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Dichotomous Key to Families
...as 2 or more distinct ovaries (i.e., the flower with 2 or more pistils) 8b. Gynoecium composed of either a single carpel or 2 or more connate carpels, the ovary thereby superficially appe...
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Liliaceae: Dichotomous Key
...with 2–5 alternate leaves or 2 opposite leaves 7a. Stigmas sessile; stems with 2–5 alternate leaves; tepals 20–82 mm long 7b. Stigmas elevated on a style; stems with 2 oppos...
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Section Paludosae: Dichotomous Key
...(2002). 1a. Perigynia glabrous; style persistent on the achene; leaf blades (2.6–) 5.5–21 mm wide 2a. Perigynia 3–4.5 mm long, glaucous; perigynium beak 0.3–0.6 mm long, w...
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Sisyrinchium: Dichotomous Key
...(2002). 1a. Inflorescences, each of which is subtended by 2 opposed spathe bracts, paired at the summit of the stem and sessile (i.e., without peduncles); spathe bracts closely subtend...
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Anthoxanthum: Dichotomous Key
...(3–) 10–20 (–35) spikelets; plants subcespitose on short rhizomes up to 2 cm long 2b. Staminate florets unawned or with short awn-tips to 0.6 (–1) mm long; glumes (2.5–) 3.5–6 mm long; p...
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Asteraceae Group 6: Dichotomous Key
...32a. Ray flowers 1–3, with rays usually 1–2 mm long; disk flowers 3–10; leaf blades 1–4 cm long 32b. Ray flowers usually 8, with rays 15–50 mm long; disk flowers 10–20; leaf blades 5–12 (...
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Crepis: Dichotomous Key
...body 2.5–4 mm long 2b. Inner series of involucral bracts pubescent on the adaxial (i.e., inner) surface; cypsela body (2.5–) 3–8 (–9) mm long 4a. Capitula with 10–20 florets;...
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Rorippa: Dichotomous Key
... 2a. Petals absent; fruiting pedicels 0.5–1.5 (–2) mm long 2b. Petals present; fruiting pedicels 2–15 mm long 3a. Petals 0.7–3.5 mm long, shorter than to approximatel...
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Boechera: Dichotomous Key
... 2a. Stem leaves narrowed to the base, not clasping the stem [Fig. 507]; siliques 2.5–3.5 mm wide 2b. Stem leaves auriculate-clasping at the base; siliques 1–2.5 mm wide ...
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Sagina: Dichotomous Key
...sepals 2–2.5 mm long; petals 1–2 mm long; capsules 2.5–3 mm long 4b. Seeds red-brown, smooth or inconspicuously tuberculate; sepals (2–) 2.5–3.5 mm long; petals 2–2.5 (–3) mm long; capsul...