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Leaves petiolate, leaf bases cordate
Leaf margins entire All leaves w/ petioles S. shortii Only lower leaves w/ petioles, becoming clasping above S. oolentangiense Leaf margins toothed Petioles of mid stem leaves unwinged or with narrow wings S. cordifolium Petioles of mid stem leaves prominently winged Upper stems and leaves evenly & densely hairy, leaves sand papery S. drummondii Upper stems and leaves glabrous or hairs in lines only Inflorescence white S. urophyllum Inflorescence blue S. ciliolatum Leaves sessile, leaf bases clasping/auriculate Leaf margins toothed S. prenanthoides Leaf margins entire Stems and leaves glabrous S. laeve Stems and leaves at least sparsely hairy Glandular hairs mixed with non glandular hairs toward inflorescence S. novae-angliae No glandular hairs Stems evenly hairy S. puniceum Stems with hairs in lines S. firmum Leaves sessile, leaf bases not clasping/auriculate Inflorescence blue Leaves silvery w/ silky hairs S. sericeum Leaves not silvery Upper stem glandular S. oblongifolium Upper stem not glandular S. praealtum Inflorescence white Phyllaries with spiny tip Phyllaries hairy S. ericoides Phyllaries glabrous S. pilosum Phyllaries without spiny tip Slender stem, leaves linear-lanceolate and with inrolled margins, limited to high quality wetlands S. boreale Stout stems, lanceolate or oblanceolate leaves w/out inrolled margins, common across state Underside of leaf glabrous S. lanceolatum Underside of leaf hairy at least on midrib Underside of leaf hairy on midrib S. lateriflorum Underside of leaf evenly hairy S. ontarionis |
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© Wisconsin State Herbarium, UW-Madison
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