. 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. sbeckia occidentalis L. Sp. PI. 900. occidentalis Walt. Fl. Car. 213. americana Gaertn. Fr. & Sem. 2 : 425. Siegesbeckia Michx. Fl. Bor. Am. 2: 134. 1803. Perennial; stem glabrous, or puberulent above,usually much branched, narrowly 4-winged, 3°-7high, the branches also winged and thin, ovate, or the upper oblong, opposit
. 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. sbeckia occidentalis L. Sp. PI. 900. occidentalis Walt. Fl. Car. 213. americana Gaertn. Fr. & Sem. 2 : 425. Siegesbeckia Michx. Fl. Bor. Am. 2: 134. 1803. Perennial; stem glabrous, or puberulent above,usually much branched, narrowly 4-winged, 3°-7high, the branches also winged and thin, ovate, or the upper oblong, opposite,minutely rough-pubescent on both sides, or gla-brate, acuminate at the apex, narrowed or con-tracted below into slender margined or nakedpetiole, serrate, 4-io long, i-2,¥ wide; headsnumerous, 6-i2 broad, corymbose at the endsof the stem and branches; involucre oblong-cam-panulate, 2-2> broad, its bracts lanceolate, ob-tuse, erect, or the tips slightly spreading, pubes-cent; rays 1-5, yellow, usually pistillate, rarelynone; achenes wingless; pappus of 2 slender, atlength divergent awns. In dry thickets and on hillsides, Maryland and southern Pennsylvania to Illinois, Florida,Alabama and Texas. 3. Phaethusa helianthoides (Michx.) ^er Crownbeard. Fig. 4490. Verbesina helian hoides Michx. Fl. Bor. Am. 2: 135. helianthoides Nutt. Gen. 2: 181. 1S18. Perennial; stem hispid or hirsute, 4-winged, usu-ally simple, 2°-4° high. Leaves ovate or oval, ses-sile, acute, acuminate or obtuse at the apex, nar-rowed at the base, serrate or serrulate, rough orappressed-hispid above, densely pubescent or canes-cent beneath, 2-4 long, i-\¥ wide, all alternate,or the lower opposite; heads solitary or few, 2-3broad; involucre hemispheric, about 2 high, itsbracts lanceolate, acutish, canescent, appressed; rays8-1S, pistillate or neutral, linear-oblong, yellow;achenes scabrous or pubescent, broadly winged;pappus of 2 subulate awns. On dry prairies and
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
