An illustrated flora of the An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 Genls 30. MUSTARD FAMILY. i5>9 36. LEAVENWORTHIA Torn Ann. Lye. X. Y. 4: 87. 1837. Low winter-annual glabrous scapose herbs, with lyrate-pinnatifid basal leaves, and few or solitary terminal flowers. Petals wedge-shaped. Siliques flat, broadly linear or oblong, short-stipitate; valves dehiscent, nerveless, finely
An illustrated flora of the An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 Genls 30. MUSTARD FAMILY. i5>9 36. LEAVENWORTHIA Torn Ann. Lye. X. Y. 4: 87. 1837. Low winter-annual glabrous scapose herbs, with lyrate-pinnatifid basal leaves, and few or solitary terminal flowers. Petals wedge-shaped. Siliques flat, broadly linear or oblong, short-stipitate; valves dehiscent, nerveless, finely reticulate-veined. Seeds in i row in each cell of the pod, flat, winged or margined; embryo straight, or nearly so, the redicle short, slightly bent toward the cotyledons. [In honor of Dr. M. C. Leavenworth, U. S. A.] es, natives of southeastern North America. Type species: Leaven- I. Leavenworthia uniflora (^lichx.) Britton. Fig. 2097. Cardamine uniflora Michx. Fl. Bor. .^m. 2: 29. 1803. Leavenworthia Michauxii Torr. Ann. Lye. N. Y. 4: 89. 1837. L. uniflora Britton, Mem. Torr. Qub 5 : i/i. 1894. Tufted, 2'-6' high. Basal leaves rosulate, numerous, I'-4' long, the segments 5-17, irregularly dentate or angled, 2'-3' long, the terminal one somewhat larger, all narrowed near the base, but. slightly expanded at the junction with the rachis; stem-Ieaves'none, or 1-3, similar, but smaller; flowers about 3' broad; petals white or purplish with a yellow base, about twice the length of the sepals; pods oblong or linear, 6'-i5' long, 2' wide when mature; style =tout, about *' long. Michaux's Leavenworthia.
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