. Brigham Young University science bulletin. Biology -- Periodicals. BIOLOGICAL SERIES. VOL. NO. 1 NOTES ON ERIOGONUM - VI 23 E. effusion. It lias been Impossible to discover the combinatitm of characters she used to place the vari- ous tbrnis into one or the other of these species. Under E. microlhecuin she placed var. rigidiiiu (and included var. follosum as a synonym, in part - but there is no indication where the other "part" should have been applied). E. friscanum, and described ssp. intermedium - one each tVom Colorado. Utah, and Nevada respectively. Under E. effusum she p
. Brigham Young University science bulletin. Biology -- Periodicals. BIOLOGICAL SERIES. VOL. NO. 1 NOTES ON ERIOGONUM - VI 23 E. effusion. It lias been Impossible to discover the combinatitm of characters she used to place the vari- ous tbrnis into one or the other of these species. Under E. microlhecuin she placed var. rigidiiiu (and included var. follosum as a synonym, in part - but there is no indication where the other "part" should have been applied). E. friscanum, and described ssp. intermedium - one each tVom Colorado. Utah, and Nevada respectively. Under E. effusum she placed E. simpsonii and E. nelsonii - one each from New Mex- ico and Utah. The var. folioswn is now defined to include those populations of Eriogonum microthecum from the southern part of the species' range. It is easily recog- nized by the lightly revolute leaves with densely Ian- ate to tomentose stems and inflorescences. Still var. folidsum is exceedingly variable even as now defined. The largest forms of the species are found within this variety as some shrubs are over a meter high in north- ern New Mexico, northeastern Arizona, and southern Nevada; yet, within this same variety, 1 have been forced to place some highly reduced populations found on gumbo clay hills in eastern Utah and central Nevada. These latter populations are thought to rep- resent an extreme in the variation, and except for the isolated plants in central Nevada which are provision- ally placed here, all of these depauperate entities can be referred to the var. foliosum in the strictest k • • • • • Fig. 8. Distribution map of Eriogonum microthecum var. foliosum. Stars refer to populations intermediate between var. laxi- florum and var. 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 Brigham Young University.
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