2 8 Cruciferae. 



AR'ABIS HIRSU'TA (91). Hairy Rock-Cress. 6—8. Pods 1^—2 in. 

 (88) slender very numerous crowded in a long raceme, leaves hispid, 

 cauline ones semiamplexicaul, flowers small white. 



Xl.—BARBAREA. 



Pod 4-angled, stem angular, leaves pinnatifid, flowers small yellow, seeds 

 in one row, cotyledons accumbent. 



BARBARE'A VULGA'RIS (95) Yellow Rocket. 5—8. Radical 

 (80) leaves lyrate, upper leaves toothed, style distinct, pod short, thicker 

 than the pedicel. Damp places. 



BARBARE'A BR^'COX. Early Winter-Cress. 4—10. Radical leaves 

 (84) lyrate, upper cauline leaves pinnatifid with narrow segments, style very 



short, pod long, scarcely thicker than the pedicel. Roadsides. A 



garden escape, 



XII. —NASTUR TIUM. 



Pod nearly cylindrical, tapering, valves convex, nerveless, seeds in a 

 double row, calyx spreading. 



Flowers white, N. officinale. 



Flowers yellow, 156 



156 Pod \ in. long, ... ... N. sylvestre. 



156 Pod \ in. long, 157 



157 Pod curved, N. palustre. 



157 Pod straight, N. amphibium. 



NASTUR'TIUMOFFICINA'LE(io9). Common Water-Cress. 5—10. 



(76) Leaves pinnate, lower leaves large, terminal leaflets large and round, 

 flowers white, petals twice as long as the calyx, pod very slightly 

 curved. Brooks. 



NASTURTIUM SYLVES'TRE (59). Creeping Yellow-Cress. 6—8. 



(77) Root creeping, petals yellow twice as long as the sepals, leaves 

 pinnate, leaflets lanceolate cut, pod straight. 



NASTURTIUM PALUS'TRE (79). Marsh Yellow-Cress. 6—10. 



(78) Root fibrous, petals not longer than the sepals, leaves pinnatifid, 

 flowers yellow, pod curved. 



Nastur'tium amphib'ium (44). 6—9. Leaves entire, toothed or pinnatifid, 



(79) petals twice as long as the sepals, flowers yellow, pod ovoid straight. 



[M. Rg. N. Tb. L. C. CI. St. 



XIII. —SIS YMBRIUM. 



Calyx equal at the base, slightly spreading, pod linear, seeds in one 

 row, cotyledons incumbent. 

 Flowers yellow, 158 



Flowers white, S. Thalianum. 



158 Leaves runcinate, S. officinale. 



158 Leaves bipinnatifid, S. Sophia. 



SISYM'BRIUM OFFICINA'LE (107). Common Hedge Mustard. 



(113) 6 — 7. Stem I — 2 ft. Pods subulate hairy, close-pressed to the stalk, 



leaves runcinate hairy, flowers small pale yellow. Waste places. 



