. 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. 4. Helianthus orgyalis DC. Linear-leavedSunflower. Fig. 4464. H. giganteus var. crinitus Nutt. Gen. 2: 177. 1818?Helianthus orgyalis DC. Prodr. 5 : 586. 1836. Perennial by slender rootstocks; stems glabrous,branched near the summit, very leafy to the top,6°-io° high. Leaves sessile, entire, linear or nearlyfiliform, or the lowest lanceolate, remotely dentateand short-petioled
. 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. 4. Helianthus orgyalis DC. Linear-leavedSunflower. Fig. 4464. H. giganteus var. crinitus Nutt. Gen. 2: 177. 1818?Helianthus orgyalis DC. Prodr. 5 : 586. 1836. Perennial by slender rootstocks; stems glabrous,branched near the summit, very leafy to the top,6°-io° high. Leaves sessile, entire, linear or nearlyfiliform, or the lowest lanceolate, remotely dentateand short-petioled, rough with mucronate-tippedpapillae, especially on the lower surface, acuminate,4-16 long, I-4 wide, the upper all alternate andi-nerved, the lower commonly opposite; heads nu-merous, about 2 broad, terminating slender branches ;involucre nearly hemispheric, its bracts linear-subu-late to lanceolate, acuminate, squarrose, ciliate; diskpurple or brown; receptacle convex, its chaff entire,or toothed, slightly ciliate; rays 10-20; achenes ob-long-obovate, glabrous, 2y-3 long, 2-4-awned. On dry plains. Missouri and Nebraska to Coloradoand Texas. 5. Helianthus atrorubens L. Hairy Wood SunflowerFig. 4465.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
