28 6. CRUCIFERJE. 



2. D. muralis (DC.) ; st. herbaceous simple hispid and leafy at 

 the base, 1. almost glabrous ovate -lanceolate sinuate-dentate or 

 pinnatifid, pet. roundish ovate with a short claw. E. B. 10SO. 

 Sinapis Sm. Pedicels as long as the flowers. Pet. abrupt or 

 emarginate. L. often blunt, never very acute, usually all col- 

 lected about the base of the stem. Branches all springing from 

 the base. Waste ground. A. VIII. IX. 



Suborder II. Latisepta. Tribe IV. Alyssinea. 



16. ALYSSUM Linn. Madwort. 



1. A. calycinum (L.); herbaceous hoary with starry pubes- 

 cence, 1. obovate-lanceolate attenuate below, pods orbicular stel- 

 late-pubescent, calyx persistent, filaments all toothless, shorter 

 ones from between 2 setaceous processes. E. B. S. 2853. R. 

 ii. 18. Cells of the pod 2-seeded. Pet. yellow, becoming at 

 length white. Grassy commons, S. ; ploughed land, E. See 

 Phytol. ii. 284. A. V. VI. E. S. 



[Farsetia incana (R. Br.) ; seeds 6 or more in each cell, pods 

 pubescent subventricose. Near Lewes.] 



17. KONIGA Adans., R. Br. 



[*1. K. maritima (R. Br.); procumbent, hairs bipartite, 1. 

 linear-lanceolate acute, pods oval pointed glabrous. E. B. 1/29. 

 R. ii. 18. Alyssnm Sm. St. rather woody below. Fl. white, 

 sweet-scented. Naturalized near the sea, P. VIII. IX.] 



18. DRABA Linn. Whitlow-grass. 



1. D. aizoides (L.); scape leafless glabrous, I. linear rigid 

 acute keeled glabrous ciliate, stam. equalling the slightly notched 

 petals, style as long as the breadth of the pouch. E. B. 1271. 

 R. ii. 15. Fl. bright yellow. L. fringed with rigid hairs densely 

 collected into cushion-like tufts. On rocks and walls at Pennard 

 Castle near Swansea. P. III. IV. E. 



2. .D. rupestris (R. Br.); scape leafless or with 1 or 2 leaves 

 pubescent, /. lanceolate flat stellately pubescent, stam. shorter 

 than the slightly notched petals, style short. E. B. 1338. D. 

 hirta Sm. Pouch oblong-oval, slightly hairy. St. very short, 

 branched, each branch bearing a dense tuft of leaves and 1 3 

 short scapes. Fl. small. L. mostly entire. Tops of the Highland 

 mountains, rare. P. VII. S. I. 



3. D. incana (L.) ; stem-l. several, 1. lanceolate stellately pu- 

 bescent toothed, pet. twice as long as the calyx entire, pouch 



