...napus and rapa; but according to other botanists from three species; whilst others again strongly suspect that all these forms, both wild and cultivated, ought to be ranked as a single species... 
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...vesca, but several of these are considered species by some botanists...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...These five or six forms have been ranked by most botanists as specifically distinct; but this may be doubted, for Andrew Knight, who raised no less than 400 crossed strawberries, asserts that the F...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...If, as some botanists maintain, Æ...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Spontaneous vegetation supplied us with thelong-stalked, scanty-leaved, ill-smelling wilding, as found, accordingto the botanists, on the ocean cliffs...
J. H. Fabre 「The Wonders of Instinct」
...]
[*** The botanists...
David Collins 「An Account of the English Colony in New South Wales, Vol. 1」
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