Difference between revisions of "Kerria"
Trans. Linn. Soc. London 12: 156. 1818.
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|distribution=e Asia (China;Japan);introduced also in Europe. | |distribution=e Asia (China;Japan);introduced also in Europe. | ||
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|discussion=<p>Species 1.</p><!-- | |discussion=<p>Species 1.</p><!-- | ||
--><p><i>Kerria</i> is a distinctive mesophytic shrub, native to montane forests and valleys at 200–3000 m in China and Japan, now widely cultivated. Morphologically, it stands closest to <i>Neviusia</i>.</p> | --><p><i>Kerria</i> is a distinctive mesophytic shrub, native to montane forests and valleys at 200–3000 m in China and Japan, now widely cultivated. Morphologically, it stands closest to <i>Neviusia</i>.</p> | ||
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|publication year=1818 | |publication year=1818 | ||
|special status=Introduced | |special status=Introduced | ||
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|subfamily=Rosaceae subfam. Amygdaloideae | |subfamily=Rosaceae subfam. Amygdaloideae | ||
|tribe=Rosaceae tribe Kerrieae | |tribe=Rosaceae tribe Kerrieae | ||
Latest revision as of 22:58, 5 November 2020
Shrubs, spreading, open, rounded, 10–20(–30) dm; rhizomatous, suckering freely. Stems 1–30+, widely arcuate, sparingly branched; bark (periderm) not forming, epidermis green, striate, glabrous; short shoots absent; unarmed; bud scales imbricate. Leaves winter-deciduous, cauline, alternate; stipules caducous, linear-subulate, thin, margins entire ± strigose-ciliate; petiole present; blade ovate to lance-ovate, 2–8.5 cm, membranous, margins flat, coarsely doubly serrate, abaxial surface sparsely sericeous-strigose along veins. Inflorescences terminal on vernal, leaf-bearing lateral branches, flowers solitary, sparsely strigose or glabrous; bracts absent; bracteoles absent or present, leaflike. Pedicels present. Flowers 20–50 mm diam.; epicalyx bractlets 0; hypanthium saucer-shaped, 3–4 mm diam., glabrous; sepals (4 or)5(or 6), spreading to reflexed, oblong-ovate to ± orbiculate; petals (4 or)5(or 6), to 34 in multi-petaled cultivars, spreading, strong yellow to slightly orangish or yellow-cream (some petals white in multi-petaled cultivars), oblong-ovate to orbiculate, base short-clawed, apex rounded to emarginate; stamens 80–130 (0 or few in multi-petaled cultivars), shorter than petals; torus absent; carpels (4–)5(–8), globose, glabrous, styles lateral, linear, ± exceeding filaments; ovules 2. Fruits aggregated nutlets, (1–)5 in 1 whorl, tan, obliquely obovoid-globose, 4.5–5 mm, with distinct adaxial ridge, glabrous except for coarse basal hypanthial hairs; hypanthium persistent; sepals persistent (withering), reflexed; exocarp thin, wrinkled, mesocarp thin, dry, endocarp ± cartilaginous. x = 9.
Distribution
Introduced; e Asia (China, Japan), introduced also in Europe.
Discussion
Species 1.
Kerria is a distinctive mesophytic shrub, native to montane forests and valleys at 200–3000 m in China and Japan, now widely cultivated. Morphologically, it stands closest to Neviusia.
Selected References
None.