假石柑檢視原始碼討論檢視歷史

假石柑

原圖鏈接 來自植物標本館

中文名:假石柑 拉丁學名:Pothoidium lobbianum Schott 界:植物界 科:天南星科 屬:假石柑屬 種:假石柑 中國植物志:13(2):021

假石柑(jiǎ shí gān，學名 Pothoidium lobbianum Schott），攀援灌木，長10-15米，小枝伸長，具條紋，節間長0.75-1厘米。

假石柑植物形態

攀援灌木，長10-15米，小枝伸長，具條紋，節間長0.75-1厘米。葉堅硬、光滑：葉片長圓狀三角形，長2.5-4厘米，寬7.5毫米，比葉柄短而狹；

原圖鏈接 來自植物標本館

葉柄長7.5-10厘米，寬1厘米，基部稍狹，上面截平。花枝伸長，基部具鱗葉，後者卵形和長圓形，鈍；中部具正常葉，葉片極短；上部具苞片或否，較下部的長約10厘米，上部的長約1.5厘米；

原圖鏈接 來自植物標本館

果長圓形，長1.2厘米，直徑0.6厘米，內有長倒卵形種子1枚。花期2-5月，果7-10月成熟。

花序多數，於枝頂排列成總狀花序式。果期更為明顯。佛焰苞短卵形，銳尖，長5-7.5毫米，有時退廢。肉穗花序細弱，長1.5-2.5厘米。

分類文獻

Pothoidium lobbianum Schott in Osterr. Bot. Wochenbl. 7: t. 57. 1857; Engl. in DC., Monogr. Phan. 2: 94. 1879, in Engl. et Plantl, Pflzfam. 2 (3) : 114. 1879, in Engl. , Bot. Jahrb. 25: 5. 1898, in Engl. , Pflanzenr. 21 (4, 23B): 46, fig. 18. 1905; Matsum. et Hayata in Journ. Coll. Sci. Univ. Tokyo 22: 460. 1906.

Climbers. Branches elongated, striate, internodes 7.5-10 mm. Leaves leathery; petiole 7.5-10 × ca. 1 cm, base angustate, apex truncate; leaf blade triangular-lanceolate, much smaller and shorter than petiole, 2.5-4 × ca. 7.5 mm. Inflorescences several to many, borne in a terminal branching system, proximal inflorescences axillary to a foliage leaf, distal ones either subtended by a cataphyll or without a subtending leaf, peduncular axis slender, consisting of 1 to several internodes, sometimes subtended by a prophyll, sometimes also bearing a cataphyll ± halfway up.

Spathe occurrence irregular, often absent, widely spreading, linear-lanceolate or broadly ovate, 5-7.5 mm, margins usually revolute, apex acute. Spadix apparently often functionally unisexual, cylindric, 1.5-2.5 cm, sessile to long stipitate when subtended by spathe. Flowers apparently usually unisexual, sometimes bisexual, congested, with a perigone of 6 free tepals; male flowers with well-developed anthers and apparently sterile ovary, stamens 3-6, free, number often varying on a single spadix; female flowers with large fertile ovary and lacking stamens. Berry ca. 1.2 cm × 6 mm. Seed solitary, ovoid. Fl. Feb-May, fr. Jul-Oct.

S Taiwan (Lan Yu) [Indonesia (Maluku, Sulawesi), Philippines].

假石柑產地分布

產我國台灣紅頭嶼一帶。也分布於菲律賓群島和印度尼西亞的蘇拉威西島至馬魯古群島。