882 CAPSELLA. [CLASS XV. ORDER I. 



radical ones tufted, ovate, obtuse, on a broadish footstalk, those of the 

 stem sessile, oblong, acute, arrow-shaped at the base. Inflorescence 

 a terminal many flowered raceme. Calyx small ovate concave equal 

 pieces. Corolla of four oblong obtuse or notched white petals. 

 Stamens with slender Jilamenis and ovate purple anthers. Fruit a 

 triangular heart-shaped siliqua, smooth, two celled, each cell with 

 three or four ovate tawny small seeds. Style about half as long again 

 as the lobes of the notch. 



Habitat. — Limestone pastures in the North of England ; Yorkshire, 

 Derbyshire, CEernarvonshire. Glen Isla, Clove, Scotland. 



Perennial ; flowering in June and July. 



GENUS VII. CAPSEL'LA.— De Cand. Shepherd's Purse. 



Nat. Ord. Crucif'er^. Juss. 



Gen. Char. Silicula laterally compressed, triangular, wedge-shaped, 

 of two many seeded cells, valves sharply keeled. Filaments 

 simple. Cotyledons incumbent. — (c Fig. 2, page 872.) — Name 

 the diminutive of Capsula, a little capsule, or casket. 



1. C. Bur'sa-Pastoris, De Cand. (Fig. 10] 8.) Common Shepherd^s 

 Purse. Radical leaves pinnatifid, with triangular acute slightly 

 toothed lobes, the upper linear, undivided ; siliqua triangular, wedge- 

 shaped, notched. 



Hooker, British Flora, ed. 4. vol. i. p. 247. — Lindley, Synopsis, p. 

 3J. — Thlaspi Bursa- Pastoris, Linn. — English Botany, t. 1485. — 

 English Flora, vol. iii. p. 173. 



/S, minor. Leaves entire. 



y. sinuata. Leaves sinuato-dentate. 



j. pinnatifida. Leaves all pinnatifid. 



E. apetela. Flowers without petals, stamens ten, or only part of the 

 petals changed into stamens. 



Root small, tapering, with slender branched fibres. Stem erect, 

 rough, with pubescence, branched and leafy, from six to twelve inches 

 high. Leaves a palish green, rough with hairs, the radical ones nu- 

 merous, spreading, petiolated, variously lobed or cut, rarely entire, the 

 upper ones sessile, linear, with arrow-shaped lobes at the base, entire or 

 toothed. Injiorescence terminal racemes of numerous flowers, elongated 

 and lax in fruit. Calyx of four small ovate concave nearly equal 

 pieces, with a thin white membranous margin, often purplish at the 

 back. Petals four, obovate, with a short claw, sometimes all or part 

 changed into stamens^ which are as long as the calyx, with simple 

 filaments and small ovate yellow anthers. Fruit a triangular wedge- 

 shaped siliqua, notched at the top, with a short obtuse style between 

 the lobes, smooth, two celled, sharply keeled, but not winged at the 

 back, each cell with about five small brown ovale seeds. 



