. 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. Genus 3. RAGWEED FAMILY 2. Gaertneria discolor (Nutt.) Gaertneria. Fig. 4130. Ambrosia tomentosa Nutt. Gen. ^: 186. tomentosa (A. Gray) Kuntze. Not. Franseria discolor Nutt. Trans. Am. Phil. Soc. (II.)7: 345. 1841. Gaertneria discolor Kuntze, Rev. Gen. PI. 339. 1891. Erect or ascending from perennial rootstocksbranched, about 1° high. Leave
. 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. Genus 3. RAGWEED FAMILY 2. Gaertneria discolor (Nutt.) Gaertneria. Fig. 4130. Ambrosia tomentosa Nutt. Gen. ^: 186. tomentosa (A. Gray) Kuntze. Not. Franseria discolor Nutt. Trans. Am. Phil. Soc. (II.)7: 345. 1841. Gaertneria discolor Kuntze, Rev. Gen. PI. 339. 1891. Erect or ascending from perennial rootstocksbranched, about 1° high. Leaves nearly all bipin-natifid, petioled, densely white-tomentose beneathgreen and pubescent or glabrate above, 2-5 long;sterile racemes narrow, commonly solitary, i-2long; fruiting involucres clustered in the axilsfinely canescent, about 3 long, mostly 2-floweredarmed with short sharp conic spines. In dry soil, South Dakota, Nebraska, WyomingKansas, Colorado and New Mexico. 3. Gaertneria tomentosa (A. Gray) Kuntze. Woolly Gaertneria. Fig. 4131. Franseria tomentosa A. Gray, Mem. Am. Acad. 4: G. tomentosa Kuntze, Rev. Gen. PI. 339. 1891. Gaertneria Grayi A. Nelson, Bot. Gaz. 34: 35. 1902. Erect from a deep perennial root, usuallybranched at the base, i°-3° high. Leaves pin-nately lobed or divided, finely and densely to-mentose on both sides, or ashy above, the terminalsegment l
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
