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Parietaria pensylvanica (Pennsylvania pellitory)
...mostly 2–3.5 mm long, longer than the bracts (vs. P. pensylvanica, with the plants annual, achenes light brown, obtuse at the apex, with an apical mucro, and tepals 1.5–2 mm long, shorter than the bra...
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Persicaria puritanorum (Puritan smartweed)
...6–12 mm wide, obloid to short-cylindrical, tepals 2–3 mm long at anthesis, enlarging in fruit and then up to 4 mm long, prominently, but minutely, patterned with a raised reticulum near the base, and ...
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Botrychium pallidum (pale moonwort)
...into 2 unequal lobes with the upper lobe larger).: Botrychium minganense Family: Ophioglossaceae Genus: Botrychium
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Lemna turionifera (turion duckweed)
... 2. Thallus length: 1.0 mm–4.0 mm. Roots: there is approximately one root per thallus. ...
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Asplenium platyneuron (ebony spleenwort)
...S2), special concern (code: SC) Information from Dichotomous Key of Flora Novae Angliae: 2. ...
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Suaeda maritima (herbaceous sea-blite)
...mm–2.2 mm. Leaf blade shape: the leaf blade is linear (very narrow with more or less parallel sides). Stigma length: ...
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Galium trifidum (three-petaled bedstraw)
...schizocarps 2–2.5 (–2.8) mm wide; pedicels filiform … 20b. G. trifidum ssp. trifidumSubspecies halophilum is known from MA, ME. It is restricted to saline habi...
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Mirabilis hirsuta (hairy umbrella-wort)
...mm–20.0 mm. Perianth shape: the perianth is campanulate (bell-shaped, with a tube about as long as wide, flaring at the mouth). ...
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Pellaea glabella (slender cliff-brake)
... 2. Pellaea glabella Mett. ex Kuhn ssp. glabella Nslender cliff-brake. CT, MA, VT. High-pH cliffs, sometimes on roadcuts and mortar ...
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Melilotus indicus (Indian sweet-clover)
... 20.0 cm–60.0 cm. Number of carpels: 1.0 NA–1.0 NA. Flower number: 15.0 NA–25.0 NA. ...