CRUCIFER^:. LXXIV. REDOWSKIA. LXXV. APHRAGMUS. LXXVI. TAUSCHERIA. LXXVII. ISATIS. 



223 



late. Jj . H. Native on Mount Lebanon. Thlaspi carneum, 

 Russel in Schrad. journ. 1. p. 426. A little shrub with filiform 

 branches. Flowers flesh-coloured, larger than any other species 

 of this genus. 



Long-styled $!thionema. PL -J. to | foot. 



8 JE. POLYGAIOIDES (D. C. syst. 2. p. 562.) pods 1 -celled, 

 1 -seeded, opening, emarginate at each end ; stem shrubby at 

 the base; leaves oblong-linear. J? . H. Native of the island of 

 Scio. A very small shrub, branching from the base, with the 

 habit of Poly gala saxatilis. Leaves somewhat fleshy. Flowers 

 unknown, but perhaps purplish. 



Polygala-like .Slthionema. PL 2 or 3 inches. 



9 JE. MONOSPE'RMUM (R. Br. in hort. kew. ed. 2. vol. 4. p. 

 80.) pods 1 -celled, 1 -seeded, indehiscent, emarginate at the top ; 

 stem herbaceous ; leaves oval or obovate. $ . H. Native of 

 Spain. A little herb with hardish branches. Leaves blunt, co- 

 riaceous. Flowers purplish, a little larger than those of JEthio- 

 nema saxatilis. Larger stamens toothed. 



One-seeded lthionema. FL Jul. Aug. Clt. 1778. PL | to | ft. 



Cult, The shrubby kinds of this genus should be kept in pots, 

 which should be well drained with potsherds and treated like 

 other alpine plants. A mixture of sand, loam, and peat suits 

 them best, and cuttings planted under a hand-glass in the same 

 kind of soil will root readily, or they may be increased by seeds. 

 Some of the more hardy species may be planted on rock- work, 

 which by their dwarf growth they are well adapted for. The 

 annual and biennial species may either be sown on rock-work or 

 in the front of the flower-border. A light dry soil suits them 

 best. All the species are worth cultivating. 



LXXIV. REDO'WSKIA (to the honour of Redowski, a Rus- 

 sian botanical collector). Cham, et Schlecht. Linnaea. 1. p. 33. 

 t. 2. 



LIN. SYST. Tetradynamia, Siliculbsa. Calyx pilose, of 4 

 ovate obtuse sepals, with white margins. Petals equal, roundish- 

 obovate, entire, twice the length of the calyx. Filaments tooth- 

 less, smooth. Silicic smooth, inflated, globose ; style half a line 

 long, crowned by a 2-lobed stigma, 1 -celled, from the dissepiment 

 being wanting, 2-valved ; valves with a nerve running through 

 their middle. Seeds 8-1 2. Cotyledons unknown. A perennial 

 plant with a thick root and pinnate radical leaves, with pinnatifid 

 leaflets, which are white from short tomentum ; cauline leaves pin- 

 nate with toothed leaflets, but becoming more simple as they 

 ascend. Stem ascending, Flowers on pedicels white, at first 

 in corymbs, but at length lengthening out into racemes. 



1 R. SOPHLEFO'LIA (Cham. 1. c. t. 2.) !(.. H. Native of the 

 north-eastern parts of Asia. 



Sophia-leaved Redowskia. PL % to ffoot. 



Cult. An inconspicuous plant, which will grow under any cir- 

 cumstance. Not worth cultivating, unless in botanic gardens. 



Tribe X. 



ISATI'DEJi (plants agreeing with Isatis in some characters) 

 or NOTORHI'ZE.E (see sub-order II.) NUCAMENTA'CE^E 

 (nucamentum, a catkin ; shape of pods). D. C. syst. 2. p. 

 563. prod. 1. p. 209. Silicle with indistinct or indehiscent 

 keeled valves (f. 47. d.) 1-celled, 1-seeded, from the dissepiment 

 having vanished. Seeds ovate-oblong. Cotyledons flat, in- 

 cumbent, apparently in the same direction as the dissepiment 

 should be. 



LXXV. APHRA'GMUS (from a priv. <t>pay^os, phrag- 

 mos, a dissepiment ; silicles without a dissepiment). Andrz. 

 in litt. D. C. prod. 1. p. 209. 



LIN. SYST. Tetradynamia, Siliculbsa. Silicle lanceolate, 

 acute, with flat, nerved valves, without a dissepiment. Seeds 



disposed in two rows, pendulous. Cotyledons incumbent, thick. 

 Perhaps this genus belongs more properly to Camelinece. 



1 A. ESCHSCHOLZIA'NUS (Andrz. in litt. D. C. prod. 1. p, 210.) 

 Native of the Aleutian Islands. 



Eschscholz's Aphragmus. PL 1 foot. 



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

 collections. It only requires to be sown in the open ground. 



LXXVI. TAUSCHE'RIA (Ignat. Fred. Tauscher, Professor 

 of Botany at Prague, author of several botanical works). Fisch. 

 in B.C. syst. 2. p. 563. prod. 1. p. 210. 



LIN. SYST. Tetradynamia, Siliculbsa. Silicle oval, almost 

 boat-shaped, 1-celled, 1-seeded, with navicular, indehiscent 

 valves. Seed pendulous, oblong. Annual, erect, smooth, 

 branched, herbs, with filiform stems. Lower leaves oblong, nar- 

 rowed at the base ; cauline ones sessile, sagittate, entire, glau- 

 cous. Racemes opposite the leaves, or as if they were ter- 

 minal upon the abortive branches, elongated, bractless. Flowers 

 small, white. 



1 T. LASIOCA'RPA (Fisch. in litt. icon. D. C. syst. 2. p. 563.) 

 pods villous on the convex part. Q, H. Native of the Kir- 

 ghisian steppe at Lake Inderskoe. The whole herb, except the 

 fruit, is smooth, not unlike Isatis nana. 



Woolly-podded Taucheria. FL Ju. Jul. Clt. 1824. PL J ft. 



2 T. GYMNOCA'RPA (Fisch. in litt. icon. D. C. syst. 2. p. 564.) 

 pods smooth, (p. H. Native with the preceding. Very like 

 T. lasiocdrpa, but differing in the leaves being smaller, and the 

 pods smooth. 



Naked-podded Taucheria. FL May, June. Clt. 1820. PL! ft. 



Cult. These plants are not worth cultivating, except in 

 botanic gardens. They only require to be sown in the open 

 ground or on rock-work, for which, from their low growth, they 

 are well adapted. 



LXXVII. ISATIS (from ioa.fa, isazo, to render equal ; the 

 plant was believed to destroy by its simple application, all rough- 

 ness and inequalities of the skin). Bauh. pin. 113. Lin. gen. 

 no. 824. Lam. ill. t. 554. D. C. syst. 2. p. 564. prod. 1. p. 210. 



LIN. SYST. Tetradynamia, Silkulosa. Silicle elliptical, flat, 

 1-celled, 1-seeded, with keeled navicular valves, which are 

 scarcely dehiscent. Seed pendulous, oblong. Tall, erect, 

 branched, annual or biennial herbs. Stems round. Lower leaves 

 stalked, ovate, or ovate-oblong; upper ones sessile, sagittate, 

 with acute auricles, all more or less glaucous, entire, or a little 

 toothed. Racemes terminal, many-flowered, disposed in lax 

 panicles, erect, elongated ; pedicels filiform, bractless, erect, at 

 the time of flowering corymbose, afterwards deflexed, usually a 

 little thickened under the pod. Flowers yellow. All the species 

 of this genus furnishes a blue dye, which is used by dyers in 

 various ways. This dye is perfectly like indigo, and is often 

 used as a substitute for it, especially that obtained from Isatis 

 tinctoria. 



SECT. I. SAMERA'RIA (from samera, the seed of the elm ; 

 winged like it). D. C. syst. 2. p. 565. prod. 1. p. 210. Desv. 

 jour. bot. 3. p. 161. t. 24. f. 6. Silicle oval or orbicular, 

 indehiscent, girded by a broad, leafy, membranous wing. 



1 I. GARCI'NI (D. C. syst. 2. p. 565.) pods rather pedicellate, 

 broadly marginate, obovate, cuneated at the base, very blunt at 

 the top, with 2 tubercles. $ . H. Native of Persia, Deless. 

 icon. sel. 2. t. 77. Peltaria Garcini, Burm. fl. ind. 139. t. 46. 

 f. 1 . Perhaps a proper genus. 



Garcin's Woad. PL 1 foot. 



2 I. ARME'NA (Lin. spec. 936.) pod orbicular, cordate at the 

 base, broadly marginate, pointed with the style. O-H. Native 

 of Armenia in dry meadows on the margins of rivulets, and in 



