Hayfever Plants. Their Appearance, Distribution, Time of Flowering, and Their Role in Hayfever, with Special Reference to North America. A New Series of Plant Science Books: Volume XV.Roger P. Wodehouse

1946 ◽  
Vol 21 (1) ◽  
pp. 86-87
Author(s):  
W. C. Spain
Keyword(s):  
North America ◽  
Special Reference ◽  
Plant Science

Sitka spruce (Picea sitchensis) in North America with special reference to its role in British forestry

1987 ◽  
Vol 93 (1-2) ◽  
pp. 1-12 ◽  
Author(s):  
L. Roche ◽  
P. G. Haddock
Keyword(s):  
Genetic Variation ◽  
North America ◽  
Special Reference ◽  
Picea Glauca ◽  
Natural Habitat ◽  
Sitka Spruce ◽  
Picea Sitchensis ◽  
Natural Distribution ◽  
Queen Charlotte Islands ◽  
Genetic Potential

SynopsisThe natural distribution of Sitka spruce is examined in relation to the species' role in British forestry. Particular attention is therefore given to a description of habitats on the Queen Charlotte Islands, and also on the adjacent mainland of British Columbia where Sitka spruce is sympatric with white spruce (Picea glauca) and hybridisation occurs. Examples of genetic variation are given and it is suggested that a knowledge of the genecologv of the species in its natural habitat would help to elucidate its full ecological and genetic potential in Britain.

scholarly journals The Climatic Limits of Wheat Cultivation, with Special Reference to North America: Discussion

1912 ◽  
Vol 39 (5) ◽  
pp. 441
Author(s):  
Prof. Myres ◽  
R. H. Curtis ◽  
W. P. Rutter ◽  
J. Wrigley ◽  
A. E. Kitson ◽  
...  
Keyword(s):  
North America ◽  
Special Reference ◽  
Wheat Cultivation
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