. Results of a biological survey of mount Shasta, California. s mainly pure,but in places, particularly on the eastand northeast sides of the mountain, silver pines are scattered throughit, and in one place along its lower border (between Ash aud Incon-stauce creeks) the firs are replaced by lodge-pole pines, the only oneson the mountain. Whether or not Abies ma(/nijica occurs on Shasta is a question onwhich we can throw no light. I do not know how to tell magnificafrom shastensis except by the cones, and the trees did not bear cones theyear of our visit.^ Still, we found great numbers of old
. Results of a biological survey of mount Shasta, California. s mainly pure,but in places, particularly on the eastand northeast sides of the mountain, silver pines are scattered throughit, and in one place along its lower border (between Ash aud Incon-stauce creeks) the firs are replaced by lodge-pole pines, the only oneson the mountain. Whether or not Abies ma(/nijica occurs on Shasta is a question onwhich we can throw no light. I do not know how to tell magnificafrom shastensis except by the cones, and the trees did not bear cones theyear of our visit.^ Still, we found great numbers of old cones tuckedaway by the squirrels in decayed logs, and disconnected scales undermost of the trees where search was made, and among all these failed tofind a single bract which was not strongly exserted. And yet Miss While this paper was passing through the press (July, 1899), Walter K. Fisherrevisited Shasta. He found the lirs heavily laden with cones, and although thou-sands of trees were examined he failed to liud a single cone without the Fig. 19.—Cone scales of (a) Abies shas-tensig and (b) Abies cnncolorloiviana. 38 NORTH AMERICAN lAFXA. [NO. 16. Alice Eastwood showed mo, in the herbarium ot tho California Acad-emy of Sciences, a cone, said to have come lioni Waj^on Camp, in whichthe bracts, except a few at the base, are not exserted. Silver Pine or Mountain White Pine {Pinusmonficola).—Silverpines occur here and there on Shasta, scattered among tlie Shasta were found in greatest abundance on a pumice slope south ofBrewer Creek Canyon, where they are the dominant trees up to analtitude of 7,200 feet, and where the ground was strewn with cones ofthe previous year—cones in which the scales are strongly retiexed.
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