Page 273: 3,450 results for me
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Ranunculus gmelinii (lesser yellow water crowfoot)
...gmelinii DC. var. hookeri (D. Don) L. Benson; R. gmelinii DC. var. prolificus (Fern.) Hara; R. gmelinii DC. ssp. purshii (Richards.) Hultén; R. gmelinii D...
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Amaranthus powellii (Powell's amaranth)
...specimens are unknown. Fields, roadsides, railroads, disturbed soil, gardens. Native to North America? Yes Sometimes Confus...
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Cuscuta europaea (greater dodder)
...America? No Sometimes Confused With: perianth mostly 5-merous, lobes of the calyx acute at the apex, and infrastaminal scales simple and fringed...
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Dactylis glomerata (orchard grass)
...glume: the glume has an awn. Tip of glume: the tip of the glume is not divided (though it may have an awn on it). ...
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Acorus calamus (single-veined sweetflag)
...chromosomes, it is sterile and cannot produce fruit. European settlers brought it to North America and grew it for medicinal purposes. It propagates readily through spread of the rhizomes, and has spr...
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Potamogeton pulcher (spotted pondweed)
...America? Yes Sometimes Confused With: submersed leaf blades ovate to broad-oblanceolate, with 19–49 veins, f...
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Schoenoplectus americanus (chair-maker's club-bulrush)
...America? Yes Sometimes Confused With: uppermost leaf with a well developed blade that is several times longer...
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Galium labradoricum (northern bog bedstraw)
...(specimens at NEBC! and NHA!). Native to North America? Yes Sometimes Confused With: lea...
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Erysimum capitatum (sand-dune wallflower)
...America? Yes and no (some introduced) Sometimes Confused With: petals 12-18 mm l...
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Rosa micrantha (small-flowered sweet-briar rose)
...America? No Sometimes Confused With: styles pubescent, sepals erect-ascending post anthesis, sometimes persisting in fruit, and leaflets evident...