討論:日本灰木
山羊百科，林文智老師的植物、山岳、攝影紀錄
1. Symplocos lucida (Thunberg) Siebold & Zuccarini, 光亮山矾
Laurus lucida Thunberg in Murray, Syst. Veg. ed. 14, 383. 1784; Bobua ilicifolia (Hayata) Kanehira & Sasaki; Dicalix crassifolia (Bentham) Migo; D. ernestii (Dunn) Migo; D. setchuensis (Brand) Migo; D. shinodanus Migo; Symplocos acutangula Brand; S. coronigera H. Léveillé; S. crassifolia Bentham; S. discolor Brand; S. ernestii Dunn; S. henryi Brand; S. howii Merrill & Chun ex H. L. Li; S. ilicifolia Hayata; S. multipes Brand; S. phyllocalyx C. B. Clarke; S. potaninii Gontscharow; S. setchuensis Brand; S. shilanensis Y. C. Liu & F. Y. Lu; S. sinuata Brand; S tetragona Chen ex Y. F. Wu; S. theifolia D. Don; S. wilsonii Brand (December 1906), not Hemsley (July 1906); S. xanthoxantha H. Léveillé.
Shrubs or trees. Branchlets mostly yellowish green, slightly angled to winged, glabrous. Petiole 0.5--1.5 cm; leaf blade oblong to narrowly elliptic, 5--13 X 2--5 cm, leathery, glabrous, base cuneate, margin revolute and entire or sharply dentate, apex long acuminate to acute, midvein adaxially prominent and often sulcate, lateral veins 4--15 pairs. Inflorescences a basally branched spike or raceme, shortened to a fascicle or up to 6 cm, axis mostly puberulent to pubescent; bracts and bractlets persistent, broadly obovate, 1--3 mm, often glabrous. Ovary glabrous, 0.5--2 mm. Calyx 1--3 mm, glabrous; lobes oblong, slightly shorter than 3 mm. Corolla 3--5 mm. Stamens 10--80, 4--6 mm. Disc white villous, puberulent, or woolly-sericeous. Style ± as long as corolla to much shorter, glabrous or hairy towards base. Drupes ovoid to mostly ellipsoid, 0.5--1.8 X 0.4--1.3 cm, apex with persistent calyx lobes. Seeds and embryo usually U-shaped. Fl. Mar-Dec, fr. May-Dec. Mixed forests; 500--2600 m. Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [Bhutan, Cambodia, India, Indonesia, Japan, Laos, Malaysia, Myanmar, Thailand, Vietnam]
In many collections the petioles in Symplocos lucida are decurrent on the twigs, making the latter ridged to slightly winged. The name S. tetragona has been applied to the extreme condition, but after careful study it is apparent that, apart from winged branchlets, S. tetragona is indistinguishable from S. lucida.
- ナカハラクロキ Symplocos nakaharae (Hayata) Masam.
緑の小高木で全株無毛、樹皮は帯黒色で平滑、 2年枝は褐紫色、 1年枝は太く黄緑色で著しい稜角があり、冬芽は長さ5～1Omm。葉は倒卵状楕円形、倒披針状長楕円形、長楕円形まれに卵状楕円形または卵状長楕円形、長さ3～8 cm、幅1～4 cm、革質、鈍頭または急短鋭尖頭鈍端、鋭脚、疎な微鈍鋸歯縁またはときとしてやゝ全縁、乾けば黄緑色、 側 脈は４～5対でやゝ不明、中肋は両面に突出する。葉柄は長さ3～10 mm。集散花序は腋生、密花、長さ1 cm内外、 花軸、小使は無毛または多少有毛、小包は長さ2mm位、小便は長さ1 mm位、萼は5深裂し長さ2mm位。花冠は淡黄白色で径8 mm位、裂片は長さ3 mm位、雄芯は長さ4mm位、葯は長さ0.5 mm、花柱は長さ3mm位。果実は長楕円状楕円形、長さ6～10 mm、 黒熟し先端に宿存萼がある。各島。―日本、台湾。―奄美大島以南のものは葉の小さいナカハラクロキ型の ものが主である（琉球植物誌追加訂正版 初島住彦著から引用）。
棱角山矾 Symplocos tetragona Chen ex Y. F. Wu
注：ACC Symplocos lucida (Thunb.) Siebold et Zucc.
2.棱角山矾 Symplocos tetragona Chen ex Y. F. Wu
乔木。小枝黄绿色，粗壮，具4-5条棱。叶革质，狭椭圆形，长12-14厘米，宽3-5厘米，先端急尖，基部楔形，边缘具粗浅齿，两面均黄绿色；中脉在叶面凸起，侧脉每边9-14条，纤细，在叶面不明显，在叶背明显凸起；叶柄长约1厘米。穗状花序基部有分枝，长约6厘米，其分枝长约3厘米，密被短柔毛；苞片卵形，长约3毫米，小苞片横椭圆形，宽约3毫米；花萼5裂，长约4毫米，无毛，裂片圆形，稍长于萼筒或等于萼筒，有缘毛；花冠白色，长约6毫米，5深裂几达基部，有极短的花冠筒，裂片椭圆形；雄蕊40-50枚，花丝基部联生成五体雄蕊；花盘有毛和腺点，花柱长约3毫米，柱头盘状。核果长圆形，长约15毫米，直径约8毫米，顶端宿萼直立，核骨质，分开成3分核。花期3-4月，果期8-10月。
产湖南（道县）、江西（庐山）、浙江（杭州玉泉后山有栽培），生于海拔1000米以下的杂木林中。模式标本采自杭州玉泉（由庐山引来）。
