30 BRITISH BOTANY. 



Nastfetifm. — Leaves pinnate or pinnatifid. Flowers yellow, rarely white ; 



sepals spreading. Seeds in 2-4 rows. 

 TuEElTiS. — Root-leaves toothed ; stem-leaves entire, clasping. Seeds in two 



rows. 



Cheiranthus, Brown. — Perennial half-shrubby plants, with 

 entire, oblong-lanceolate leaves, tapering at their base, with odo- 

 riferous yellow flowers. Sepals connivent, the lateral pair gib- 

 bous at their base. Lobes of the stigma curved outwards. Pod 

 linear, nearly four-angled, with convex valves, which have a pro- 

 minent longitudinal nerve. Seeds compressed, in one row. 



C. Cheiri, Lin. Wallflower. — e.b. 1934. l.b.s. 109. 

 A. ? C. 14. It is found between the latitude 50° and 58°, or fi'om 

 the British Channel to the Murray Frith, and from the Atlantic to 

 the German or British Ocean. 



Stem 12-18 inches high, shrubby and branched at the base; 

 branches angular, pubescent with appressed hairs. Leaves lan- 

 ceolate or oblong-lanceolate, tapermg at the base, thick or fleshy, 

 pale green beneath. Flowers odorous. Pods slightly pubescent. 



Per.; March-May. 



Var. a. fruticulosus, Lin. Petals more or less of a deep yellow 

 colour, not veined. — On old walls. In France it grows on cal- 

 careous rocks. Per. ; April-June. 



Var. y8. hortensis [C. Cheiri, Lin.). Petals veined or striped 

 with purple. — In gardens. A variety with very narrow petals is 

 found upon the walls of the Abbey of Bury St. Edmunds, Mr. 

 Babington. 



Matthiola, Br. — Herbaceous or half-shrubby plants, with 

 stellate (star-like) pubescence. Stems erect. Leaves simple, 

 toothed or sinuated. Sepals enlarged at the base. Petals en- 

 tire, equal. Stigma cleft, with two ovate, obtuse connivent lobes, 

 enlarged after flowering. Style short, thick, conical. Pod cylin- 

 drical or slightly compressed ; valves convex, with a dorsal nerve. 

 Placentas linear. Seeds in one row, round or ovate, compressed, 

 often wdnged, usually with a membranous border. 



M. incana, Br. Hoary Stock. — e.b. 1935. l.b.s. 110. 

 A. 2. C. 1. Lat. 50-51°. 



Root branched. Stem shrubby, erect, bushy, leafy, hoary, 

 about two feet high. Leaves lanceolate, rounded at the apex, 

 thick and leathery, with dense pubescence, tapering at the base. 

 Flowers large, purple ; petals with greenish claws. Pod 2-3 



