海南山姜Alpinia hainanensis

中文名(Chinese Name):海南山姜
学名(Scientific Name):Alpinia hainanensis K. Schum.
英文名(English Common Name):
别名(Chinese Common Name):小草蔻
异名(Synonym):Alpinia henryi K. Schum.  Alpinia kainantensis Masam.  Alpinia henryi var. densihispida H. Dong et G. J. Xu  Alpinia katsumadae Hayata  Languas katsumadae (Hayata) Merr.  Languas henryi (K. Schum.) Merr.  Languas hainanensis (K.Schum.) Merr.
科属(Family & Genus):姜科(Zingiberaceae)山姜属
形态特征(Description):叶片带形,长22-50厘米,宽2-4厘米,顶端渐尖并有一旋卷的尾状尖头,基部渐狭,两面均无毛;无柄或因叶片基部渐狭而成一假柄;叶舌膜质,长7-8毫米,顶端急尖。总状花序中等粗壮,长13-15厘米,花序轴“之”字形,被黄色、稍粗硬的绢毛,顶部具长圆状卵形的苞片,长4-4.5厘米,膜质,顶渐尖,无毛;小苞片长2厘米,顶有小尖头,红棕色;小花梗长不及2毫米;花萼筒钟状,顶端具2齿,一侧开裂至中部以上,外被黄色长柔毛,具缘毛;花冠管长9-10毫米,无毛;裂片长2.5-3厘米,喉部及侧生退化雄蕊被黄色小长柔毛;唇瓣倒卵形,长3厘米,顶浅2裂;花丝长1.5厘米,花药室长11毫米,药隔附属体长2毫米;腺体长3毫米。
分布(Distribution):产我国广东、海南,生于密林中。越南亦有分布。
引自中国植物志英文版:FOC Vol. 24 Page 339 
Alpinia hainanensis K. Schumann in Engler, Pflanzenr. 20 (IV. 46): 335. 1904.
草豆蔻 cao dou kou| Zingiberaceae  | Alpinia
Alpinia henryi K. Schumann; A. henryi var. densihispida H. Dong & G. J. Xu; A. kainantensis Masamune; A. katsumadae Hayata; Languas henryi (K. Schumann) Merrill; L. katsumadae (Hayata) Merrill.
Pseudostems to 3 m. Ligule (3--)5--10 mm, abaxially hirsute; petiole absent to 2 cm; leaf blade linear-lanceolate, 20--65 × 2--12 cm, glabrous or rarely abaxially sparsely hirsute, base obliquely attenuate, margin hairy, apex acuminate, with spirally caudate mucro. Racemes erect, 10--30 cm, yellow hirsute; bracts 4--4.5 cm, glabrous; bracteoles milky white, broadly elliptic, 2--3.5 cm, hirsute at base and gradually becoming glabrous toward mucronate apex. Pedicel 2--4 mm. Calyx campanulate, 2--3 cm, split on 1 side, abaxially hairy, apex 2-toothed. Corolla tube 8--10 mm; lobes lanceolate, 2.5--3 cm, margin ciliate. Lateral staminodes subulate, ca. 3 mm. Labellum marked with radiate, purple stripes from center to margin, triangular-ovate, 3.5--4.5 cm, apex shallowly 2-cleft. Filament ca. 1.5 cm; anther 1.2--1.5 cm. Ovary hirsute, ca. 5 mm in diam. Capsule globose, 2--3 cm in diam., yellow hirsute. Fl. Apr--Jun, fr. May--Aug. 2 n = 48*.
Dense or sparse forests. Guangdong, Guangxi, Hainan [Vietnam].
 海南山姜Alpinia hainanensis

海南山姜Alpinia hainanensis

海南山姜Alpinia hainanensis(责任编辑:徐晔春)

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