. 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. 506 COMPOSITAE. Vol. 3. Hymenopappus tenuifolius Pursh. Woolly White Hymenopappus. Fig. 4531. Hymenopappus tenuifolius Pursh, Am. Sept. 742. 1814. Biennial; stem lightly tomentose, or at length glabrate, i°-2° high, slender, leafy below, corym- bosely branched and nearly naked above. Lower and basal leaves petioled, 1-3-pinnately parted into linear or fil
. 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. 506 COMPOSITAE. Vol. 3. Hymenopappus tenuifolius Pursh. Woolly White Hymenopappus. Fig. 4531. Hymenopappus tenuifolius Pursh, Am. Sept. 742. 1814. Biennial; stem lightly tomentose, or at length glabrate, i°-2° high, slender, leafy below, corym- bosely branched and nearly naked above. Lower and basal leaves petioled, 1-3-pinnately parted into linear or filiform lobes, woolly pubescent be- neath, at least when young; upper leaves much smaller and less compound; heads numerous, co- rymbose, 4"-6" broad; bracts of the involucre obovate-oblong, usually densely tomentose; co- rolla white, its lobes slightly shorter than the throat; achenes densely villous-pubescent; pappus of several oblong to ovate, ribbed or nerved scales, which are about as long as the width of the top of the achene or shorter. On dry prairies, South Dakota to Nebraska, Kansas and Texas. June-Sept. 4. Hymenopappus flavescens A. Gray. Woolly Yellow Hymenopappus. Fig. 4532- Hymenopappus flavescens Gray, Mem. Am. Acad. (11)4:97- 1849. Biennial; stem densely white-woolly, at least when young, i°-24° high, leafy, branched above. Leaves 1-3-pinnately parted or divided into linear segments; heads numerous, usually larger than those of the preceding species; involucral bracts obovate to ovate with greenish white margins; corolla yellow or yellowish, the lobes about equal- ling the throat, achenes short-villous; pappus scales spatulate, shorter than the slender corolla-tube. In sandy soil, Kansas to Texas, Arizona and north- ern Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
