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| 資料編號: | HK-1188 |
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| 中文名稱: | 橢果雀梅藤(標室沒收錄) |
| 學名: | Sageretia ellipsoidea [找同屬植物] |
| 植物科名: (APG新系統) | RHAMNACEAE鼠李科 [找同科植物] |
| 標室舊系統 | RHAMNACEAE鼠李科[找同科] |
| 生長習性: | 藤狀灌木(攀緣) |
| 資料更新: | 20230215 11:42:43 pm |
| 備註: edited by Crawford Law on 03102022 2021年新種，S. ellipsoidea 的Holotype其實亦都是由之前被鑑定為S. lucida 的標本中選出來。 有關S. ellipsoidea 這新種的討論 (包括與近似物種 S. hamosa 跟 S. lucida 之間分別，例如枝條顏色、側脈數、葉大小、果實外型等) 詳見於 Yang Y, Peng H, Sun H (2021) Taxonomic revision of Sageretia (Rhamnaceae) from China I: identities of S. lucida, S. thea var. cordiformis and S. yunlongensis, with the description of a new species S. ellipsoidea. PhytoKeys 179: 13-28. Diagnosis. Similar to S. hamosa (Wall.) Brongn., but differs in having smaller leaves (5–12 × 2.5–4 cm in S. ellipsoidea vs. 8–15 (–25) × 3.5–6 (–7) cm in S. hamosa), less lateral veins (5–7 pairs vs. 7–11 pairs), shorter rachises (1–3 (–10) cm vs. 6–20 (–25) cm), and ellipsoidal or elliptic-ovoid fruits (vs. subglobose or globose in S. hamosa). Description: Woody vines. Branches opposite or subopposite, glabrous ; first-year branches green, sometimes with hard-straight spine opposite to leaf, second- to fourth-year branches reddish brown . Leaves opposite or subopposite; petioles 8–15 mm, leaf blades leathery, ovate-oblong, oblong to elliptic, 5–12 × 2.5–4 cm, lateral veins 5–7 pairs, prominent abaxially, impressed adaxially, base rounded, margin crenate, apex obtuse to shortly acuminate . Inflorescences usually axillary spicate, rarely spicate-paniculate; rachises 1–3 (–10) cm. Flowers subsessile, white to yellowish white; sepals triangular-ovate, ca. 1.5 mm, apex acute; petals clawed; stamens as long as petals. Drupes ellipsoidal or elliptic-ovoid , 10–12 × 5–7 mm, green, turning to orange-red, claret and finally purple-black, base with inconspicuous disk remains; pyrenes 1–2, emarginate at both ends, asymmetrical. Phenology. Flowering from April to July, ripe fruits from November to January of next-year. Etymology. This species is named for its ellipsoidal or elliptic-ovoid drupes which are different from other Sageretia species (subglobose or globose). Distribution and habitat. The species is currently found in southern China (Fujian, Guangdong, Guangxi, Hainan; Fig. 2), and probably in northeastern Vietnam. It grows in moist forests along streams on granite mountains below 1200 m | |
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