灰背叉柱花Staurogyne hypoleuca R. Ben.
灰背叉柱花Staurogyne hypoleuca R. Ben.
1.灰背叉柱花 图版2: 1-4
Staurogyne bypoleuca R. Ben. in H. Lec Notul. Syst. 2: 338. 1911. et in Bull. Soc Bot. France 4. ser. 13( 60): 269. 1913; 中国高等植物图鉴4: 151. t. 5715. 1975.—— Ophiorrhiziphyllon hypoleuca R. Ben. in H. Lec, Fl. Gen. Indo-Chine 4: 637. 1935.
草本，高1米；茎枝无毛，有纵棱，多皮孔。叶对生，叶柄长3-6厘米；叶片椭圆形、长椭圆形或披针形，长13-17厘米，宽4.5-7厘米，先端渐尖或有时急尖，基部楔形，稍下延，两面无毛，上面绿色，背面苍白色，侧脉8-11对，边全缘或浅波状。总状花序顶生或于上部腋生，长达15厘米，不分枝或有2分枝，花疏生，花单生，互生，花轴有腺毛；花梗长2-3.5毫米；苞片线形，先端渐尖，长4-4．5毫米，宽约0.8毫米；小苞片线形，长约2毫米；花萼长5毫米，外面有疏柔毛及腺毛，裂片5，长三角状，长4毫米，基部宽1毫米，两侧的略短小，边缘有缘毛及腺毛；花冠白色，漏斗状，长约7毫米，冠檐裂片5，略不等，近圆形，长1.5毫米，宽1.3毫米；能育雄蕊4，略2强，着生于喉基部，花丝无毛，长3毫米，另2稍短，花药2室，药室长圆形，长1毫米，花丝在花药顶部着生；子房椭圆形，长2毫米，宽1毫米，无毛，2室。每室有2列胚珠，每列12枚；花柱长3毫米，无毛；柱头2裂。蒴果圆桶状，长5-7毫米，成2爿裂开。
产云南南部。生于海拔260-1750米的湿润山谷或林下。越南也有分布。模式标本采自越南河内。
《Flora of China》 Vol. 19 (2011)
Staurogyne hypoleuca Benoist Notul. Syst. (Paris). 2: 338. 1911.
灰背叉柱花 hui bei cha zhu hua
Ophiorrhiziphyllon hypoleucum (Benoist) Benoist.
Herbs to 1 m tall. Stems glabrous, lenticellate. Petiole 3-6 cm; leaf blade oblong, elliptic, or lanceolate, 13-17 × 4.5-7 cm, both surfaces glabrous, abaxially glaucous, adaxially green, secondary veins 8-11 on each side of midvein, base cuneate and slightly decurrent onto petiole, margin entire or undulate, apex acuminate to sometimes acute. Racemes terminal or in axils of apical leaves, to 15 cm, unbranched or branched at base; rachis gland-tipped pilose; bracts linear, 4-4.5 × ca. 0.8 mm, apex acuminate; bracteoles linear, ca. 2 mm. Flowers alternate. Pedicel 2-3.5 mm. Calyx ca. 5 mm, outside pubescent with gland-tipped trichomes; lobes triangular-ovate, ca. 4 × 1 mm, unequal with lateral 2 lobes smaller, margin ciliate with gland-tipped trichomes. Corolla white, funnel-shaped, ca. 7 mm; lobes suborbicular, ca. 1.5 × 1.3 mm, subequal. Stamens with longer pair ca. 3 mm and shorter pair ca. 2 mm; filaments glabrous; anther thecae ca. 1 mm, those of longer pair of stamens slightly exserted. Ovary ellipsoid, ca. 2 mm; ovules in 2 rows per locule, 12 in each row; style ca. 3 mm, glabrous; stigma 2-cleft. Capsule cylindric, 5-7 mm. Fl. Dec-Apr.
Forests; 300-1800 m. Yunnan [Vietnam].
科名：爵床科 Acanthaceae
属名：叉柱花属 Staurogyne
1.灰背叉柱花 图版2: 1-4
Staurogyne bypoleuca R. Ben. in H. Lec Notul. Syst. 2: 338. 1911. et in Bull. Soc Bot. France 4. ser. 13( 60): 269. 1913; 中国高等植物图鉴4: 151. t. 5715. 1975.—— Ophiorrhiziphyllon hypoleuca R. Ben. in H. Lec, Fl. Gen. Indo-Chine 4: 637. 1935.
草本，高1米；茎枝无毛，有纵棱，多皮孔。叶对生，叶柄长3-6厘米；叶片椭圆形、长椭圆形或披针形，长13-17厘米，宽4.5-7厘米，先端渐尖或有时急尖，基部楔形，稍下延，两面无毛，上面绿色，背面苍白色，侧脉8-11对，边全缘或浅波状。总状花序顶生或于上部腋生，长达15厘米，不分枝或有2分枝，花疏生，花单生，互生，花轴有腺毛；花梗长2-3.5毫米；苞片线形，先端渐尖，长4-4．5毫米，宽约0.8毫米；小苞片线形，长约2毫米；花萼长5毫米，外面有疏柔毛及腺毛，裂片5，长三角状，长4毫米，基部宽1毫米，两侧的略短小，边缘有缘毛及腺毛；花冠白色，漏斗状，长约7毫米，冠檐裂片5，略不等，近圆形，长1.5毫米，宽1.3毫米；能育雄蕊4，略2强，着生于喉基部，花丝无毛，长3毫米，另2稍短，花药2室，药室长圆形，长1毫米，花丝在花药顶部着生；子房椭圆形，长2毫米，宽1毫米，无毛，2室。每室有2列胚珠，每列12枚；花柱长3毫米，无毛；柱头2裂。蒴果圆桶状，长5-7毫米，成2爿裂开。
产云南南部。生于海拔260-1750米的湿润山谷或林下。越南也有分布。模式标本采自越南河内。
《Flora of China》 Vol. 19 (2011)
Staurogyne hypoleuca Benoist Notul. Syst. (Paris). 2: 338. 1911.
灰背叉柱花 hui bei cha zhu hua
Ophiorrhiziphyllon hypoleucum (Benoist) Benoist.
Herbs to 1 m tall. Stems glabrous, lenticellate. Petiole 3-6 cm; leaf blade oblong, elliptic, or lanceolate, 13-17 × 4.5-7 cm, both surfaces glabrous, abaxially glaucous, adaxially green, secondary veins 8-11 on each side of midvein, base cuneate and slightly decurrent onto petiole, margin entire or undulate, apex acuminate to sometimes acute. Racemes terminal or in axils of apical leaves, to 15 cm, unbranched or branched at base; rachis gland-tipped pilose; bracts linear, 4-4.5 × ca. 0.8 mm, apex acuminate; bracteoles linear, ca. 2 mm. Flowers alternate. Pedicel 2-3.5 mm. Calyx ca. 5 mm, outside pubescent with gland-tipped trichomes; lobes triangular-ovate, ca. 4 × 1 mm, unequal with lateral 2 lobes smaller, margin ciliate with gland-tipped trichomes. Corolla white, funnel-shaped, ca. 7 mm; lobes suborbicular, ca. 1.5 × 1.3 mm, subequal. Stamens with longer pair ca. 3 mm and shorter pair ca. 2 mm; filaments glabrous; anther thecae ca. 1 mm, those of longer pair of stamens slightly exserted. Ovary ellipsoid, ca. 2 mm; ovules in 2 rows per locule, 12 in each row; style ca. 3 mm, glabrous; stigma 2-cleft. Capsule cylindric, 5-7 mm. Fl. Dec-Apr.
Forests; 300-1800 m. Yunnan [Vietnam].
