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Verbascum: Dichotomous Key
...(1972). 1a. Plants pubescent with simple, glandular hairs; filaments pubescent with purple, knob-tipped hairs; capsule subglobose, pubescent with minute hairs or glabrous ...
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Amelanchier sanguinea (round-leaved serviceberry, round-leaved shadbush)
...(7–) 10–30 mm long) and sparsely pubescent during flowering, with an open, scutelliform hypanthium, and petals (10–) 11–15 (–20) mm long. Many reports of A. sanguinea from MA and all rep...
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Elymus virginicus (common eastern wild-rye)
...3.5–11 cm tall, strongly glaucous; glumes indurate in the basal 1–2 mm … 10c. E. virginicus var. halophilus (Bickn.) Wieg.3b. Reproductive stems mostly 7–10 dm tall, wi...
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Glyceria fluitans (water manna grass)
...0.1-0.4 mm long).: Glyceria acutiflora lemmas 3.7–5.3 mm long, internodes of rachilla 1.1–1.8 mm long, and anthers 1–1.7 mm (vs. G. fluitans, with lemmas 5.4–7 mm long...
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Populus tremuloides (quaking aspen, quaking poplar)
...7-12 cm long and with 5-12 teeth per margin, each tooth 1.5-6 mm long (vs. P. tremuloides, with leaf blades usually 2-8 cm long and with mostly 18-30 teeth per margin, each tooth up to 1 mm tall).: ...
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Trichomanes intricatum (Appalachian bristle fern)
...S1) Information from Dichotomous Key of Flora Novae Angliae: 1. Trichomanes intricatum Farrar NCAppalachian bristle fer...
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Lygodium palmatum (American climbing fern)
...of 15 feet (4.5 m). This attractive and unusual fern has the further distinction of having been the first plant protected by law in the United States. This occurred in 1869, when Connecticut passed le...
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Petasites frigidus (northern sweet-coltsfoot)
... 11-20. Number of pappus parts: 1. Leaf blade base: the leaf has no petiole. ...
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Pellaea atropurpurea (purple cliff-brake)
...S1), endangered (code: E) Rhode Island: extremely rare (S-rank...
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Thalictrum dasycarpum (purple meadow-rue)
... 11. Stamen number: 12. Leaf type: the leaves are compound (made up of two or more dis...