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Updated: May 21, 2025
Helianthus multiflorus, or, according to Asa Gray, speaking botanically, H. decapetalus hort. var. multiflorus, is mentioned first, because it is the subject of the colored illustration.
The shape of the leaves would have led me rather to refer it to H. trachelifolius, a closely allied species. H. decapetalus.
The name multiflorus is established by long usage, and perhaps was originally given in contrast to the few-flowered habit of H. annuus, for the type of the species is more floriferous than the variety of which Asa Gray says that it is "known only in cultivation from early times, must have been derived from decapetalus," a statement which gardeners would hardly have accepted on less indisputable authority, as they will all think the habit and appearance of the two plants widely different.
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