278 NATURAL HISTORY OF PLANTS. 



pressed ; embryo herbaceous ; cotyledons emarginate conduplicate ; 

 radicle incumbent. — An annual branching herb ; leaves pinnatisect, 

 lobes entire or pinnatisect ; racemes 1 leaf-opposed; pedicels ebracteate 

 slender, when fruiting nutaut {Europe, and Middle Asia 2 ). 



VI. THLASPlDEiE. 



a. IberidinE-E. — Cotyledons usually decumbent. 



127. Thlaspi Dillen. — Sepals equal at base, erect. Petals equal or 

 subequal obovate. Stamens (5, free exappendiculate. Siliqua short, 

 laterally compressed, oblong, obcordate or obcuneate, acuminate or 

 more rarely acute at apex ; style more or less elongated erect ; apex 

 stigmatose emarginate ; valves keeled or winged, more rarely wing- 

 less {Carpoceras) ; septum narrow membranous. Seeds <x>, or more 

 frequently 2 in each cell, immarginate. — Annual or perennial herbs, 

 glabrous or glaucous, more rarely pilose ; radical leaves rosulate 

 entire or dentate ; cauline oblong hastate-auriculate ; flowers ebract- 

 eate in racemes sometimes corymbose-scapose (Temp crate, Alpine, 

 and Arctic regions, especial/j/ of Northern Hemisphere, South America 

 and Australia) . Seep. 208. 



12S. Iberis L. 3 — Sepals equal at base, or slightly saccate at base. 

 Petals 4, unequal ; anterior 2 much larger than posterior. 4 Stameus 

 0, free ; filaments exappendiculate, rather thick. Placentary glands 

 small or ; carpellary in pairs internal to smaller stamens, connate 

 to each other or free. Siliqua flat-compressed at base, ovate or 

 rotundate, at apex entire or emarginate : valves keeled, winged or 

 marginate ; septum narrow, 2-lamellate ; style short or long ; apex 

 stigmatose, subcapitate or emarginate. Seeds solitary in each cell, 

 immarginate descending ; radicle accumbent dorsal, ascending or sub- 

 horizontally superior. — Glabrous herbs or undershrubs, rather fleshy 



1 Rather large, reddish white. 3 Gen., n. 804. — DC, Prodr., i. 178. — 



2 Spec. 1. C. annua. — C. Felice DC., loc. Spach, Suit, a Buffun, vi. 559. — Endl., Gen., 

 cit.—BoiSS., Fl. Or., i. S<d1.— Vella annua L.. n. 4887.— B. H., Gen., 92, n. 117. 



Spec,, 895. — G.ERTN., Fruct., ii. 886, t. 111. — A Wherehy the genus is distinguished from 



Sm., Engl. But., t. 1442. Thlasjn, but the flowei-s and Iruit are the same. 



