. 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. 9. Eupatorium Torreyanum Short. Tor-reys Thoroughwort. Fig. 4160. Eupatorium Torreyanum Short, 2nd Suppl. Cat. PI. Ky. 5. hvssopifolium var. laciniatum A. Gray, Syn. Fl. I : Parts, 98. 1884. Rootstock tuberous-thickened; stem usuallydensel} puberulent, mostly branched above, 13°-3° high. Leaves opposite, or sometimes in 3s,commonl}^ with short leafy branches i
. 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. 9. Eupatorium Torreyanum Short. Tor-reys Thoroughwort. Fig. 4160. Eupatorium Torreyanum Short, 2nd Suppl. Cat. PI. Ky. 5. hvssopifolium var. laciniatum A. Gray, Syn. Fl. I : Parts, 98. 1884. Rootstock tuberous-thickened; stem usuallydensel} puberulent, mostly branched above, 13°-3° high. Leaves opposite, or sometimes in 3s,commonl}^ with short leafy branches in theiraxils, often drooping, lanceolate, acute at theapex, narrowed at the base, sessile, I-s long,2-6 wide, usually distinctly 3-nerved, distantlyserrate, the upper and those of the branchesmuch smaller, linear, entire ; inflorescence mostlyloose; heads about 3 high, generally 5-flow-ered ; bracts of the campanulate involucre linear-oblong, obtuse, pubescent, or puberulent, imbri-cated in about 3 series, the outer shorter; flow-ers white. In dry soil, Pennsylvania to North Carolina,Kentucky, Florida and Texas. July-Sept. Gknus 4. THISTLE FAMILY. 359 10. Eupatorium semiserratum DC. Small-flowered Thorough wort.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
