16 6. CRUCIFERE. 
green glaucous. FI. whitish, afterwards pale purple; lower pet. 
Imear widened at the end, sides of its haft inflexed.—Fields in 
Kent, Essex, Camb. <A. VIII. IX. E. 
5. F. Vaillantii (Lois); sep. very minute triangular, fruitstalks 
longer than the obovate pointed fr. and twice longer than the bract, 
Its. narrow flat.—E. B.S. 2477. R. iii. 1.—Foliage greyish green 
glaucous. Fl. purplish, afterwards whitish; lower pet. spathu- 
late, sides of its haft scarcely inflexed—Fields. A. VI.—IX. 
Order VI. CRUCIFERAS. 
Sep. 4. Cor. cruciform of 4 petals. Stam. 6, tetradynamous ; 
2 shorter opposite the lateral petals. Ovary free, with marginal 
placentas meeting in the middle. Stigmas 2, opposite to the pla- 
centas (or rather, alternate with them, lobed and combining), 
Fruit a silique or silicle, the valves opposite the shorter stamens. 
Suborder I. SILIQUOS. 
Pod (silique) linear or linear-lanceolate, opening by 2 valves, 
dissepiment narrow but in its broadest diameter. 
Tribe I. ARABIDEAG. Cotyledons accumbent parallel to the 
dissepiment, radicle lateral, seed compressed. 
1. MarruroLta. Pod round or compressed. Stigma 2-lobed, 
lobes erect gibbous or horned at the back. 
to 
CHEIRANTHUS. Pod compressed or 2-edged, with an ele- 
vated longitudinal nerve upon each valve. Stigma 2-lobed, 
lobes patent. Seeds in a single row in each cell. 
3. Nasrurrrum. Pod subcylindrical; valves convex, nerveless. 
Stigma capitate. Seeds irregularly in 2 rows. 
4. Barsarza. Pod terete; valves convex with a prominent 
longitudinal nerve. Stigma capitate. Seeds in a single row. 
5. Turritis. Pod compressed; valves slightly convex with 
a prominent longitudinal nerve. Stigma capitate. Seeds in 
2 rows. 
6. Arasis. Pod compressed; valves nearly flat with a pro- 
minent longitudinal nerve, or with numerous longitudinal 
veins. Stigma obtuse. Seeds in a single row. 
7. Carpamine. Pod compressed; valves flat, nerveless. 
Stigma capitate. Seeds in 1 row; seed-stalk simple, filiform. 
8. DENTARIA. Pod lanceolate, compressed ; valves flat, nerve- 
less. Stigma capitate. Seeds in a single row; seed-stalk 
dilated, winged. 
