討論:楊桐葉灰木

山羊百科，林文智老師的植物、山岳、攝影紀錄

6. Symplocos congesta Benth. 楊桐葉灰木

Evergreen small trees. Twigs grayish brown, terete or slightly ridged below petioles; young twigs brown to grayish brown, ferrugineous tomentellous, the indument soon caducous and irregularly distributed on twigs. Terminal buds ovate, with a few scales densely ferrugineous tomentose, apex blunt. Leaves: blades turning brown when dry, elliptic, 6.5-15 cm long, 2-6 cm wide, apex acuminate or caudate with apiculate tip, base acute to attenuate, margin slightly recurved, entire or sometimes glandular-serrate; upper surface glabrous, lower surface cobwebby hairy on midrib in flushing but soon glabrescent; midrib impressed above, prominent beneath; nerves 7-10 pairs meeting in an intramarginal vein, prominent beneath with reticulation; petioles glabrescent, 5-10 mm long. Inflorescence a condensed spike, on twig and/or from axils of leaves, the axis to 5 mm long; bracts semi-orbicular or widely ovate, 2-2.5 mm long, bracteoles orbicular to ovate, 1.5-2 mm long, keeled, apex obtuse; both persistent, adaxially glabrous, abaxially tomentose, marign often with a few glands; calyx tube glabrous or sparsely hairy, ca. 1 mm high; limb 5-lobed, 2.5-3.5 mm, the lobes valvate, ovate, glabrous, 1.5-2.5 mm long; corolla 4-5 mm long, deeply 5-lobed, glabrous or appressed hairy toward the base; stamens 30-60; disk annular to pulvinate, glabrous; style glabrous 4-5 mm long. Fruits cylindrical, crowned by persistent calyx lobes, 7-11 mm long excluding calyx limb, 3-4 mm in diameter; stone with 4-10 ribs; endocarp woody; seed 1, straight with straight embryo.

Distributed in Taiwan, S. China and Indo-china; in Taiwan, 100-2,100m altitude in only southwestern part.

TAICHUNG: Dongmaushan, Endo 2236; Nanhutashan, Sasaki s. n.; Lienhuachih, Mori s. n. NANTOU: Tehuashe to Shuishetashan, Chiang 127; Mt. Meiyen, Kuo 6973; Kuantaochi, Hsien 1513; Lienhuachih, Sasaki s. n., Matsumura s. n.; Shishetashan, Liu & Lin s. n. CHIAYI: Fenchihu, Huang & Huang 14006; Tatongshan, Wang 513. KAOHSIUNG: Tengchih, Huang et al. 13824; Tengchu, Ohashi et al. 12765; Tashulinshan, Matsuda s. n. PINGTUNG: Nanjenshan, Huang 9002, Yang 1804, Tsifongbi, Hu & Yang 658; en route to Tawushan, Huang et al. 13568; Tashulinshan, Sasaki s. n.; Chinshuiying, Wang et al. 7377; Peitawushan, Peng 13200. TAITUNG: Tonmaushan, Huang 613; Chinshuiying, Simizu 3720, 3737; Tawushan, Matuda 1479; Tajen Hsiang, Wang 1424; Kutsulunshan, Kao & Chung 1123.

团伞组 Sect. Glomeratae Y. F. Wu

密花山礬 Symplocos congesta Benth.

常绿乔木或灌木；幼枝、芽、均被褐色皱曲的柔毛。叶片纸质，两面均无毛，椭圆形或倒卵形，长8-10（17）厘米，宽2-6厘米，先端渐尖或急尖，基部楔形或阔楔形，通常全缘或很少疏生细尖锯齿；中脉和侧脉在叶面均凹下，侧脉每边5-10条，与中脉交成40°-45°角，在近叶缘处向上弯拱近环结；叶柄长1-1.5厘米。团伞花序腋生于近枝端的叶腋；苞片和小苞片均被褐色柔毛，边缘有4-5枚长圆形、透明的腺点；花萼有时红褐色，长3-4毫米，无毛，有纵条纹，裂片卵形或阔卵形，覆瓦状排列；花冠白色，长5-6毫米，5深裂几达基部，裂片椭圆形；雄蕊约50枚，花丝基部稍联合；子房3室；花盘无毛。核果熟时紫蓝色，多汁，圆柱形，长8-13毫米，顶端宿萼裂片直立；核约有10条纵棱。花期8-11月，果期翌年1-2月。 产云南、广西、广东（海南及香港）、湖南、江西、福建、台湾。生于海拔200-1500米的密林中。模式标本采自广东香港。 根药用，治跌打。

本种幼枝、芽被褐色皱曲柔毛；叶柄及叶缘无腺齿；萼筒及花盘无腺点；雄蕊约50枚；核果熟时蓝色。分布于我国南部及东南部，海拔200-1500米。其形态特征与地理分布与团花山矾均明显不同，应作为独立的种，不同意H. P. Nooteboom 作为团花山矾 S. glomerata King的变种。