32 FLOWERING PLANTS OF THE RIVIERA 



Pods 4 angled. Seeds oblong BARBAREA. 



Pods flat, valves not elastic, i nerved ARABIS. 



Pods flat, valves elastic. Funicle filiform CARDAMINE. 



Pods flat, valves elastic. Funicle dilated DENTARIA. 



Tribe II. SISYMBRIE^. Seeds usually i seriate ; radicle incumbent, straight. 

 Flowers white, yellow, or lilac. 



Stigma obtuse. Glabrous or with spreading hairs SISYMBRIUM. 



Stigma obtuse. Hairs adpressed, 2-3 furcate ERYSIMUM. 



Stigma decurrent on the style. Hairs spreading HESPERIS. 



Stigma conical. Leaves entire MALCOMIA. 



Tribe III. BRASSICE^E. Seeds 1-2 seriate ; radicle incumbent, longitudin- 

 ally folded or very concave. Flowers yellow, or white, or purple. 



Pods terete or angled. Seeds i seriate BRASSICA. 



Pods compressed. Seeds 2 seriate, compressed DIPLOTAXIS. 



Pods nearly cylindrical, slightly beaked. Seeds i- seriate SINAPIS. 



Pods terete. Seeds 2 seriate. Calyx spreading ERUCA. 



Pods 4 angled. Seeds 2 seriate, winged. Calyx erect. Flowers violet 



MORICANDIA. 



B. Pods short (except sometimes in Draba), dehiscing throughout their length, 

 broad, flat, or turgid, not compressed at right angles to the septum. Flowers 

 white or yellow. 

 Tribe IV. ALYSSINE/E. Seeds 2 seriate ; radicle accumbent. 



Petals entire. Pods oblong, flat, many seeded DRABA. 



Petals 2 cleft. Pods oblong, flat, or turgid EROPHILA. 



Petals entire. Pods circular, few seeded ALYSSUM. 



Petals white. Pods obovate, 6 seeded. Style very short KERNERA. 



Petals yellow. Pods obovate, several seeded. Style short CAMELINA. 



Petals purple, entire. Pods very large, flat, strongly rimmed LUNARIA. 



Petals yellow. Pods with flat margin, i celled, i seeded CLYPEOLA. 



Tribe V. CAMELINE^. Seeds 2 seriate ; radicle incumbent. 



Tall herbs, stem-leaves sessile, auricled. Pods obovate CAMELINA. 



C. Pods short, dehiscing throughout their length (except in Coronopus), com- 

 pressed at right angles to the septum, which is hence very narrow. 

 Tribe VI. LEPIDINE^E. Cotyledons straight, incurved, or longitudinally 

 folded, radicle incumbent. Flowers white. 



Pods dehiscent, many seeded CAPSELLA. 



Pods didymous, indehiscent, 2 seeded CORONOPUS. 



Pods dehiscent, 2-4 seeded LEPIDIUM. 



Pods oval, notched, keeled and broadly winged. Flowers mauve, in a corymb 



AETHIONEMA. 



Tribe VII. THLASPIDE7E. Cotyledons straight, radicle accumbent. Pods on 

 horizontal pedicels. Flowers white, yellow, or mauve. 



Pods notched. Petals equal. Filaments without scales THLASPI. 



Pods notched. Petals very unequal. Filaments without scales IBERIS. 



Pods oblong. Petals unequal. Filaments with basal scales TEESDALIA. 



Pods oblong. Petals equal. Filaments without scales HUTCHINSIA. 



Pods of 2 round lobes, or disks, each with i seed. Flowers yellow 



BlSCUTELLA. 



D. Pods indehiscent, or with very short valves which cover a few of the 



seeds only. 

 Tribe VIII. ISATIDE^E. Pods indehiscent, i celled, i seeded. 



Pods tongue-shaped, compressed, bordered, pendulous ISATIS. 



Pods nearly globose. Radicle incumbent NESLIA. 



Pods turgid, leathery. The 4 longer filaments winged CALEPINA. 



Pods tetragonous, crested. Cells 4, in pairs. Cotyledons spiral BUNIAS. 



Pods nearly triangular, with 2 empty cells above a fertile one. 

 Cotyledons channelled. Seed pendulous MYAGRUM. 



