78 CRUCIFER^. Turhiti* • 



the stem. Calyx oblonw-campanulate. Petals a little exserted. Anthers 

 linear, longer than the filaments." Nutt. 



12. S. hyacinthnides rHook.) : glabrous ; leaves oblong-linear, acuminate; 

 petals spatulate-linear, tne limb reflexed ; filaments of the longer stamens 

 united by pairs. — Hook, in hot. mag. t. 3516. 



Texas, near San Felipe de Austin, Drummond ; near Fort Towson, 

 Arkansas, Dr. Leavenworth .' June.— (i) Stem simple or branching, 2-3 

 feet high. Leaves sessile, narrow below, but clasping. Flowers deep bluish- 

 purple. Sepals lanceolate, acuminate. 



5. TURRITIS. Dill.; DC. syst. 2. p. 211. 



Silique linear ; valves plane. Seeds in a double series in each cell. — 

 Flowers white or rose-color. 



1. T. glabra (Linn.): radical leaves petioled, toothed, pubescent with 

 spreading hairs; cauline ones ovate-lanceolate, clasping and sagittate, mostly 

 entire, glabrous and glaucous; siliques linear, elongated, strictly erect; pe- 

 tals scarcely longer than the calyx. — DC. prodr. 1. p. 142; Hook.ji. Bor.- 

 Am.\. ^.40? 



/?. 1 leaves all linear-lanceolate and glabrous ; radical ones remotely repand- 

 denticulate ; cauline entire ; lobes acute. 



Hudson's Bay to the Rocky Mountains. Shore of Lake Superior, Dr. 

 Pitcher! fi. Rocks, WatertoAvn, New-York ! May.— Stem 2 feet high, 

 strict, terete, simple. Leaves about an inch long. Pedicels of the fruit 3-6 

 lines long. SiUques 2-3 inches long and scarcely half a line Avide, crowned 

 with the nearly sessile stigma. Seeds with a winged margin. Funiculi slen- 

 der, about as long as the seed. (Flowers pale sulphur-color. Hook.) — Perhaps 

 distinct from the European plant, of which our specimens are not sufficiently 

 advanced for full comparison. We have not seen the fruit in /?., which has 

 narrower and rather acute leaves, and may prove to be a distinct species. 



2. T. macrocarpa (Nutt.! mss.): "radical leaves runcinate-dentate, or 

 simply toothed, hairy ; cauline ones lanceolate, sagittate, crowded, glabrous; 

 siliques strictly erect, very long and narrow. 



" Rocky situations, in the woods of Oregon. — Stem 3-4 feet high, terete, 

 glabrous, simple. Radical leaves sparingly hirsute with stellate hairs ; cau- 

 line ones croAvded on the lower part of the stem. Sepals linear. Petals lin- 

 ear and narrow, yellowish-white. Stigma capitate, somewhat 2-Iobed. 

 Silique about 4 inches long, rigidly erect and appressed. Seeds somewhat 

 quadrate, slightly margined." Nutt. — We should rather consider this a spe- 

 cies of Arabis, as the seeds are placed mostly in a single row in the very 

 narrow silique. 



3. T. spathulata (Nutt. mss.): "radical leaves broadly spatulate-oval, 

 Tepandly toothed, hirsute ; cauline oblong-lanceolate, clasping ; siliques ve- 

 ry long, erect. 



" Woods of the Oregon. — Stem 12-18 inches high, bp-anehed from near 

 the base. Upper leaves much smaller than the lower ones. Petals narrow, 

 a little longer than the calyx. Siliques about 3 inches long." Nutt. 



4. T. mollis (Hook.) : erect, hirsute with soft spreading hairs ; lower 

 leaves spatulate, sinuate-toothed ; the upper ones lanceolate, sagittate at the 

 base ; siliques elongated, linear, strictly erect. Hook. fi. Bor.-Am. 1. p. 40. 



Arctic America. — (£) A foot or more high. Flowers white, capitate-co- 

 rymbed. Petals cuneiform, nearly twice as long as the calyx. — Habit of 

 Arabis hirsuta. Hook. 



