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| Sorbus erythrosepala Kainul., Sjöman & Aldén, in Kainulainen, Sjöman et Aldén, 2023. |
Sorbus erythrosepala sp. nov. from Napa Hai in north-western Yunnan is here described and illustrated. It belongs to the white to crimson fruited Sorbus subgenus Albocarmesinae and is superficially similar to the sympatric Sorbus filipes Hand.-Mazz., but it can be distinguished from that species by the stouter shoots, the larger leaves with pubescent, dull and more numerous leaflets, and in the coloration of the fruits.
KEYWORDS: Rosaceae, Sorbus, rowan, China, Yunnan, new species
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| Sorbus erythrosepala sp. nov., photos of cultivated material (KGB 71) at Gothenburg Botanical Garden: A, flower buds; B, open flowers; C, branch with immature fruits; D, ripe fruits; E, buds; F, shrub in autumn colours with pendulous infructescenses. Photographs: K. Kainulainen. |
Sorbus erythrosepala Kainul., Sjöman, Aldén, sp. nov.
Sorbus erythrosepala sp. nov. is morphologically similar to S. filipes Hand. -Mazz. in having lax inflorescences with pink flowers; longpedunculate and ± pendulous infructescences and white to pink fruits, but it differs from the latter in having leaves that are sparsely pubescent and dull (vs glabrous and glossy), and leaflets that are longer (to c. 35 mm vs c. 20 mm) and more numerous (up to 15 vs 8-13). Furthermore, its mature fruits are usually white (sometimes with pink blotches and usually with pink to crimson calyx lobes) whereas fruits of Sorbus filipes are usually pinkish.
ETYMOLOGY. — The specific epithet refers to the red sepals, which are distinctly contrasting on the otherwise white fruits.
Kent Kainulainen, Henrik Sjöman and Björn Aldén. 2023. Sorbus erythrosepala Kainul., Sjöman, Aldén, sp. nov. (Rosaceae), A New Rowan from Yunnan, China. ADANSONIA. 45(21); 337-342.
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