. 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. 474 COMPOSITAE. Vol. III. Achenes short, flattened, sharp-margined, or winged, at length deciduous with the chaff. Pappus with I or 2 teeth, or none. [Name unexplained.] About 4 species, natives of North America. Type species: Rudbeckia columnaris Sims. Style-tips lanceolate-subulate; leaf-segments lanceolate; rays i'-z' long. i. Style-tips short, bl
. 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. 474 COMPOSITAE. Vol. III. Achenes short, flattened, sharp-margined, or winged, at length deciduous with the chaff. Pappus with I or 2 teeth, or none. [Name unexplained.] About 4 species, natives of North America. Type species: Rudbeckia columnaris Sims. Style-tips lanceolate-subulate; leaf-segments lanceolate; rays i'-z' long. i. Style-tips short, blunt; leaf-segments linear, rays 3"-is" long. Disk cylindric, at length i' long or more ; rays mostly as long, or longer. 2. R. columnaris. Disk globose to short-oblong, about l/2' high; rays mostly short. 3. R. Tagetes. i. Ratibida pinnata (Vent.) Barnhart. Gray-headed Cone-flower. Fig. 4453. Rudbeckia pinnata Vent. Hort. Cels. pi. 71. 1800. Lepachys pinnata T. & G. Fl. N. A. 2 : 314. 1842. Ratibida pinnata Barnhart, Bull. Torr. Club 24: 410. 1897. Rough and strigose-pubescent throughout; stem branched or simple, 3°-5° high. Leaves pin- nately 3-7-divided, the basal ones sometimes 10' long, petioled, the segments lanceolate, dentate, cleft or entire, acute or acuminate; upper leaves sessile or nearly so, the uppermost commonly small and entire; bracts of the involucre linear or linear-oblong, short, reflexed; rays 4-10, yel- low, i'-i' long, z"-g" wide, drooping; style-tips lance-subulate; disk oblong, gray or becoming brown, rounded, at length twice as long as thick; chaff of the receptacle canescent at the summit; achenes compressed, acutely margined, the inner margin produced into a short tooth. On dry prairies, Ontario and western New York to Florida, South Dakota, Nebraska, Kansas and Louisi- ana. Adventive eastward to Massachusetts. June- 2. Ratibida columnaris (Sims) D. Don. Long-headed or Prairie Cone-flower. Fig. 4454- Rudbeckia columna
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
