Trifolium
Family: Fabaceae
Trifolium image
  • Gleason & Cronquist
  • Resources
Vascular plants of NE US and adjacent Canada
Cal-tube campanulate to tubular, sometimes oblique, the lobes setaceous to triangular, often unequal; pet all separate (spp. 15-17) or ±united into a tube, usually withering and persistent after anthesis; standard ovate to oblong or obovate, often folded about the wings or with only its summit outwardly curved; stamens 10, diadelphous, filaments dilated below the anthers; fr short, straight, often included in the persistent cal, dehiscent or indehiscent, 1-6-seeded; herbs with 3-foliolate, serrulate lvs and small fls in heads, spikes, or head-like racemes or umbels. In the absence of fr, our spp. may be distinguished from Medicago by their strongly bilabiate cal. 250, widespread.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Species within inventory project: Intermountain Regional Herbarium Network
Trifolium andersonii
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Trifolium andinum
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Trifolium beckwithii
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Trifolium cyathiferum
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Trifolium dasyphyllum
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Trifolium dedeckerae
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Trifolium eriocephalum
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Trifolium fragiferum
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Trifolium gymnocarpon
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Trifolium hybridum
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Trifolium kingii
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Trifolium leibergii
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Trifolium longipes
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Trifolium macrocephalum
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Trifolium microcephalum
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Trifolium monanthum
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Trifolium nanum
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Trifolium owyheense
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Trifolium parryi
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Trifolium pinetorum
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Trifolium pratense
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Trifolium repens
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Trifolium rollinsii
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Trifolium rusbyi
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Trifolium variegatum
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Trifolium wormskioldii
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