Dentaria. XIII. CRLrCIFER^E. 167 



G. A. DEN-TATA. Torr. & Gray. 



Plant somewhat scabrous ; radical lis. obovate, petiolate, unequally and 

 sharply dentate ; caulinc ones oblong, amplexicaul ; ^c^. minute, spatulate, as 

 long as the sepals ; stig. subsessile ; silique short. — (I) River banks. Western 

 States! Stem slender^ ascending, 1 — 2f high. Petals white, with a purplish 

 tinge. Siliques 1' in length. Apr. 



16. CARD AMINE. 



Gr. KapSia, heirt, iajtaoi, to strengthen ; from its stomachic propeitiea. 



Calyx a little spreading; silique linear, with flat, veinlcss valve?, 

 narrower than the dissepiment, and often opening clastically ; stigma 

 entire ; seeds not margined, with a slender funiculus, 0=. — Mostly %■. 

 Fls white. 



1. C. HiRSUTA. (C. Pennsylvanica. Muhl.) Pennsylvanian Cardamine. 

 Lis. pinnate or lyrately pinnatifid ; Ifls. entire, or .sparingly repand-den- 



ticulate, those of the radical "leaves oval-oblong, of the cauline linear-oblong, 

 the terminal one longest, about 3-lobcd ; pet. oblong-cuneate ; siliqucs erect, 

 with a very short stvle. — ® or % A variable plant common in wet places 

 throughotit the U. S. " Stem 8 — IG' high, mostly smooth. Leaflets 2 — 5 pairs, 

 4 — IS'' long, smoothish. Fls. small. Siliques about 1' long, 12 — 18 seeded. Jn. 



2. C. ViRGiNicA. (C. hirsuta. /?. Hook.) Virginian Cardamine. 



Lis. hTately pinnate ; Ifls. with a single tooth on one or both sides ; pet. 

 nearly twice as long as the calyx ; roc. strictly erect ; stig. sessile ; silique long, 

 incurved, erect. — (g) A small and delicate species, much resembling the last, 

 but probably distinct. Found on dry hill-sides, Vt. Ct. to Ky. and Mo. Stem 

 4—^' high, slender, leafy. Leaflets 2 — 4 pairs with a trilobate odd one, oval, 

 1 — 2" in length, those of the upper leaves 3 — 5" long, but very narrow. Petals 

 small. Siliques filiform, 1' long. Jn. 



3. C. PRATENSis. Field Cardamine. 



St. erect or decumbent, simple ; Ivs. pinnately 7 — 15-foliate ; Ifts. petio- 

 late, subentire, lower ones suborbicular, upper linear-lanceolate ; stij. distinct. — 

 % Swamps, N. Y. to Arctic Am. Whole plant smooth. Stem round, striate, 

 10— IG' high. Leaves few, U— 2' long including the petiole. Leaflets of the 

 root-leaves 1—3" diam., of the cauline 3 — 6" by f". Flowers large, few, in a 

 terminal raceme. Petals white or rose-color. Siliques nearly 1' in length, 

 erect. Apr. May. 



4. C. ROTUNDiFOLiA. Michx. (C. rhomboidea. DC. Arabis. Pers. Nutt.) 

 Glabrous or .somewhat hairy; Ivs. entire or vepand-tooiheA, radical ones 



orbicular-ovate, on long petioles, cauline ovnl or oblong-lanceolate, petiolate 

 below, sessile above, dentate. — % Another variable species with rather large, 

 white or reddish flowers. Stems 6 — 12' high, angular or striate, mostly erect. 

 Leaves of root 10 — 18" diam., on petioles 2 — 4' long. Racemes about 3' long, 

 12 — 20-flowered. Petals 2 — 4 times as long as the calyx. Siliques spreading, 

 6—12" long. Apr. May. 



Q. T. &G. /?/. mostly tuberiferous ; st. erect; Imecr stem Ivs. rhomhoid-oval; 

 pet. large. — Wet meadows. Conn. Vt. Dr. Robbins. 



0. T. &. G. Rt. mostly fibrous ; st. decumbent, branching ; Ivs. all petio- 

 late; fet. smaller, purplish. — Shaded springs and rivulets, N. Y. 

 4. C. BELLiDiFOLTA. (C. rotttndifolia. Bw. not Michx.) 

 Lis. smooth, radical ones orbicular-ovate, nearly entire, petiolate ; cau- 

 linc ones entire or 3-lobed; siliques erect. — A minute species on the summits of 

 the White Mts. Abel Slorrs ! &c., also Arc. Am. to Calif. Stem IJ— 3' high. 

 Leaves mostlv radical, broadly oval or ovate, i' long, on petioles as long as 

 the stems. Fascicles corjmibose, each of 3 or 4 white flowers. Petals oval, 

 obtuse, about twice as long as the calyx. Jl. 



17. DENTARIA. 



Lat. liens, a tooth : from the tooth like projections of the rhizoma. 



Sepals converging ; silique lanceolate, with flat, veinless, revolute 



