The only reliable way to tell Swainsona sericea from Swainsona behriana is to look at the hairs on the stems with at least a good hand lens. Swainsona sericea has hairs attached to the stem at about the middle. Behriana has hairs attached to the stem at or near one end.
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2,154,606 sightings of 19,958 species in 6,505 locations from 11,466 contributors
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