台灣油點草

台灣油點草
來自植物智的圖片

中文名:台灣油點草界:植物界門:被子植物門綱:單子葉植物綱目:百合目亞目:百合亞目科:百合科屬:油點草屬拼音:tái wān yóu diǎn cǎo 中文學名:Tricyrtis formosana Baker

台灣油點草(tái wān yóu diǎn cǎo)，學名 Tricyrtis formosana Baker，高達65厘米。莖通常較細而柔弱，上部生有柔毛，有時中下部具少數分枝。葉狹橢圓形，兩面綠色，上面近無毛，下面尤其脈上疏生柔毛，邊緣毛較長，生於莖下部的葉長9-13厘米，寬3-4.5厘米，先端漸尖或急尖，基部收狹而多少呈楔形，短柄狀，上部的葉基部通常心形抱莖。 ^[1]

台灣油點草形態特徵

植株高達65厘米。莖通常較細而柔弱，上部生有柔毛，有時中下部具少數分枝。葉狹橢圓形，兩面綠色，上面近無毛，下面尤其脈上疏生柔毛，邊緣毛較長；

生於莖下部的葉長9-13厘米，寬3-4.5厘米，先端漸尖或急尖，基部收狹而多少呈楔形，短柄狀，上部的葉基部通常心形抱莖。聚傘花序頂生和生於莖上部葉腋，具疏散的花；

花梗短，長0.8-1.8厘米；花被片淡紫色，內面的紫色斑點很不明顯，狹披針形，長2.2-2.6厘米，近直立或稍斜伸，外面疏生柔毛，外輪三片在基部外側的囊呈距狀；

雄蕊和雌蕊通常不伸出花被外；子房無毛。蒴果點垂。花果期（7-）10-11月。

Stem sometimes branched, usually flexuous, 25--80 cm, glabrous or slightly pubescent distally. Leaves oblanceolate or narrowly elliptic-oblanceolate to obovate, 8--13 × 2.5--4.5 cm, adaxially glabrescent, abaxially pubescent particularly along veins, base usually narrowed and subcuneate, margin ciliate, apex acuminate.

Cymes terminal and also axillary in distal part of stem, laxly several flowered; pedicels 1--6 cm, pubescent or glabrous. Flowers trumpet-shaped. Tepals purple-white, with purple spots adaxially, lanceolate, oblanceolate, or oblong, 2--4 cm × 4--11 mm, abaxially usually laxly pubescent; outer ones basally saccate. Stamens usually included. Ovary glabrous. Style subequaling stigmatic lobes. Capsule 2.5--3.5 × 5--6 mm. Fl. and fr. (?Apr--)Oct--Nov.

Forests, thickets, shaded places, roadsides; near sea level to 3000 m. Taiwan.

1 Stem usually less than 30 cm; inflorescence glandular 3b var. glandosa 小型油點草 + Stem 45--80 cm; inflorescence pubescent or glabrous. (2)

2(1) Tepals 2--2.5 cm; pedicel pubescent 3a var. formosana 台灣油點草 (原變種)

+ Tepals 3--4 cm; pedicel glabrous 3c var. grandiflora 大花油點草

分類文獻

Tricyrtis formosana Baker in Journ. Linn. Soc. Bot. 17: 465. 1879.