. 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. Genus 66. THISTLE FAMILY 21. Helianthus tracheliifolius Mill. Throatwort Sunflower. Fig. 4481. Helianthus tracheliifolius Mill. Gard. Diet. Ed. 8, No. 7. 1768. Similar to the following species, but the stem usually roughish-pubescent above. Leaves short-petioled, ovate- lanceolate, or lanceolate, 3-nerved, green both sides, but darker above, generally rougher o
. 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. Genus 66. THISTLE FAMILY 21. Helianthus tracheliifolius Mill. Throatwort Sunflower. Fig. 4481. Helianthus tracheliifolius Mill. Gard. Diet. Ed. 8, No. 7. 1768. Similar to the following species, but the stem usually roughish-pubescent above. Leaves short-petioled, ovate- lanceolate, or lanceolate, 3-nerved, green both sides, but darker above, generally rougher on the upper surface, the lower ones sharply serrate; branches and peduncles scabrous; heads several, 2i'-3i' broad; bracts of the hemispheric involucre linear-lanceolate, long-acuminate, ciliate and puberulent, longer than the yellow disk, sometimes foliaceous, and 3 times its length. In dry soil, Connecticut to Pennsylvania, North Carolina, Ohio, Minnesota and Arkansas. 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 Britton, Nathaniel Lord, 1859-1934; Brown, Addison, 1830-1913. New York, Scribner
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
