討論:曲莖馬藍

山羊百科，林文智老師的植物、山岳、攝影紀錄

曲茎兰嵌马蓝　　 Strobilanthes flexicaulis Hayata, Icon. Pl. Formosan. 5: 135. 1915.

Subshrubs to 1 m tall, much branched, anisophyllous. Stems 4-angled, winged, glabrous. Petiole 0.2-2.5 cm, glabrous or sparsely pubescent; leaf blade ovate, ovate-lanceolate, or ovate-elliptic, 3.5-18 × 1.8-5 cm, abaxially glaucous, adaxially sparsely pilose to subglabrous, secondary veins 4-6 on each side of midvein, base narrowly cuneate and decurrent onto petiole, margin serrate to crenate, apex acuminate. Inflorescences axillary or terminal, spikes, ca. 3 cm, few flowered; rachis often zigzag, glabrous to gland-tipped pilose; bracts persistent, basally merging into leaves, ovate to suborbicular, and shortly petiolate, apically becoming ovate to oblanceolate and sessile, 4-15 × 2-10 mm, apically diminishing in size, glabrous, apex obtuse; bracteoles linear, ca. 4 × 0.5 mm at anthesis but accrescent to ca. 14 × 1 mm, glabrous or sparsely gland-tipped pilose. Pedicel to 1 mm or flowers sessile. Calyx 0.9-1.1 cm at anthesis, strongly accrescent to ca. 3.2 cm in fruit, 2-lipped; lower lip 2-lobed almost to base, lobes linear; upper lip 3-lobed to middle, lobes linear, ca. 6 × 1 mm at anthesis, margin ciliate with gland-tipped trichomes but soon glabrescent, and apex obtuse. Corolla blue to purple, campanulate, ca. 4 cm, outside glabrous or glabrescent, inside glabrous except for trichomes retaining style; tube basally cylindric and ca. 4 mm wide for ca. 1.5 cm then gradually widened to ca. 1.5 cm at mouth; limb slightly 2-lipped; lower lip ca. 1 cm, 3-lobed, center lobe orbicular, ca. 6 × 7 mm, base contracted, and apex emarginate, lateral lobes orbicular, somewhat oblique, and apex emarginate; upper lip 2-lobed, lobes semiorbicular and ca. 5 × 8 mm. Stamens 4; shorter filament pair ca. 2 mm, glabrous; longer filament pair ca. 7 mm, hirsute; anther thecae oblong-linear, ca. 3.5 × 1 mm; pollen type 3. Ovary obovoid, glabrous; style filiform, ca. 3 cm, pubescent with gland-tipped trichomes; stigma subulate. Capsule linear-oblong, 1.6-2 cm, glabrous, 4-seeded. Seeds oblong-ovate in outline, ca. 3.5 × 2 mm, densely covered with appressed trichomes. Fl. Sep-Nov, fr. Feb. 2n = 30.

亚灌木状草本，高达1米，光滑无毛，多分枝。茎具棱，曲折。叶不等大，营养枝上叶具长柄，矩圆状卵形，长达18厘米，宽5厘米，顶端渐尖，边缘具疏锯齿，上面中肋和侧脉凸起，下面稍凸起，侧脉每边4-5条，弓形，被平卧微柔毛或近光滑无毛，暗棕色，下面苍白色，膜质；花枝上叶较小，无柄或近无柄，卵形至近圆形至肾形，基部心形。穗状花序密集，花无梗，苞片小而钝；小苞片2，线形，长8毫米，宽1毫米，几光滑无毛，1条中肋，基部与花萼相连，常被腺状柔毛；花萼圆柱状钟形，3深裂，上方2深裂，裂片线形，长达1厘米，顶端钝，外面散生腺毛-纤毛，后光滑无毛；下方通常3裂至中部，裂片线形，长6毫米，宽1毫米，顶端钝；花冠蓝或紫色，管状钟形，约长4厘米，顶部宽1.5厘米，冠管外面光滑无毛，里面具刚毛，冠管长1.5毫米，宽4毫米，向上逐渐扩大成钟形，上部近2唇形，上唇长4毫米，2裂，裂片半圆形长5毫米，宽8毫米，下唇长1厘米，宽与上唇同，3裂，中央裂片圆，长6毫米，宽7毫米，基部收缩，两侧裂片与中央不等，多少斜，冠檐裂片圆形，顶端微凹；雄蕊4，2强，长花丝约长7毫米，向下有刚毛，短花丝约长2毫米，光滑无毛；花药线状矩圆形，长3.5毫米，宽1毫米，顶端钝，基部2裂。花盘圆柱形，光滑无毛。子房倒卵形，花柱丝状，被短硬毛。柱头近钻形渐尖。蒴果线状圆柱形，约长2厘米；种子长圆状卵形，压扁，贴生微柔毛。