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Danthonia: Dichotomous Key
...lemmas 2.5–5 mm long excluding the awns; apical teeth of lemma 0.5–4 mm long 2a. Apical teeth of the lemma 0.5–2 mm long, triangular-acuminate [Fig. 207]; panicle 2–5 cm tall, crowded, th...
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Question: I encountered this woody plant with pinnately compound leaves on 2 different …
...on 2 different sites in the last 2 weeks (5/2 in Haverhill, NH; 5/16 in Lincoln, NH). In both cases they were on the sides of old logging roads. They look like they could be a Sambus species but I...
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Ceratophyllum: Dichotomous Key
...with 2 basal spines 1b. Leaves mostly 3- or 4-times forked, sparsely serrate, the ultimate segments capillary; styles 5–10 mm long; achenes with 4–15 spines—2 basal and 2–13 lateral ...
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Alisma: Dichotomous Key
... 2a. Achenes 1.8–3 mm long; petals 3.8–4.5 ×3–3.9 mm, noticeably longer than the sepals; styles 0.4–0.6 mm long 2b. Achenes 1.5–2.2 mm long; petals 1.8–2.5 ×1.4–2 mm...
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Leptochloa: Dichotomous Key
...(2003). 1a. Leaf sheaths sparsely to densely pubescent with pustulose-based hairs; ligule 0.6–3.2 mm long, truncate at apex; spikelets 2–4 mm long, with 2–5 (–6) florets 1...
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Cicuta: Dichotomous Key
...1.5–2 mm long; styles becoming 0.5–0.7 mm long 1b. Axils of the leaves without bulbils; ultimate leaf segments linear to lanceolate, (5–) 6–25 (–40) mm wide [Fig. 346]; schizocarps (2–) 3...
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Madia: Dichotomous Key
...Leaves 2–7 ×0.1–0.4 cm; stems stipitate-glandular only near the summit; capitula 2–5 mm wide after pressing, with 0–5 ray flowers; rays 1.5–3 mm long 1b. Leaves 4–18 ×0.4–1....
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Phacelia: Dichotomous Key
...with 2–25 seeds 7a. Corolla white to blue, with a pair of ovate appendages near the base between the filaments; styles 7–12 mm long, glabrous capsule 2–3 mm tall with 2–4 seeds 2–3 mm lo...
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Lappula: Dichotomous Key
...1.5–2.5 mm wide 1b. Mericarp bodies 3–4 mm long, with 2 (rarely 3) rows of prickles around the margin, the prickles distinct; calyx 2.5–3 mm long in fruit; corolla 2–4 mm wide
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Mitella: Dichotomous Key
...leaves 2–4; basal leaf blades obtuse to acute at the apex; petals white, 1.8–2.2 mm long; pedicels 1–2 mm long 2a. Stem leaves 2, opposite, positioned below the lowest flower ...