CRUCIFER^. 21 



C. Pod short, dehiscing throughout its length, much compressed at right angles 



to the septum, which is hence very narrow. (Pod indehiscent in Senebiera.) 

 TRIBE VI. LEPim NE.ffi. Cotyledons incumbent, straight incurved or 



longitudinally folded. (Flowers white.) 



Pod dehiscent, many-seeded 15. Capsella. 



Pod didymous, indehiscent, 2-seeded 16. Senebiera. 



Pod dehiscent, 2-4-seeded 17. Lepidium. 



TRIBE VII. THLASPID'EJE. Cotyledons accumbent, straight. Pods on 



horizontal pedicels. (Flowers white.) 



Pod notched. Petals equal. Filaments without scales 18. Thlaspi. 



Pod ovate. Petals very unequal. H ilaments without scales 19. Iberis. 



Pod oblong. Petals unequal. Filaments with basal scales. . . . 20. Teesdalia. 

 Pod oblong. Petals equal. Filaments without scales 21. Hutchinsia. 



D. Pod indehiscent or with very short valves which cover a few of the seeds only. 

 TRIBE VIII. ISATI'DE^ffi. Pod indehiscent, 1 -celled, 1 -seeded ...21*. Isatis. 

 TRIBE IX. CAKILI'NE^:. Pod transversely 2-jointed, lower joint seedless 



or 2-celled, 2-valved, 2- or more-seeded, upper joint 1-2-celled. (Affinity 



with Brassicece. ) 



Lower joint slender, seedless; upper globose, 1-seeded 22. Crambe. 



Lower joint 2-edged, 1 -celled ; upper ensiform, 1-seeded 23. Cakile. 



TRIBE X. RAPHA'NEJE. Pod elongate, 1-celled, many-seeded ; or trans- 

 versely jointed, the joints 1-2-celled, cells 1-seeded 24. Raphanus. 



1. MATTHI'OLA, Br. STOCK. 



Herbs, sometimes shrubby, downy with stellate hairs. Leaves entire or 

 sinuate, Flowers large. Sepals erect, lateral saccate at the base. Petals 

 with long claws. Pod elongate, terete or compressed ; septum thick, 

 often 2-3-nerved ; stigmatic lobes erect, conniving, often thickened or 

 horned at the back. Seeds 1 -seriate, compressed, winged or margined ; 

 cotyledons accumbent. DISTRIB. Europe, N. Africa, W. Asia, one is S. 

 African ; species 30. ETYM. After Matthiolus, an Italian physician. 



1. M. inca'na, Br. ; shrubby, erect, hoary, leaves oblong-lanceolate 

 entire, pod eglandular. 



Sea-cliffs eastward of Hastings (now extinct), Ventnor and Freshwater, Isle 

 of Wight; a denizen, Watson; fl. May-June. -Stem 1-2 ft., branched. 

 Leaves rarely obscurely toothed. Raceme 1-2 in. Flowers 1-2 in. diam., 

 purple to violet. Pod 2-4 in., i in. broad. Seed orbicular, winged. DISTRIB. 

 W Europe, Canaries, Levant. The "Queen Stock" of gardens, where it is 

 treated as an annual or biennial. 



2. M. sinua'ta, Br. ; herbaceous, diffuse, woolly or downy, leaves linear- 

 obovate or -oblong, lower sinuate-toothed, pod muricate and glandular. 

 Shores of Wales, Cornwall, Devon, S.E. and S.W. Ireland, Channel Isles ; . 



fl. May-Aug. Stem 12 ft., branched above. Root-leaves petioled. 

 Raceme 1-3 in. Flowers 1 in. diam., pale lilac, fragrant at night. Pod 

 3-4 in., .| in. broad; seeds winged. DISTRIB. W.Europe, N.Africa, Levant. 

 Taste alkaline. 



1*: CHEIRAN'THUS, L. WALLFLOWER. 



Herbs or under-shrubs, pubescent with appressed 2-partite hairs. Leaves 

 entire or toothed. Flowers large, racerned, yellow or purple. Sepals erert, 



