DENTARIA. XIil. CRUCIFER A. 167 
6. A. peNTATA. Torr. & Gray. 
Plant somewhat scabrous ; radical lvs. obovate, petiolate, unequally and 
sharply dentate; cauline ones oblong, amplexicaul; pet. minute, spatulate, as 
long as the sepals; stig. subsessile; siligue short—@ River banks, Western 
States! Stem slender, ascending, 1—2f high. Petals white, with a purplish 
tinge. Siliques 1’ in length. Apr. 
16. CARDAMINE. . 
Gr. kapd.a, heart, dazaw, to strengthen ; from its stomachic properties. 
Calyx a little spreading; silique linear, with flat, veinless valves, 
narrower than the dissepiment, and often opening elastically ; stigma 
entire; seeds not margined, with a slender funiculus, O—.—Mostly 4. 
Fils white. 
1. C. uirsttra. (C. Pennsylvanica. Muhl.) Pennsylvanian Cardamine. 
Lvs. pinnate or lyrately pinnatifid ; /f’s. entire, or sparingly repand-den- 
ticulate, those of the radical leaves oval-oblong, of the cauline linear-oblong, 
the terminal one longest, about 3-lobed; pet. oblong-cuneate; siliques erect, 
wiih a very short style— or 2| A variable plant common in wet places 
throughout the U.S. Stem 8—16/ high, mostly smooth. Leaflets 2—5 pairs, 
4—12” long, smoothish. Fls. small. Siliques about 1/ long, 12—18 seeded. Jn. 
2. C. Vireinica. (C. hirsuta. @. Hook.) Virginian Cardamine. 
Las. lyrately pinnate; /fts. with a single tooth on one or both sides; pet. 
nearly twice as long asthe calyx; rac. strictly erect; stig. sessile ; stlique long, 
incurved, erect—@) 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—8’ hich, 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. praTEeNsIs. Feld Cardamine. 
St. erect or decumbent, simple; Jvs. pinnately 7—15-foliate ; /fts. petio- 
late, subentire, lower ones suborbicular, upper linear-lanceolate ; sty. distinct.— 
2 Swamps, N. Y. to Arctic Am. Whole plant smooth. Stem round, striate, 
10—16’ high. Leaves few, 13—2/ long including the petiole. Leaflets of the 
root-leaves 1—3” diam., of the cauline 3—6” by 3”. Flowers large, few, in a 
terminal raceme. Petals white or rose-color. Siliques nearly 1’ in length, 
erect. Apr. May. 
4. C. rorunpiroiisa. Michx. (C. rhomboidea. DC. Arabis. Pers. Nutt.) 
Glabrous or somewhat hairy; Jvs. entire or repand-toothed, radical ones 
orbicular-ovate, on long petioles, cauline oval or oblong-lanceolate, petiolate 
below, sessile above, dentate-—2| 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. 
a. T.&G. Rt. mostly tuberiferous ; st. erect; lower stem lvs. rhomboid-oval ; 
pet. large—Wet meadows, Conn. Vt. Dr. Robbins. 
8B. T. & G. Rt. mostly fibrous; st. decumbent, branching; Jvs. all petio- 
late; pet. smaller, purplish.—Shaded springs and rivulets, N. Y. 
4. C. BeLuipironia. (C. rotundifolia. Bw. not Michz.) 
Lvs. smooth, radical ones orbicular-ovate, nearly entire, petiolate; cau- 
line ones entire or 3-lobed; szliques erect—A minute species on the summits of 
the White Mts. Adel Storrs! &c., also Arc. Am. to Calif. Stem 14—3/ high. 
_ Leaves mostly radical, broadly oval or ovate, }/ long, on petioles as long as 
the stems. F'ascicles corymbose, each of 3 or 4 white flowers. Petals oval, 
obtuse, about twice as long as the calyx. Jl. 
17. DENT ARIA. 
Lat. dens, a tooth ; from the tooth-like projections of the rhizoma. 
Sepals converging ; silique lanceolate, with flat, veinless, revolute 
a 
— = ee ee ee eee 
