. C. syst. 2. p. 327. prod. 1. p. 

 165. Silicles with toothed margins, and clothed with long, soft 

 hairs. 



2 C. ERIOPHORA (Cav. from Lag. in litt. D. C. syst. 2. p. 

 327.) stem erect, almost simple ; calyx permanent. H. Na- 

 tive of Spain, on hills, at Aranjuez. O'riumlanuginosum, Desv. 

 journ. bot. 3. p. 162. t. 25. f. 10. Alyssum eri6phorum, Pourr. 

 in Willd. enum. 2. p. 671. Vesicaria Ianugin6sa, Poir. diet. 8. 

 p. 572. Flowers small, when dry, whitish. Petals spreading, 

 permanent, hardly longer than the calyx. 



JFoo/-6eanng-TreacIe-Mustard. Fl. May, Jul. Clt. 1 820. 

 PI. | foot. 



SECT. III. BERGERE'TIA (John Pyramus Bergeret, who wrote 

 a Flora of the Pyrenees.) D. C. syst. 2. p. 328. prod. 1. p. 165. 

 Silicles with toothed margins, and echinated disks. 



3 C. ECHINA'TA (D. C. syst. 2. p. 328.) stem erect; calyx 

 deciduous. 0. H. Native of the Levant. Clypeola lasio- 

 carpa, Pers. ench. 2. p. 193. Bergeretia echinata, Desv. journ. 

 bot. 3. p. 161. t. 25. f. 9. Flowers small, yellow. Pods 1- 

 seeded. 



Var. /3, ramosissima (D. C. 1. c.) stem much branched ; leaves 

 oblong, covered with short stellate hairs. 



Echinated-podded Treacle- Mustard. Fl. May, Jul. PI. -j foot. 



Cult. These are pretty little curious annual plants ; well 

 adapted for rock-work, or the front of flower borders. They 

 only require to be sown where they are intended to remain. 



XXXI. PELTARIA (from TrcXrri, pelte, a small buckler ; 

 in allusion to the form of the silicles.) Lin. gen. no. 1083. Gaert. 

 fruct. 2. p. 383. t. 141. Desv. journ. bot. 3. p. 161. t. 24. 

 D. C. syst. 2. p. 328. prod. 1. p. 166. Bohatschia, Crantz, 

 aust. p. 5. t. 1. f. 1. 



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

 celled, l-(f 46. i.) 4-seeded, with flat valves. Calyx equal at the 

 base. Petals entire. Stamens toothless. Seeds pendulous, and 

 often solitary from abortion. Smooth, erect, perennial herbs, with 

 stalked, ovate, entire, radical leaves, and sessile sagittate stem- 

 clasping, cauline ones. Racemes many, almost disposed in co- 

 rymbs ; pedicels bractless, filiform, erect, at the time of flower- 

 ing, and when in fruit spreading or somewhat recurved. Flowers 

 small, white. 



1 P. ALLIA'CEA (Lin. spec. 910.) stem-leaves sagittate, stem- 

 clasping ; pods flat, smooth. "%.. H. Native of Austria, Croa- 

 tia, Transylvania, and Piedmont about Fenestrelles, &c. in 

 shady places. Jacq. fl. aust. t. 123. Boiss. fl. eur. t. 446. 

 Clypeola alliacea, Lam. diet. 2. p. 55. Clypfiola perennis, Ard. 

 spec. 26. t. 6. The whole plant when bruised smells strongly of 

 garlic. 



Garlic-scented Peltaria. Fl. May, Jul. Clt. 1601. PI. 1 to 2 ft. 



2 P. ANGUSTIFOLIA (D. C. syst. 2. p. 329.) lower stem-leaves 



