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Marsilea quadrifolia (European water-clover)
...in 1862. Habitat: lacustrine (in lakes or ponds), riverine (in rivers or streams), shores of rivers or lakes All Characteristics: New England state: Rhode Isl...
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Lonicera xylosteum (fly honeysuckle)
... 15.0 mm–50.0 mm. Leaves per node: there are two leaves per node along the stem. Wings on fruit: ...
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Cardamine douglassii (pink bitter-cress)
... 15.0 mm–40.0 mm. Hairs between stem nodes: the stem has no hairs between the nodes. Leaf blade length: ...
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Achillea ligustica (Ligurian yarrow)
... 15.0 mm–15.0 mm. Seed tuft scale number: 0.0 NA–0.0 NA. Ray flowers: 1-5. ...
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Viburnum lantana (wayfaring tree)
... 1. Stamen number: 5. Leaf blade base symmetry: the leaf blade base is symmetrical. ...
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Cuscuta campestris (field dodder)
...mostly 1.4–2.1 mm long, and seeds 0.9–1.1 mm long (vs. C. campestris, with calyx lobes ovate-triangular, not or scarcely overlapping at base, flowers mostly 2.1–3.6 mm long, and seeds 1.1–1.5 mm long)...
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Lapsana communis (common nipplewort)
... 11-15. Sap: the sap is milky and opaque, and may be white or colored. Number of bracts at flower head base: ...
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Tanacetum vulgare (common tansy)
...as 1631 by a certain John Winthrop Jr., who carried seeds of this and many other plants from Europe. It was cultivated in colonial gardens for its medicinal and embalming properties. By 1785, common t...
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Platanthera ciliaris (orange fringed bog-orchid)
...mm–150.0 mm. Lower petal length: 8.0 mm–19.0 mm. Shape of viscidium: the viscidium is roughly circular. ...
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Chenopodium bonus-henricus (perennial goosefoot)
...mm–100.0 mm. Parasitism: the plant is not parasitic. Leaf stalk attachment to leaf: the petiole att...