TETRADYXAMIA SILIQUOSA 383 



Stem \ to 2 feet high, rather stout, terete, striate, smooth and glaucous, somewhat 

 branched at summit. Radical leaves 3 fourths of an inch to near 2 inches Ion?, 

 and i third to 3 fourths of an inch wide, often purplish, obovate, or oblong, obtuse, 

 serrate-dentate, sparingly ciliate, and the upper surface sprinkled with short ap- 

 pressed hairs, subsessife, or tapering to a broad petiole : stem-leaves 2 to 4 or » 

 inches long, and 1 third of an inch to an inch wide, sessile, sagittatcauriculato, 

 very smooth, thin and membranaceous, pale green and glaucous, the lower ones 

 remotely serrate, or repand-denticulate, the upper ones entire, or obscurely re- 

 r-and. Racemes 3 or 4 to 8 or 10 inches long ; pedicels 1 fourth to 1 third of an 

 inch long, erect. Petals ochroleucous, oblanceoiate, obtuse, scarcely longer than 

 the calyx. Siliques an inch and half to 2 and a half inches long, (3 to 4 inches. 

 Bart.) linear, slender, often somewhat recurved, or spreading; valves flat, veined, 

 rarely nerved: style short. Seeds compressed, roundish-ovate, conspicuously 

 margined, reddish brown. 



Hab. Low grounds, along Brandywine: frequent. Fl. April-May. /^.June-July. 

 0&? Collected by D. Town-send Esq. in 1828. Unquestionably distinct from 

 the following,— though apparently doubted by Mr. Nutlall. 



3. A. Caxadensis. L. Radical leaves obovate- oblong, petiolate : 

 stem-leaves oblong-lanceolate, sub-acuminate, denticulate, sessile ; ped- 

 icels 3 times as long as the calyx, hairy, finally reflexed ; siliques sub- 

 falcate, pendulous. Beck, Bot. p. 30. 



A. falcata. Mx. Am. 2. /;. 31, Pursh, Am. 2. p. 437. Bart. Phil. 2. 

 p. 56. Bigel. Bost.p. 251. Florid. Cesir. p. 74. 



Canaihax Auabis. Vulgo — Sickle-pod. Turkey-pod. 



Root perennial ?- Stem 2 to 3 fret high, terete, smooth, or often sparsely hlrstit* 

 at the base, frequently purple, simple, sometimes with several axillary branding 

 near the summit. Radical leaves 1 to 2 or 3 inches long, obovate, or oblong, nar- 

 rowed to a petiole at base, often hirsute, dying early, and disappearing; stem- 

 leaves 1 to 3 inches long, and 1 fourth to 3 fourths of an inch wide, tapering at each 

 end, sessile, or subsessile, remotely denticulate, roughish-pubesccnt and ciliau 

 with short hairs. Raceme 3 or 4 to 8 or 10 inches long, simple (when thfcre ar« 

 branches, a raceme terminating each branch); pedicels about half an inch lone, 

 somewhat hairy, spreading when in flower, reflexed in the fruit. Calyx hairy. 

 Petals white, oblong-lanceolate, one half longer than the calyx. Siliques 2 to 3 

 inches long (3 to 5 inches, Ell.) and about 2 lines wide, pendulous, recurved, linear, 

 acuminate, veined, mostly ancipital, or the valves with a keel-like nerve. Seeds 

 compressed, ovate, roughish-punctatc, reddish brown, with a broad cellular 

 membranaceous margin, notched at the base, which is towards the apex of th* 

 fiilique. 



Ilab. Hilly woodlands: frequent. Fl. June. Ft. August. 



Obs. Three or four other species, as the genus is now constituted, hav« been 

 found in the U. States. 



317. CARDAMfNE. L. Xutt. Gen. 558. 

 [Greek, Kardia, the heart, and damao, to fortify; from its supposed virtues'.] 



Calyx closed, or somewhat spreading, equal at base. Petals ungui- 

 culate; border entire. Filaments without teeth. Silique linear, 

 compressed ; valves flat, nerveless, mostly separating elastically ; stylo 

 short. Seeds in a single series, not margined ; cotyledons accumbent ; 

 funiculus slender. 



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