討論:月桂葉灰木

山羊百科,林文智老師的植物、山岳、攝影紀錄

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26. Symplocos wikstroemiifolia Hayata 月桂葉灰木

Evergreen shrubs or trees, (andro-)dioecious. Twigs grayish brown, terete; young twigs soon turning to grayish brown, minutely appressed hairy, soon glabrescent, ridged below petioles. Leaves clustered at the end of branch; blades narrowly obovate or obovate, 4-15 cm, 1-4 cm wide, apex shortly caudate with blunt and also apiculate tip, base attenuate, marign slightly recurved, almost entire or crenulate with teeth 1-6 mm aprat; upper surface lustrous green, glabrous; lower surface somewhat glaucous, sparsely minutely appressed hairy; midrib usually prominent above at least at the base of blade, usually flat or impressed at distal part, very prominent beneath; nerves 8-10 pairs, meeting in an intramarginal vein, slightly prominent beneath; petioles minutely appressed hairy or glabrescent, 3-10 mm long. Inflorescence on twigs and/or from the axils of leaves, densely paniculate on male plants and racemose in female plants; axis appressed hairy, to 2 cm long; bracts caducous, ovate to elliptic, apex glandular, acute or obtuse, keeled, 1.5-2.5 mm long, adaxially glabrous, abaxially densely appressed hairy, margin ciliate; bracteoles 2, caducous, ovate to triangular, folded and keeled, apex glandular, acuminate, appressed hairy along the midrib, margin ciliate; pedicels to 2 mm long. Staminate flowers: calyx tube 0.5-0.8 mm high, glabrous or sparsely minute hairy;calyx limb ca. 1 mm long; lobes imbricate, ovate or widely ovate, apex obtuse, glabrous or minutely appressed hairy; corolla 2.5-3 mm long, deeply 5-lobed; lobes elliptic; stamens 15-20; disk glabrous, pulvinate; style lacking. Bisexual (female) flowers: calyx tube 1-1.5 mm high, glabrous or sparsely minute hairy; calyx limb ca. 1 mm long; lobes imbricate, ovate, obtuse at apex, ciliate, glabrous or sparsely with minute appressed hairs; corolla ca. 2.5 mm long, deeply 5-lobed; stamens usually 5, alternipetalous, but often abnormally developed; disk annular, glabrous or with minute hairs; style glabrous, ca. 1.5 mm long; ovary 3-locular. Fruits ovoid, 7-10 mm long, 4-6 mm in diameter; stone smooth; endocarp woody; seed 1, longitudinally curved, with similarly curved embryo.

Distributed in Taiwan, S. China, Indo-china and Malay Peninsula; in Taiwan 900-2,000 m in the northeastern part.

TAIPEI: Togokei, Agyoku, Simizu 2755; Mt. Peichaten-shan, 1400-1727 m, Li 3551, 3552, Lu 17327. ILAN: Mt. Taiping-shan, Suzuki 233, 963, 3816, 3999; Tayenshan, 950-1100 m, Kao K3223; Yuanianghu, 2000 m, Lu 2885. HUALIEN: Taroko, Sasaki s. n. TAITUNG: Mt. Shinkang-shan, Yamamoto 1026; Mt. Seikoo, Yamamoto 2304; Chinshuiying, Kanehira s. n.

古山矾组 Sect. Palaeosymplocos Brand

微毛山礬 Symplocos wikstroemiifolia Hayata

灌木或乔木;嫩枝、叶背和叶柄均被紧贴的细毛。叶纸质或薄革质,椭圆形,阔倒披针形或倒卵形,长4-12厘米,宽1.5-4厘米,先端短渐尖、急尖或圆钝,基部狭楔形,下延至叶柄,全缘或有不明显的波状浅锯齿;中脉在叶面微凸起或平坦,侧脉每边6-10条,在近叶缘处分叉网结;叶柄长4-7毫米。总状花序长1-2厘米,有分枝,上部的花无柄,花序轴、苞片和小苞片均被短柔毛;苞片长圆形或圆形,长1.2-2毫米,有缘毛;花萼长约2毫米,裂片阔卵形或近圆形,有缘毛,与萼筒等长或稍长于萼筒,萼筒无毛;花冠长约3毫米,5深裂几达基部,裂片倒卵状长圆形;雄蕊15-20枚,花盘环状,被疏柔毛或近无毛,花柱短于花冠。核果卵圆形,长5-10毫米,顶端宿萼裂片直立,熟时黑色或黑紫色。 产云南、贵州、湖南、广西、广东(海南)、福建、台湾、浙江。生于海拔900-2500米的密林中。模式标本采自台湾。

种子油可制肥皂;木材供建筑板料用。

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