学名(拉丁名) | Lithocarpus ithyphyllus |
中文名 | 挺叶柯 |
命名人 | Chun ex H. T. Chang |
中文科名 | 壳斗科 |
拉丁属名 | Lithocarpus |
类型 | species |
拉丁科名 | Fagaceae |
中文属名 | 柯属 |
学名(拉丁名) | Lithocarpus ithyphyllus |
命名人 | Chun ex H.T.Chang (accepted name) |
拉丁属名 | Lithocarpus |
类型 | species |
拉丁科名 | Fagaceae |
学名(拉丁名) | Lithocarpus ithyphyllus |
命名人 | Chun ex H.T.Chang |
发表年份 | 1960(年) |
拉丁属名 | Lithocarpus |
类型 | species |
拉丁科名 | Fagaceae |
学名(拉丁名) | Lithocarpus ithyphyllus |
中文名 | 挺叶柯 |
拉丁属名 | Lithocarpus |
类型 | species |
拉丁科名 | Fagaceae |
学名(拉丁名) | Lithocarpus ithyphyllus |
中文名 | 挺叶柯 |
中文科名 | 壳斗科 |
拉丁属名 | Lithocarpus |
类型 | species |
拉丁科名 | Fagaceae |
中文属名 | 柯属 |
学名(拉丁名) | Lithocarpus ithyphyllus |
发表年份 | 1960(年) |
拉丁属名 | Lithocarpus |
类型 | species |
拉丁科名 | Fagaceae |
Trees to 15 m tall, glabrous except for inflorescences. Branches of current year conspicuously sulcate. Petiole rarely to 3 mm; leaf blade narrowly oblong, 1-2 × 5-20 cm, rigidly leathery, concolorous, abaxially often white farinose, base rounded to auriculate, margin entire and recurved, apex narrowed and obtuse; secondary veins 12-18 on each side of midvein, slender, evident, adaxially impressed; tertiary veins abaxially not visible or very slender, evident. Male inflorescences sometimes androgynous, often congested at apex of branches, to 10 cm; rachis puberulent. Female inflorescence with cupules in clusters of ca. 3. Infructescences 6-8 cm; rachis puberulent, ca. 2 mm thick. Cupule plate- to shallowly bowl-shaped, 2-4 × 5-8 mm, covering base of nut, wall to 1 mm thick near base; bracts imbricate and appressed or sometimes connate into 3 or 4 concentric rings, triangular, small. Nut narrowly ellipsoid to conical, 1.2-1.8 × 1-1.2 cm, often ± white farinose, base flat, apex pointed, wall ca. 0.5 mm thick; scar 3-4 mm in diam., concave. Fl. May-Jun, fr. Aug-Sep of following year.
* Broad-leaved evergreen forests, more frequent in secondary forests; 400-900 m. E Guangdong
91. 挺叶柯 咸鱼柯 图版55
Lithocarpus ithyphyllus Chun ex H. T. Chang in Journ. Sun Yat-Sen Univ. Nat. Sci. 1: 32. 1960.
乔木,高达15米,胸径10厘米;托叶较迟脱落,当年生枝有明显的纵沟棱,枝、叶无毛。叶硬革质,狭长椭圆形,两侧边缘近于平行,长为其宽度的5-10倍,宽1-2厘米,顶部狭而钝,基部圆或浅耳垂状,全缘,叶缘向背卷,中脉在叶面凸起,侧脉每边12-18条,纤细,在叶面凹陷,支脉不明显或极纤细,两面同色,二年生叶干后叶面常有白色粉霜;叶柄很少达3毫米。有时雌雄同序,花序长稀达10厘米,花序轴密被微柔毛,雄花序常多穗集生于枝顶部;雌花每3朵一簇。壳斗碟状或浅碗状,高2-4毫米,宽5-8毫米,小苞片三角形,甚小,紧贴,覆瓦状排列,有时连生成3-4个圆环,干后略油润;坚果长椭圆形或高略过于宽的圆锥形,高12-18毫米,宽10-12毫米,顶端尖,基部略平坦,栗褐色,常有淡薄的白色粉霜,果脐深达2.5毫米,口径3-4毫米。花期5-6月,果次年8-9月成熟。
产广东东部(龙门、紫金、新丰等地)。生于海拔400-900米山地常绿阔叶林中,次生林较常见。