学名(拉丁名) | Euonymus gracillimus |
中文名 | 纤细卫矛 |
命名人 | Hemsl. |
中文科名 | 卫矛科 |
拉丁属名 | Euonymus |
类型 | species |
拉丁科名 | Celastraceae |
中文属名 | 卫矛属 |
学名(拉丁名) | Euonymus gracillimus |
命名人 | Hemsl. (accepted name) |
拉丁属名 | Euonymus |
类型 | species |
拉丁科名 | Celastraceae |
学名(拉丁名) | Euonymus gracillimus |
命名人 | Hemsl. |
发表年份 | 1886(年) |
拉丁属名 | Euonymus |
类型 | species |
拉丁科名 | Celastraceae |
学名(拉丁名) | Euonymus gracillimus |
中文名 | 纤细卫矛 |
拉丁属名 | Euonymus |
类型 | species |
拉丁科名 | Celastraceae |
学名(拉丁名) | Euonymus gracillimus |
中文名 | 纤细卫矛 |
中文科名 | 卫矛科 |
拉丁属名 | Euonymus |
类型 | species |
拉丁科名 | Celastraceae |
中文属名 | 卫矛属 |
学名(拉丁名) | Euonymus gracillimus |
发表年份 | 1886(年) |
拉丁属名 | Euonymus |
类型 | species |
拉丁科名 | Celastraceae |
Deciduous shrubs, slender, to 4 m tall; branches terete, slender, twigs green to light green, slender, 4-angled. Petiole slender, 2-4 mm; leaf blade thinly leathery or thickly papery, elliptic or narrowly elliptic, 4-5 × 1.2-2 cm, base cuneate or attenuate, margin entire to crenulate or remotely serrate distally, apex acuminate or long acute; lateral veins not obvious, curving forward and webbing and disappearing before reaching margin. Peduncle 3-4 cm, slender, 1 or 2 × dichotomously branched, several flowered; pedicel 3-5 mm. Flowers 4-merous (not seen). Capsule rhombic, 4-angled and deeply grooved, brown or yellow-brown to red-brown, 8(-10) mm × 1.2(-1.4) cm. Seeds ellipsoid, dark brown; aril orange-red. Fl. unknown, fr. Aug-Nov.
Forests, scrub; ca. 1200 m. Guangdong, Guangxi, Hainan.
This species is readily distinguished by its extreme slenderness, narrow leaves, and minute flowers on a filiform peduncle. It is rare in the wild. The original description lists a 5-merous flower; however, on the type specimen (K), it is difficult to examine the number because the specimen is just before the flower bud stage. All specimens corresponding with the description and the type have only 4-lobed fruits.
Euonymus gracillimus is based on material collected by Reeves without exact locality. It undoubtedly came from S China, where John Reeves resided in Guangzhou (Canton) and Macao from 1812-1813. Its relationship with E. nitidus, which has slightly larger leaves but the same fruit, needs further study.
69.纤细卫矛(新拟)
Euonymus gracillimus Hemsl. in Jour. Linn. Soc. Bot. 23: 119. 1886; Blakel. in Kew Bull. 1951: 242. 1951.
灌木至小乔木,高1至数米;小枝绿色,纤细,有4条细棱线。叶薄革质,有光泽,披针形,长3-7厘米,宽6-12毫米,先端钝渐尖或渐窄而钝,基部阔楔形,边缘上部有疏浅齿或近全缘,叶脉纤细,只中脉在两面全明显,侧脉5-8对,在两面均不甚明显,基部2对常较长并向前伸,侧脉在近叶缘处常结成网,小脉内含不见;叶柄细短,长2-5毫米。聚伞花序1-3花,少为5花,花小,直径约6毫米,4数;花瓣近圆形;雄蕊近无花丝。蒴果黄色,4裂至果实一半处,扁方形,长5-7毫米,直径约12毫米,上端平截;果序梗纤细,长1-2厘米;小果梗长5-7毫米;种子每室1-2,宽阔略呈长方形,长4-5毫米,深棕色或棕红色,稍有光泽,外被桔黄色假种皮。花期不详,果期11月。
产于广东(怀集)、海南(白沙、凌水)。生长在山脚密林中。模式标本产地不明。
现有标本仅见于广东及海南,均为带果标本。其枝条和叶及花序等特征完全与原记载相符。主模式是一带花标本,无果,而且未记载标本号及产地。据Blakelock记载产地为湖北和四川,但在四川、湖北尚未见到此类标本。本种花的描述系根据原记载。但原记载花5数,而子房4室,结合所见标本果均4数,可能5数是误写。