... 12 to 17 mm. long, abruptly contracted into an equal or longer petiole; upper cauline one or two pairs, narrow and sessile: thyrsus loose and fewflowered: sepals oblong, pruinose-glandular ; as also the short pedicels and occasionally the longer peduncles:... Synoptical Flora of North America: The Gamopetalae, Being a Second Edition ... - Page 442 by Asa Gray - 1886 - 586 pages Full view -
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