CRTJCIFER&. 255 



Stamens 6 ; filaments free toothless. Siliqua (finally buried in the 

 earth), 2-jointed ; joints longitudinally 2-celled ; lower oblong or 

 turgid, 2-valved ; valves hemispherical scarcely deciduous ; seeds oo, 

 2-seriate ; upper joint subequal or usually smaller, subglobose or 

 ovoid, indehiscent ; cells 2, 1 -seeded ; style terete; stigmatose 

 capitate rostrate. Seeds different in the 2 joints ; in upper obliquely 

 ascending or descending ; cotyledons conduplicate ; in lower de- 

 scending or subtransverse ; one cotyledon nearly flat, the other 

 dorsally convex. — A low, very depressed, subacaulescent herb ; root 

 thick subligneous ; leaves rosulate elongated pinnatilobate ; flowers 

 subradical solitary pedunculate ; peduncles scapiform, when fruiting 

 contorted-deflexed 1 {Sardinia, Corsica"). 



IV. ISATIDE^E. 



68. Isatis T. — Sepals equal at base. Petals imbricate. Stamens 

 6, 4-dynamous free toothless. Siliqua linear-oblong, ovate orbiculate 

 or oblong-cuneate, indehiscent, woody horny or osseous in centre ; 

 margin coriaceous thickened or foliaceous ; style very short papillose- 

 stigmatose ; seed descending from top of cell, immarginate ; embryo 

 rather fleshy; cotyledons incumbent, very rarely accumbent. — Annual 

 or 2-ennial herbs, erect branching, glabrous glaucous, pubescent, or 

 more rarely tomentose ; leaves entire ; cauline sagittate ; flowers in 

 lax usually branching racemes ; pedicels ebracteate slender, when 

 fruiting, deflexed {Europe, North and Central Asia, North of Africa). 

 Seep. 197. 



69. Pachypterygium Bge. 3 — Sepals equal at base, patulous. 

 Petals contracted at base. Stamens 6, free toothless. Siliqua small 

 elliptical, depressed in centre, coriaceous, thickened suberous at 

 margin, indehiscent ; style very short ; apex stigmatose emarginate ; 



"A genus of doubtful relations; allied to de Fr., i. 155. — Erucaria hypogcea Viv.— 



Chorispora ?" (B. H., loc. cit.), placed by many Rapist-urn hypogceum Dub., Bot. Gall., 54. 



authors at foot of Cakilinece. 3 In Linncea, xviii. 155. — B. H., Gen., \)4>, n. 



2 Spec. 1. M. hypogcea J. Gay, loc. cit. — 130. — Pachypteris Kae. & Kie., in Bull. Mosc. 



Mob., Fl. Sard., i. 104.— Geen. & Gode., Fl. (1842), i. 159 (nee R. Be.). 



