Class XV. TETRADYNAMIA. 537 
1401. Alyssum. Silicle orbicular or elliptical, with valves flat or convex in centre. Seeds 2-4 in each cell. 
Calyx equal at base. Petals entire. Some the stamens toothed. 
1402. Clypeola. Silicle orbicular, 1-celled, 1-seeded, with flat valves. Calyx equal. Petals entire. Stamens 
toothed. 
1403. Peltaria. Silicle orbicular, 1-celIed, 1-4-seeded, with flat valves. Seeds two in each cell : funiclss 
adhering to the dissepiment. 
1404. Pctrocallis. Silicle sessile, oval, with flattish valves. Seeds two in each cell : funicles adhering to the 
dissepiment. 
1405. Draba. Silicle sessile, oval or oblong, with flat or convex valves. Seeds many, not edged. Calyx 
equal Petals entire. All the stamens without teeth. 
140o. Erophila. Silicle oval or oblong, with flat valves. Seeds many, not edged. Calyx equal. Petals 
2-parted. Stamens without teeth. 
1407. Cochlearia. Silicle sessile, ovate-globose or oblong, with ventricose valves. Seeds many, not edged. 
Petals entire. Stamens without teeth. 
*** Silicle opening, with a very nai-row dissepiment, and keeled navicular valves. Seeds oval, sometitnes 
margined. Cotyledons flat, accumbent, contrary to the dissepiment. Thlaspide^, Dec. 
t Cells of silicle 2-?nany.seeded. 
1408. Thlaspi. Silicle emarginate at end, with navicular valves, winged at back. Cells two, many- 
seeded. 
1409. Capsella. Silicle triangular, cuneate at base, with navicular valves, not winged. Cells many-seeded. 
1410. Hutchinsia. Silicle elliptical, with navicular valves, not winged. Cells 2-seeded, rarely many- 
seeded. 
1411. Teesdalia. Silicle oval, emarginate at end, with navicular valves and 2-seeded cells. Stamens having 
a scale inside at their base. 
f t Cells of silicle \-seeded. 
1412. Jberis. Two outer petals largest. Silicle compressed, truncate, emarginate. 
1413. Biscutella. Silicle flat, biscutate, with the cells laterally united to the axis. Style long, persistent. 
Embryo inverted. 
**** Silicle not opening, with concave indistinct valves, and sometimes with scarcely any trace of a dissepifnenf. 
Seeds oval, very few. Cotyledons flat, accinnbent, parallel with dissepiment. Euclidie^, Dec. 
1414. Euclidium. Silicle drupaceous, ovate, with manifest sutures. Style subulate. Cells 1-seeded. 
1415. Ochthodium. Silicle coriaceous, subglobose. Stigma sessile. Dissepiment thick. Cells l-seeded. 
***** Silicic opening lengthwise, with concave valves, bearing internally transverse horizontal dissepiments 
separating the seeds. Seeds twt margined. Cotyledons flat, accumbent, parallel with the dissepimont. 
AxASTATicEiE, Dec. 
1416. Anastatica. Silicle ventricose, with valves bearing an appendage outside at the end. 
****** Silique or silicle separatiiig across into l-2-celled, l-2-seeded joints. Seeds not edged. Cotyledons 
flat, accumbent, parallel ivith the dissepiment when there is any. Cakiline^, Dec. 
1417. Cakilc. Silicle 2-jointed, compressed : the upper joint ensiform. Seeds solitary in the cells : upper 
erect ; lower pendulous. 
1118. liapistrnm. Silicle 2-jointed : the upper joint ovate, rugose. Seeds solitary in the cells : upper erect , 
lower pendulous. 
1419. Chorispora. Silique roundish,with many equal joints. Seeds all pendulous. 
2. Cotyledons flat, incumbent. Radicle dorsal. Seeds ovate, not margined. (0||) NotorhizejE, ^ec. 
* Silicle 2-celled, opening lengthwise, with concave or keeled valves. Seeds ovate or oblong, not margined. 
Cotyledons flat, incumbent, contrary to the dissepiment. SisymbriEjE, Dec. 
1420. Malcomia. Silique roundish. Stigma simple much pointed. 
1421. Hesperis. Silique roundish, or about 4-cornered. Stigmas 2, erect, conniving. Calyx bisaccate at 
base. 
1422. Sisymbrium. Silique roundish, sessile upon the torus. Stigmas 2, somewhat distinct or connate in a 
head. Calyx equal at base. 
1423. Alliaria. Silique roundish, 4-cornered, with prominent nerves. Calyx lax. 
1424. Erisymum. Silique 4-cornered. Calyx closed. 
** Silicle with concave valves, and with a dissepiment elliptical in its greatest diameter. Seeds ovate. 
Cotyledons flat, incumbent, contrary to dissepiment. Cameline^e, Dec. 
1425. Camelina. Silicle obovate or subglobose, with ventricose valves and many-seeded cells. Style 
filifo-m. 
142G. Neslia. Silicle subglobose, with concave valves, 1-celled, 1-seeded, indehiscent. 
»** Silicle with a very narrow dissepi?nent, and with keeled or very convex valves. Seeds solitary or few in 
the cells, ovate, not margined. Cotyledons flat, incumbent, parallel with the dissepiment. LEPiDiNE.ai, 
Dec. 
1427. Coronopus. Silicle twin. Valves ventricose or subcarinate, scarcely dehiscent, 1-seeded. 
1428. Lepidium. Silicle ovate or subcordate, with carinate or rarely ventricose valves, opening with 
1-sceded cells. 
1429. Mthionema. Silicle oval, generally emarginate, with navicular valves, and 1-2-seeded cells. Larger 
stamens either united or toothed. 
**** Silicle with indistinct or indehiscent keeled valves, 1-celled, 1-seeded, with an obliterated dissepiment. 
Seeds ovate, oblong. Cotyledons flat, incumbent, apparently in the same direction as the dissepiment should be. 
IsATiuE/E, Dec. 
143(\ Jsatis. Silicle elliptical, flat, 1-celled, 1-seeded, with carinate navicular valves, which are scarcely 
dehiscent. 
1431. Myagrum Silicle compressed, almost cuneate, with two empty hollows at end, and at base 1-cellcd, 
1-seeded. 
3. Cotyledons incumbent, folded together, or plaited lengthwise through their middle, and enwrapping the 
radicula. Style generally enlarged, ivith a cell and seed at its base. Seeds generally globose, never margined. 
{()>>) Oin HOPLocE^, Dec. 
* Silique ivith valve? opening lengthwise, and a linear dissepi?nent. Cotyledons folded together. 
Brassice^, Dec. 
1432. Brasslca. Silique roundish. Style small, short, obtuse. Seeds in one row. Calyx closed. 
1433. Sinapis. Silique roundish, with nerved valves. Style small, short, acute. Seeds in one row. Calyx 
spreading. 
1434. Moricandia. Silique 4-cornered, sowewhat 2-edged. Seeds in two rows. Calyx bisaccate at base. 
1435. Diplotaxis. Silique compressed, linear. Seeds in two rows. Calyx equal at base. 
1436. Eruca. Silique roundish. Style large, ensiform or conical. Seeds in one row. Calyx equal at banc 
