Geum Linnaeus (Q3873)
Geum is a taxon with the rank genus within the tribe Colurieae
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Geum Linnaeus
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Geum is a taxon with the rank genus within the tribe Colurieae
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Statements
taxon/id/Geum Linnaeus
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Geum Linnaeus
Geum
Linnaeus
Smedmark, J.E.E. 2006. REcircumscription of Geum L. (Colurieae: Rosaceae). Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 126: 409-417
accepted
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from stout caudices or rhizomatous, fibrous-rooted.
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Stems 1–5, erect, simple.
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Leaves winter-persistent (basal), basal and cauline, simple, 3-foliolate, lyrate-pinnate, or odd-pinnate (commonly with smaller leaflets intermixed with larger ones);
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stipules often conspicuous, ± free or adnate to petiole or blade, linear, lanceolate, or ovate, margins entire, toothed, or lobed;
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petiole present, sometimes absent on cauline leaves;
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blade oblanceolate, obovate, elliptic, ovate, or orbiculate, herbaceous, major leaflets 1–26, rhombic, elliptic, oblong, obovate, oblanceolate, orbiculate, reniform, or cordate, margins flat, 2–7-lobed and/or laciniate, serrate, dentate, or crenate, venation pinnate or palmate.
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Inflorescences terminal, 1–18-flowered, cymes, open;
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bracts present as reduced cauline leaves;
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bracteoles present or absent.
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Pedicels present.
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Flowers 4–46 mm diam.;
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epicalyx bractlets, if present, 5 (10 in G. glaciale);
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hypanthium saucer-shaped to cupshaped, 2–6 mm;
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sepals 5 (–10 in G. glaciale), erect to erect-spreading, reflexed or not, deltate, deltate-ovate, or deltate-lanceolate;
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petals 5 (–9 in G. glaciale), white to yellow, sometimes suffused with pink or purple, or purple-veined, obovate, orbiculate, ovate, obcordate, obdeltate, spatulate, suborbiculate, elliptic, or oblong;
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stamens [10–] 25–120, shorter than petals;
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torus hemispheric to cylindric;
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carpels (2–) 20–250 (–450), styles entire or geniculate-jointed, distal portions then deciduous;
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Fruits aggregated achenes, (2–) 20–250 (–450), ovoid to fusiform, tapered apically into style, 2–4.5 mm;
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hypanthium persistent;
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sepals persistent, erect, spreading, recurved, or reflexed;
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styles persistent, becoming accrescent, hooked and elongating to 10 mm, or not hooked and elongating to 70 mm. x = 7.
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suffused with pink or suffused with purple
sometimes
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