GENERA. lir 



Tribe VIII. BRASSICE^. 



73. SIWAPIS. Cal. spreading (in the flower). Pod nearly cylindrical, somewhat beaked. 

 Seeds globose, their taste pungent : those in each cell in a single row. p. 22. 



74. BKASSICA. Cal. of El. erect. Pod nearly cyb'ndi-ical, somewhat beaked. Valves 

 obtuse, with one nerve and intermediate veins. Seeds nearly globular, in one row. In most of 

 the species the L. are lyrate ; the ultimate divisions forming by far the greater fart of the L. 

 p. 23. 



75. ERUCASTBUM. Cal. of El. erect. Pod linear : Valves convex. Seeds oblong, 

 in a single row. L. 'pinnatifid or cuneate. Ft. yellow, p. 24. 



The characters of this and the two preceding genera are very unsatisfactory ; and I must con- 

 fess I have disposed the species rather according to habit than to the somewhat obscure and 

 uncertain artificial characters. 



76. DIPLOTAXIS. Cal. spreading. Pod compressed : Valves with a single nerve. Seeds 

 imperfectly in two rows. p. 24. 



77. ERUCA. Cal. spreading, equal at base. Pod terete : Valves with one prominent nerve. 

 Seeds regularly in two rows. Annual, erect. L. lyrafo-pinnatifid. p. 25. 



78. MOmCAWDIA. Cal. of El. erect, with two protuberances at base. Pod unequally 

 4-edged. Seeds in 2 rows, somewhat winged. Fl. purple, p. 25. 



Tribe IX. SISYMBRIFM 

 A. Stigma a shield or disc with a thickened margin. 



79. SISYMBRIUM. Pod linear : Valves 3-nerved. Seeds in a single series. Seed- 

 stalk filiform, p. 25. 



80. ALLIARIA. Pod long, terete : Valves 3-nerved. Seeds in a single row. Seed-stalk 

 flattened^ vringed. L. undivided, cordate, p. 26. 



81. ERYSIMUM. Cal. erect. Pod 4-edged : Valves with a single nerve. Seeds in one 

 row. Seed-stalk filifojm. Upright and somewhat rigid plants, with undivided and generally 

 narrow L. p. 26. 



82. HUGUEUIIflA. Cal. somewhat spreading. Pod 2-edged : Valves each with a single 

 nerve. Seeds in one row. L. pinnate, p. 27. 



83. SYREI^IA. Pod 4-edged : Valves each with a single nerve. Seeds in 2 rows. L. 

 linear, quite entire, p. 27. 



84. BRAYA. Pod terete or somewhat compressed : Valves 1-nerved. Seeds in 2 rows. Fr. 

 in a raceme, p. 27. 



B. Stigma of 2 oblong or oval lobes. 



85. HESPERIS. Pod linear, many-nerved. Seeds in a single row. L. elliptical or ovato- 

 lanceolate, undivided, p. 27. 



C. Stigma conical. 



86. MALCOMIA. Pod linear, hairy or woolly. Seeds in a single row, or somewhat ir- 

 regular. L. undivided. Fl. purplish, p. 28. 



Tribe X. ARABIBEM 

 A. Stigma Z-lobed. 



87. MATTHIOLA. Pod terete or somewhat compressed, with 2 or 3 hunches or horns at 

 the top {in M. sinuata this is hardly the case). Two Sep. gibbous at base. Fl. purplish. 

 p. 28. 



88. CHEIRANTHUS. Pod compressed or 2-edged, with an elevated nerve on each 



i 2 



