南投黃肉楠

南投黃肉楠
原圖鏈接來自植物標本館

中文名:南投黃肉楠拉丁學名:Actinodaphne nantoensis (Hayata) Hayata 界:植物界門:被子植物門(Angiospermae) 綱:雙子葉植物綱(Magnoliopsida) 亞綱:木蘭亞綱(Magnoliidae) 目:樟目(Laurales) 科:樟科(Lauraceae) 屬:黃肉楠屬(Actinodaphne) 種:南投黃肉楠分布區域:中國台灣

南投黃肉楠(nán tóu huáng ròu nán，拉丁學名：Actinodaphne nantoensis (Hay.) Hay. ），是雙子葉植物綱、樟目、樟科、黃肉楠屬喬木。小枝褐紅色，無毛。頂芽圓錐形，芽鱗外面被絲狀短柔毛。葉互生，披針形。產於中國台灣。生於低海拔或中海拔的常綠闊葉林中。 ^[1]

南投黃肉楠形態特徵

南投黃肉楠墨線圖喬木。小枝褐紅色，無毛。頂芽圓錐形，芽鱗外面被絲狀短柔毛。

原圖鏈接來自植物標本館

原圖鏈接來自植物智

葉互生，披針形，長 7.5-13厘米，寬1.5-3厘米，先端漸尖，基部尖銳或闊楔形，革質，上面綠色，無毛，具光澤，下面灰綠色，有短柔毛，羽狀脈，中脈、側脈在上面下陷，下面隆起，側脈每邊約12條，斜展，先端弧曲，網脈在下面明顯；葉柄長5-20毫米，無毛。

傘形花序腋生，2-5個花序生於總梗上；總梗長3-20毫米，有短柔毛：苞片5，外面有白色絲狀短柔毛，內面無毛；每一傘形花序有花3-4朵；花梗與花被筒均密被黃褐色長柔毛；^[2]

花被裂片6，卵形或長圓形，長2.5毫米，寬1-1.2毫米，外面基部及中肋密被長柔毛，內面無毛。雄花：能育雄蕊9，花絲基部有長柔毛，第三輪基部的腺體無柄或近於無柄，腺體盾形；退化雌蕊無。^[3]

雌花：子房卵圓形，花柱細長，柱頭2淺裂，均無毛。果橢圓形；果托杯狀。花期2-3月。 ^[4]

分類文獻

Actinodaphne nantoensis (Hay.) Hay. Icon. Pl. Formos. 3: 165. 1913; 5:172. f. 60-a. 1915; Kanehira, Formos. Trees 415. 1917; rev. ed. 196. f. 143. 1936; H. L. Li, Woody Fl. Taiwan 200. 1963; 劉業經, 台灣木本植物志155. f.37. 1972.——Litsea nantoensis Hay. in Journ. Coll. Sci. Univ. Tokyo, 30 (1): 251. 1911.——Actinodaphne morrisonefsis Hay. var. nantoensis (Hay.) Yamamoto in Journ. Soc. Trop. Agr. 4: 52. 1932.——Fiwa nantoensis (Hay.) Nakai in Journ. Jap. Bot. 14: 193. 1938.

Iozoste acuminata Blume, Mus. Bot. 1: 364. 1851; Actinodaphne longifolia (Blume) Nakai; A. morrisonensis (Hayata) Hayata var. nantoensis (Hayata) Yamamoto; A. nantoensis (Hayata) Hayata; Fiwa longifolia (Blume) Nakai; F. nantoensis (Hayata) Nakai; Litsea acuminata (Blume) Kurata (1968), not (Teschner) Kostermans (1968); L. dolichocarpa Hayata; L. nantoensis Hayata; Machilus longifolia Blume; Tetradenia dolichocarpa (Hayata) Makino & Nemoto.

Trees. Branchlets glabrous. Leaves alternate; petiole 5-20 mm, glabrous; leaf blade lanceolate, 7.5-13 × 1.5-3 cm, pubescent abaxially, glabrous adaxially, pinninerved, lateral veins 12 pairs, reticulate-veined, base acute or broadly cuneate, apex acuminate. Umbels axillary, 3- or 4-flowered; involucral bracts 5, imbricate. Pedicel densely villous. Perianth segments 6, ovate or oblong, ca. 2.5 × 1-1.2 mm.

Male flowers: fertile stamens 9; filaments villous at base, of 3rd whorls each with 2 shield-shaped sessile or subsessile glands at base; rudimentary pistil lacking. Female flowers: staminodes 9; ovary ovoid, ovary, style, and stigma glabrous; style slender; stigma 2-lobed. Fruit ellipsoid, seated on cup-shaped perianth tube. Fl. Feb-Mar.

Evergreen broad-leaved forests; low to medium elevations. Taiwan [Japan].

Liu (Woody Fl. Taiwan, 155. 1972) recorded this species from the forest of Congaing, Yong』an, Fujian Province, at 700 m, but the specimen has not been seen by the present authors.Liu (Woody Fl. Taiwan, 155. 1972) recorded this species from the forest of Congaing, Yong』an, Fujian Province, at 700 m, but the specimen has not been seen by the present authors.