. Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania, vol. 13. Botany; Botany. il MISCELLANEOUS EASTERN POLEMONIACEAB m Geography.—^Botanical exploration of western North America subsequent to Nuttall's time showed Collomia linearis to be widespread there, and by 1870 Gray ^ was able to state the range as " Both sides of the Rocky Mountains, north to Mackenzie River; also on the shore of New Brunswick, Fowler, perhaps a ; With respect to the final item, it should be noted that subsequent collect- ing has shown that the species
. Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania, vol. 13. Botany; Botany. il MISCELLANEOUS EASTERN POLEMONIACEAB m Geography.—^Botanical exploration of western North America subsequent to Nuttall's time showed Collomia linearis to be widespread there, and by 1870 Gray ^ was able to state the range as " Both sides of the Rocky Mountains, north to Mackenzie River; also on the shore of New Brunswick, Fowler, perhaps a ; With respect to the final item, it should be noted that subsequent collect- ing has shown that the species is present at a number of stations in both New Brunswick and Quebec, in a region where many northwestern plants occur as relics of a former cross-continental distribution, disrupted by the last ice sheet. These eastern colonies are accordingly here regarded as native, although the plant is unquestionably of recent introduction at several intervening points. On the accompanying map only records east of longitude 100° are Fia. 1. Distribution of CoUomia linearia. [Illinois: Becoming increasingly abundant as a weed, especially along rail- road Imes, in Cook-', Du Page-', Jo Daviess-', and Kane-' counties.] Iowa: Recorded from Chickasaw*, Decatur, Dickinson, Emmet* and Lyon counties. [Maine: Adventive in York* County.] Minnesota: Widespread northward, specimens having been seen from 10 counties: Aitkin, Becker, Chippewa, Goodhue, Jackson, Mille Lacs, Otter Tail, Pipestone, St. Louis and Steams. [Missouri: Entering along a railroad in Marion* County.] Nebraska: Common westward, and ranging east of 100° in Antelope and Cedar counties. [New Jersey: Collected once as a weed in Camden* County.] [New York.: Adventive along a railroad in Cattaraugus* County.] I 1. 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 wo
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