24 THE ORUCIFER FAMILY. 
Pod with a longitudinal partition, generally opening in two valves . 2 
Pod not dehiscent, with one seed, or with several seeds placed end to end and 
separated by transverse partitions (LoMENTOSA) . - ° ° « a 
see at least 3 or 4 times as long as broad (Stu1qvosz) é . : ° a ty vam 
Pod not 3 Hoes as long Be broad tS oe a (ne ‘ a ; s . a 
¢ Flowers white, purple, or red (never ye Ow ° ‘ ° 
3 SILIQuosz ( Flowers yellow ; F . eid aa en 
Petals large, on long claws, purple or "rarely white. Stigmas 2, very short, 
45 erectand parallel . . ; 2 - 6 
Petals small, or the claws scarcely longer than the calyx. Stigmaentire . 6 
Leaves hoary and soft. BueraS thickened at the base. (Cotyledons 
accumbent) . : % : 4 F 5 1. MATTHIOLA, 
Leaves green, with coarse “hairs. ye not thickened. (Cotyledons 
incumbent) . : : : ; d 3 : 7. HESPERIS. 
Leaves all undivided : , : ; F : : = A 
Leaves, at least the lower ones, pinnate 5 2 : : : ; : Sao 
{ Leaves all stalked, large and broad . ; : : : ; . 9. ALLIARIA. 
Upper leaves sessile or auricled . ~ 5. ARABIS. 
4. NASTURTIUM. 
ee in two distinct rows in each ‘cell. Pod rather ‘short and curved. 
Seeds blended into one row in each cell. Pod sahahes: long; orslender . 9 
9 ; Stem-leaves undivided, narrowed at the base . - . 56. ARABIS; 
Leaves all pinnate or divided : . 6. CARDAMINE. 
‘All the leaves entire, or toothed only. Plant ‘pale or hoary with minute 
0 appressed hairs . 11 
Leaves, at least the lower or radical ‘ones, pinnate or lobed at the pase. 
Plant glabrous, or hairy with rough or spreading] hairs " 12 
11 Pod flattened. Cotyledons accumbent E : eee CHEIRANTHUS. 
Pod nearly quadrangular. Cotyledons incumbent . : . 10. ERYsIMUM. 
»Cotyledons accumbent. Pods ending’in a style seldom above a line long. 
Plant glabrous, with lyrate or pinnate leaves ‘ 13 
Cotyledons incumbent. Valvesof the pod opening to close under, the stigma. 
12, _ Plant hairy or glabrous, the leaves deeply pinnate. : SISYMBRIUM. 
Cotyledons conduplicate. Pod ending in-a beak or conical pat 1 to 6 
lines long. Leaves ee UaE pinnate, or lyrate, or the BpDeE ones un- 
divided . ; 11, BRAsSsIca. 
13 { Pods not 6 lines long, on slender ‘spreading pedicels : . 4, Nasturtium. 
Pods an inch or more, on stiff short pedicels . 3. BARBAREA. 
Pod globular or oblong, or compressed. ‘The valves flat or 
convex, parallel to the broad partition 
Pod compressed or flattened laterally, at right angles to the 
narrow partition. The valves pti ca - 
14 SILICcULOSZ 
15§ Pod nearly globular or cylindrical. ; ; ; : F . 16 
Pod evidently compressed or flattened 2 ‘ ; ; - 4 . 20 
16 f Minute aquatic plant with subulate leaves : y : . 16, SuBULARIA. 
Terrestrial plants with flattened leaves . ‘ : ‘ : a7 ts os 
17 f Flowers white. Cotyledonsaccumbent . ° : : : . 4 18 
Flowers yellow . : . in pve 
Plant glabrous. Pod globular or shortly ovoid ; 12, ‘ CocHLEARIA, 
18) Plant hoary or rough with short hairs. Pod somewhat flattened or oblong 
13. ALYSSUM. 
, Leaves pinnately lobed, or, if entire, narrowed at the base. (Cotyledons 
| accumbent) . . : - ° . 4, NAsTURTIUM. 
19¢ Leaves linear, in dense radical tufts. Flower-stem leafless . 14. DRABA. 
Leaves entire or toothed, the upper ones stare ca and Neue? Spe stem. 
(Cotyledons incumbent) : : : . CAMELINA. 
20 Petals deeply divided. . (Dwarf annual) \ : : ; . - 14 Drasa. 
; Petals entire or notched s A : ; : A 2 «ae 
21 { Pod nearly orbicular . . : : : : : 13, AnyssuM. 
Pod considerably longer than broad . é f ; 2 . 14. DRABA, © 
2 { Two or more seeds in each cell of the pod . . ‘ . ; : ‘ . 23 
One seed only ineachcell . - ° , : : ‘ . : ‘ ot: ae 
93 { Leavesentire. . oe ed ig AN eae ieee 
Leaves more or less pinnate . ; : : 25. 
Pod obcordate or wedge-shaped, not ,winged. (Cotyledons incumbent) 
{Pod winged all round. (Cotyledons accumbent) ‘17. THUASPI, 
24 
21. CAPSELLA. 
