The University of Colorado Studies Volume . 10.cBoulder University of Colorado
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Author: Boulder University of Colorado
Page Count: 106 pages
Published Date: 01 May 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781236016706
File Name: The.University.of.Colorado.Studies.Volume...10.pdf
Download Link: The University of Colorado Studies Volume . 10
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...is of alpine type while the summer flora has rather montane and foothill affinities. Dasiphora Associations.--This name is given to the plants of moister forest openings near the lake. Excellent examples are seen to the northwest of Redrock Lake and also at the southeast. These areas are either entirely within the forest or else bounded by the forest on three sides. Soil moisture is found to be intermediate in amount between what obtains in the shrub zone and the moist forest. The dominant species is Dasiphora fruticosa which forms scattered clumps about a meter apart leaving ample unshaded space for herbaceous plants. These latter are a mixture of mesophytes and xerophytes. Springblooming plants are not conspicuous. In summer there are such drycountry species as Aniennaria, Sedum stenopetalum, Solidago and Lupinus side by side with moisture-requiring forms: Elephantella, Pentstemon glaucus stenosepalus, Castilleja sulphurea, Polygonum viviparum. This mongrel population indicates, of course, that the association is not a stable one but in a transition stage. From studies made elsewhere by the authors it is known that this stage may lead directly to Engelmann spruce forest, or that there may be an intermediate stage of aspen grove (Populus tremuloides). The autumn flora of the Dasiphora association is characterized by two or more species of gentians often in considerable numbers. 1 In early spring this association is of alpine type and may be correlated with the "dry meadow"--a very inappropriate name--of Cooper in the article previously cited. Aspen Association.--As noted in the previous paragraph a growth of aspens sometimes forms an intermediate stage in the development of coniferous forest, from sedge or grassland. Only one small grove of aspen...
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