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Variation in immature cone color of ponderosa pine (Pinaceae) in northern California and southern Oregon

Variation in immature cone color of ponderosa pine (Pinaceae) in northern California and southern Oregon

Madrono 28(4): 272-275

The immature cone colour of 100 trees was recorded at 33 sites in mid Aug. 1978. The frequency of trees with medium and dark cones increased from south to northeast. It is suggested that altitude may be associated with shifts in cone colour.

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Accession: 001030394

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DOI: 10.2307/41424333

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