. 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. 19. Senecio Crawfdrdii Britton. Crawford's Squaw-weed. Fig. 4628. Senecio Crawfordii Britton, Torreya 1: 21. 1901. .i'. Balsamitae var. Crawfordi Greenman, Rhodora 10: 69. 1908. Perennial, glabrous, or with sparse woolly pubescence below; stem slender, about 16' high. Leaves thick, firm, the basal ones erect, the larger 8'-io' long, the blades oval, oblong, or
. 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. 19. Senecio Crawfdrdii Britton. Crawford's Squaw-weed. Fig. 4628. Senecio Crawfordii Britton, Torreya 1: 21. 1901. .i'. Balsamitae var. Crawfordi Greenman, Rhodora 10: 69. 1908. Perennial, glabrous, or with sparse woolly pubescence below; stem slender, about 16' high. Leaves thick, firm, the basal ones erect, the larger 8'-io' long, the blades oval, oblong, or some of them narrowly obovate, mostly not more than one-half as long as the slender petioles, sharply and nearly equally serrate from the apex to the entire cuneate base; stem leaves lanceolate or narrower, mostly acuminate, incised-serrate, clasping, the upper sessile, the lower petioled, the uppermost very small; heads 3-7; peduncles slender, bracted, rarely forked; involucre 4" high, its bracts linear-lanceolate, acumi- nate, shorter than the white barbellate pappus; rays 4"-S" long; achenes linear, striate. Wet meadows, southeastern Pennsylvania. May-June. 20. Senecio pauperculus Michx. Balsam Groundsel. Fig. 4629. Senecio pauperculus Michx. Fl. Bor. Am. 2: 120. 1803. Senecio Balsamitae Muhl.; Willd. Sp. PI. 1999. 1804. Senecio aureus var. Balsamitae T. & G. Fl. N. A. 2: 442. 1843. Perennial, often tufted; stems slender, 1I-20' high, woolly at the base and in the axils of the lower leaves, or essentially glabrous. Basal leaves slender-petioled, oblong, rarely slightly spatulate, very obtuse, narrowed at the base, mostly thick, crenate, or rarely dentate, often purplish, l'-S' long, 3"-6" wide, their petioles and sometimes their lower surfaces persistently tomentose or woolly, or glabrous throughout; "lower stem leaves petioled, laciniate or pinnatifid, the upper sessile, very small; heads few or several, slender-pedun- cled, 6"-io"
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
