Orobanche ludoviciana Nutt.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Orobanchaceae
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Scientific Name
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Description
Species Description - Parasitic on many kinds of plants, especially Artemisia and other Asteraceae; plants 1–3 dm, simple or rarely branched, with numerous appressed scale-lvs; spikes many- fld, dense, forming 1/3 to 2/3 of the shoot; fls mostly sessile or the lower on erect pedicels to 15 mm; cal subtended by (1)2 bractlets, as well as by a bract, bilabiate, the upper lip with a single lobe, the lower with 4; cal-lobes linear, 8–12 mm; cor often purplish, 1.5–2.5 cm; 2n=24, 48, 72, 96. Chiefly in sandy soil; Ill. and Ind. to Sask. and Tex., w. to Calif. and n. Mex. June–Aug. Our plants are var. ludoviciana. (Myzorrhiza l.)
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Common Names
prairie broom-rape