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Paronychia
See list of 3 species in this genusReference: Core (1941).
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1a. Stipules 2.5–8 mm long; calyx 3.5–5 mm long, each lobe tipped by a prominent awn 0.9–2 mm long; flowers concealed by conspicuous white bracts; plants perennial
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1b. Stipules 0.5–3 mm long; calyx 1–3 mm long, each lobe with a tiny apiculus or short awn up to 0.3 mm long; flowers not concealed by bracts; plants annual
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2a. Stems glabrous; calyx 1–1.5 mm long, the lobes terminated by an inconspicuous apiculus; mature fruit noticeably exceeding the calyx
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2b. Stems puberulent; calyx 2–3 mm long, the lobes terminated by a minute awn; mature fruit not or only shortly exceeding the calyx
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Each photo represents one species in this genus.