. 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. 4. Xanthium glanduliferum Greene. Glandular Clotbur. Fig. 4135. Xanthium glanduliferum Greene, Pittonia 4: 61. 1899. Similar to X. echinatum. Leaves very thick and scabrous with short stout papillae; burs oval, s"-8" long, 3"-4l" thick, yellow, the prickles scattered, bristly-hispid nearly to the hooked apex, scarcely as long as the conic- s
. 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. 4. Xanthium glanduliferum Greene. Glandular Clotbur. Fig. 4135. Xanthium glanduliferum Greene, Pittonia 4: 61. 1899. Similar to X. echinatum. Leaves very thick and scabrous with short stout papillae; burs oval, s"-8" long, 3"-4l" thick, yellow, the prickles scattered, bristly-hispid nearly to the hooked apex, scarcely as long as the conic- subulate short-bristly beaks. In dry soil, North Dakota to Assiniboia, Brit- ish Columbia and Nebraska. Adventive in Mis- souri. June-Sept. Xanthium Macounii Britton, known only from Lake Winnipeg, Manitoba, differs by a longer bur, 10" long and 4" thick. 5. Xanthium inflexum Mackenzie & Bush. Missouri Clotbur. Fig. 4136. Xanthium inflexum Mackenzie & Bush, Rep. Mo. Bot. Gard. 16: 106. 1905. Glabrate, or papillose-roughened above, 3°-4i° high. Leaves long-petioled, broadly ovate, more or less cordate, mostly 3-lobed, crenate-dentate; burs 1' long or less, the body oblong, more than twice as long as thick, 3"-3i" in diameter, glan- dular-pubescent; prickles hooked, stiff, longer than the diameter of the bur, glandular-pubescent below, glabrous above; beaks stout, about 5" long, bent at the middle, strongly inflexed, hooked. Sandy river-bottoms, Courtney, Missouri. 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
