. 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 102d meridian. Botany; Botany. 234 OROBANCHACEAE. Vol. 2. Thalesia fasciculata (Nutt.) Britton. Clustered or Yellow Cancer-root. Fig. 3877. Orobanche fasciculata Nutt. Gen. 2: 59. 1818. Anoplanthus fasciculatus Walp. Rep. 3: 480. 1844-45. Aphyllon fasciculatum A. Gray, Syn. Fl. 2: Part i, 312. 1878. Thalesia fasciculata Britton, Mem. Torr. Club 5 : 298. 1894. Stem erect, 2-4' high, den
. 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 102d meridian. Botany; Botany. 234 OROBANCHACEAE. Vol. 2. Thalesia fasciculata (Nutt.) Britton. Clustered or Yellow Cancer-root. Fig. 3877. Orobanche fasciculata Nutt. Gen. 2: 59. 1818. Anoplanthus fasciculatus Walp. Rep. 3: 480. 1844-45. Aphyllon fasciculatum A. Gray, Syn. Fl. 2: Part i, 312. 1878. Thalesia fasciculata Britton, Mem. Torr. Club 5 : 298. 1894. Stem erect, 2-4' high, densely glandular- pubescent, bearing several scales and 3-15 naked i-flowered peduncles l'-4' long. Calyx glandular, broadly campanulate, 3"-$" high, about one-third the length of the corolla, its lobes triangular-lanceolate or triangular-ovate, acute, equalling or shorter than the tube; co- rolla nearly 1' long, purplish to yellow, puberu- lent without, the curved tube 3 times as long- as the limb, the lobes oblong, obtuse, the limb more manifestly 2-lipped than in the preced- ing species; capsule ovoid to globose. In sandy soil, parasitic on the roots of various plants, mostly composites, northern Indiana to Minnesota, Yukon and British Columbia, Ne- braska, Arizona and California. April-Aug. Thalesia lutea (Parry) Rydb. [Thalesia fasciculata lutea (Parry) Britton] is a race with light yellow flowers, growing on grasses in western Nebraska and Wyoming. 2. OROBANCHE [Tourn.] L. Sp. PI. 632. 1753. Glandular-pubescent, erect simple or branched, reddish yellowish violet or nearly white herbs, parasitic on the roots of various plants, with scattered scales, and spicate or racemose, complete and perfect, bracted and sometimes bracteolate flowers. Calyx split both above and below, nearly or quite to the base, the divisions 2-cleft or rarely entire, or more or less unequally 2-5-toothed. Corolla oblique, strongly 2-lipped; upper lip erect, emarginate or 2-lobed; lower lip spr
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