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茎花守宫木

中文学名:茎花守宫木

拉丁学名:Sauropus

bonii Beille

界:植物界

门:被子植物门

纲:双子叶植物纲

亚 纲:原始花被亚纲

目:大戟目

亚 目:大戟亚目

科:大戟科

亚 科:叶下珠亚科

族:叶下珠族

属:守宫木属

茎花守宫木(jīng huā shǒu gōng mù,学名:Sauropus bonii Beille)大戟科守宫木属植物。叶片纸质,长椭圆形、卵状披针形或倒披针形,长7-14厘米,宽2.5-5厘米;主要分布于广西龙州天峨越南泰国等地。 [1]

茎花守宫木形态特征

灌木,高达3米;茎皮灰色;枝条具棱,绿色;全株无毛。

叶片纸质,长椭圆形、卵状披针形或倒披针形,长7-14厘米,宽2.5-5厘米,顶端渐尖或短渐尖,基部宽楔形,上面深绿色,下面淡绿色;侧脉每边7-11条,斜升至叶缘前弯曲连结;叶柄长3-6毫米;托叶三角形,长3-5毫米,着生于叶柄基部两侧。

总状聚伞花序着生于茎的下部或基部,长6-15厘米,常下垂,雌雄同序;花序梗和花梗的基部均分别有覆瓦状排列的苞片和小苞片;

雄花:花梗丝状,长2-4毫米;花萼杯状,边缘波状,直径3-5毫米,膜质,淡黄色,有红色斑纹;花盘6浅裂,贴生于花萼上;雄蕊3,合生呈柱状,花药长圆形;

雌花:花梗长2-3毫米;花萼钟状,直径3-5毫米,6裂,裂片匙形或倒卵形,2轮,外轮的长3-5毫米,内轮的长2-4毫米;子房卵圆形或圆球形,3室,每室2颗胚珠,花柱3,分离,顶端2裂,裂片向下弯。

蒴果近圆球状,直径约2厘米,高约1.5厘米,6爿裂。 [2]

Sauropus bonii Beille in Lec. Fl. Gen. Indo-Chine 5: 651. 1927; Airy Shaw in Kew Bull. 26 (2): 334. 1972; P. T. Li in Guihaia 3(3): 168. 1983, et in Acta Phytotax. Sin. 25: 133. 1987.

Shrubs to 3 m tall, monoecious, glabrous throughout; stem gray; branches angular, green. Stipules triangular, 3-5 mm; petiole 3-6 mm; leaf blade oblong-elliptic, ovate-lanceolate, or oblanceolate, 7-14 × 2.5-5 cm, papery, abaxially greenish, dark green adaxially, base broadly cuneate, apex acuminate or shortly so; venation pinnate, lateral veins 7-11 pairs, obliquely ascending, arcuately anastomosing to before margins. Inflorescences cauliflorous, from base to lower part of stem, narrow racemelike thyrses, usually pendent, 6-15 cm, bisexual; peduncles and pedicels with imbricate bracts and bracteoles. Male flowers: pedicels filamentous, 2-34 mm; calyx cup-shaped, 3-5 mm in diam., margins undulate, membranous, yellowish, with red streak; disk shallowly 6-fid, adnate to calyx; stamens 3; filaments connate into a cylinder; anthers oblong. Female flowers: pedicels 2-3 mm; calyx campanulate, 3-5 mm in diam., 6-lobed; sepals biseriate, spatulate or obovate, outer 3-5 mm, inner 2-4 mm; ovary ovoid or globose, 3-locular; styles 3, free, bifid at apex, arms recurved. Capsules subglobose, ca. 1.5 × 2 cm, prominently 6-valved when mature. Fl. Apr-Aug, fr. Jun-Oct.

Forests or scrubby slopes on limestone; 200-500 m. NW and SW Guangxi (Longzhou, Tian’e) [Vietnam].

Records of Sauropus bonii from Thailand seem to be based on a misidentification of S. disciflorus Welzen, which has much shorter inflorescences.

茎花守宫木生长环境

生长于海拔200-500米石灰岩山地林下或山坡灌木丛中。

茎花守宫木分布范围

分布于广西龙州天峨越南泰国等地。

参考来源

  1. 茎花守宫木, 植物智, 2020-01-18
  2. 《中国植物志》 第44(1)卷 (1994) >> 168页 PDF >> 茎花守宫木 Sauropus bonii