Publication Date:
1973-12-01
Description:
Resin canals in needles of Pinusalbicaulis and P. flexilis trees from southwestern Alberta were examined. Pinusalbicaulis needles are characterized by one ventral and two dorsal canals in contrast to those of P. flexilis which vary in the number and development of resin canals.
Print ISSN:
0045-5067
Electronic ISSN:
1208-6037
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
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