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Jepson Field Book volume 26 page 186 | University and Jepson Herbaria Archives, University of California, Berkeley

Jepson Field Book volume 26 page 186
Berkeley ---------- cont. Ceanothus divaricatus overlaps it but doesn't range as high, altho it ranges lower, say 2000 to 4000 feet. White flowers. - Rhamnus rubra, etc. I have just been fussing over the Cal. Rhamni. When one reads Greene's acct of R. rubra he feels that with the deciduous foliage and red fruits it is fully entitled to be a new species. Then one reads Mrs. B's acct in Proc. Cal. Acad.! The statements and rejoinders in Pitt.[?] & Cal. Acad. leave but the one impression, that Greene was determined at all hazards to maintain R. rubra, Mrs. B. to reduct it! So what is left for the judicious? The ::::::::: Feb. 1913 ---------- mean course of Trelease is evidently about right, namely var. rubra. But is it possible that Greene did not know that R. californica has red berries just before maturity when they become black? His ignorance is often so unexpected and great re Cal. botany that it may easily be so. Still no independent observer has thought it worth while to say definitely, R. rubra has berries black when dead ripe.  I have also fussed over R. californica. There seems to be nothing to do but admit it is a polymorphous form from all parts of the state. I thought it might be excluded from the Sierra Nevada, leaving var. tomentella & rubra, but apparently not. cont. p 191
University and Jepson Herbaria Archives, University of California, Berkeley
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