Notch Leaf Clover
Trifolium bifidum var. decipiens
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Bolander's Clover
Trifolium bolanderi
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Brewer's Clover
Trifolium breweri
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Santa Cruz Clover
Trifolium buckwestiorum
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Foothill Clover
Trifolium ciliolatum
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Bowl Clover
Trifolium cyathiferum
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Dedecker's Clover
Trifolium dedeckerae
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Cowbag Clover
Trifolium depauperatum
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Pale Sack Clover
Trifolium depauperatum var. amplectens
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Dwarf Sack Clover
Trifolium depauperatum var. depauperatum
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Truncate Sack Clover
Trifolium depauperatum var. truncatum
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Branched Indian Clover
Trifolium dichotomum
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Woollyhead Clover
Trifolium eriocephalum
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Hairy Head Clover
Trifolium eriocephalum ssp. eriocephalum
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Sour Clover
Trifolium fucatum
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Pinpoint Clover
Trifolium gracilentum
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Gray's Clover
Trifolium grayi
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Hollyleaf Clover
Trifolium gymnocarpon
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Howell's Clover
Trifolium howellii
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Saline Clover
Trifolium hydrophilum
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Jim's Clover
Trifolium jokerstii
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King's Clover
Trifolium kingii
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Lemmon's Clover
Trifolium lemmonii
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Long Stalked Clover
Trifolium longipes
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Longstalk Clover
Trifolium longipes ssp. atrorubens
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Elmer's Clover
Trifolium longipes ssp. elmeri
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Hansen's Clover
Trifolium longipes ssp. hansenii
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Longstalk Clover
Trifolium longipes ssp. multipedunculatum
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Oregon Clover
Trifolium longipes ssp. oreganum
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Longstalk Clover
Trifolium longipes ssp. shastense
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Macrae's Clover
Trifolium macraei
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Big Headed Clover
Trifolium macrocephalum
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Maiden Clover
Trifolium microcephalum
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Thimble Clover
Trifolium microdon
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Mountain Carpet Clover
Trifolium monanthum
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Grant's Carpet Clover
Trifolium monanthum ssp. grantianum
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Carpet Clover
Trifolium monanthum ssp. monanthum
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Small Carpet Clover
Trifolium monanthum ssp. parvum
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Delicate Carpet Clover
Trifolium monanthum ssp. tenerum
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Clammy Clover
Trifolium obtusiflorum
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Few-flowered Clover
Trifolium oliganthum
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Olive Clover
Trifolium olivaceum
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Southern Island Clover
Trifolium palmeri
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Pacific Grove Clover
Trifolium polyodon
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Productive Clover
Trifolium productum
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Siskiyou Clover
Trifolium siskiyouense
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Monterey Clover
Trifolium trichocalyx
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Whitetip Clover
Trifolium variegatum
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Tomcat Clover
Trifolium willdenovii
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Cows Clover
Trifolium wormskioldii
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Utah Arrowgrass
Triglochin concinna
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Arrow Grass
Triglochin concinna var. concinna
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Slender Arrow Grass
Triglochin concinna var. debilis
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Arrowgrass
Triglochin maritima
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Marsh Arrow-grass
Triglochin palustris
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Flowering-quillwort
Triglochin scilloides
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Three-ribbed Arrow-grass
Triglochin striata
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Giant White Wakerobin
Trillium albidum
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Narrowpetal Wakerobin
Trillium angustipetalum
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Giant Wakerobin
Trillium chloropetalum