扁果青岡
扁果青岡 |
中文名:扁果青岡 拉丁學名:Cyclobalanopsis chapensis (Hick. et A. Camus) Y. C. Hsu et H. W. Jen 界:植物界 門:被子植物門 Angiospermae 綱:雙子葉植物綱 Dicotyledoneae 亞 綱:原始花被亞綱 Archichlamydeae 目:山毛櫸目 Fagales 科:殼斗科 Fagaceae 屬:青岡屬 Cyclobalanopsis 種:扁果青岡 |
扁果青岡(biǎn guǒ qīng gāng,學名 Cyclobalanopsis chapensis (Hickel et A. Camus) Y. C. Hsu et H. W. Jen,異名:Quercus chapensis Cyclobalanopsis shiangpyngensis Cyclobalanopsis koumeii )為青岡屬下常綠喬木,產於雲南,國外分布於越南。生於海拔1300-2000米溝谷濕潤森林中。 [1]
目錄
扁果青岡形態特徵
扁果青岡是 常綠喬木,高達20米。 小枝有溝槽及長圓形淡褐色皮孔,無毛或幼時有柔毛。
葉片革質,長橢圓形或長橢圓狀披針形,長9-20厘米,寬2-4 (-5) 厘米,頂端漸尖,基部寬楔形或近圓形,葉緣1/3以上有細鋸齒,中脈、側脈在葉面均微凸起,在葉背顯著凸起,側脈每邊15-20條,葉背支脈明顯,老葉兩面無毛;葉柄長1-2.5厘米,無毛。
殼斗盤形,包着堅果基部,直徑2.5-3.5厘米,高5-12毫米,壁厚3-5毫米,內壁被黃色絲狀毛;小苞片合生成6-9條同心環帶,環帶邊緣牙齒狀,被稀疏絨毛。
堅果扁球形,直徑1.5-2.7厘米,高1-2.2厘米,頂端圓,基部平截,無毛或基部有疏毛,果臍平或微凹,直徑約 1.5厘米。 [2]
分類文獻
Cyclobalanopsis chapensis (Hick. et A. Camus) Y. C. Hsu et H. W. Jen in Acta Phytotax. Sin. 14(2): 78. 1976 in clavi, cit. in adnot.;雲南植物志2: 316.圖99, 1-4. 1979;中國樹木志2: 2295. 1985. ——Quercus chapensis Hick. et A. Camus in Bull. Mus. Hist. Nat. Paris 29: 598. 1923; et in Lecomte, Fl. Gen. Indo-Chine 5: 953. 1930; A. Camus, Chenes 1: 320. 1936-38.中國高等植物圖鑑, 補編1: 122. 1982. ——Cyclobalanopsis koumeii Hu in Acta Phytotax. Sin. 1: 151. 1951. ——C. shianpyngensis Hu l. c. p. 153.
Quercus chapensis Hickel & A. Camus, Bull. Mus. Natl. Hist. Nat. 29: 598. 1923; Cyclobalanopsis koumeii Hu; C. shiangpyngensis Hu.
Trees to 20 m tall. Branchlets sulcate, villous or glabrous when young, lenticellate; lenticels grayish brown, oblong. Petiole 1-2.5 cm, glabrous; leaf blade oblong-elliptic to lanceolate, 9-20 × 2-4(-5) cm, leathery to thickly papery, glabrescent, base broadly cuneate to subrounded, margin apical 2/3 serrulate, apex acuminate; midvein and secondary veins abaxially prominent, adaxially slightly raised; secondary veins 15-20 on each side of midvein; tertiary veins abaxially conspicuous. Cupule saucer-shaped, 5-12 mm × 2.5-3.5 cm, covering base of nut, outside sparsely orangish brown tomentose, inside orangish brown sericeous, wall 3-5 mm thick; bracts in 6-9 rings, margin dentate. Nut oblate, 1-2.2 × 1.5-2.7 cm, glabrous or basally pilose, base flat, apex rounded to slightly depressed; scar ca. 1.5 cm in diam., flat or depressed; stylopodium ca. 3 mm in diam., umbonate. Fr. Oct-Dec.
Wet broad-leaved evergreen forests in mountain valleys; 1300-2000 m. S to SE Yunnan [Vietnam]
扁果青岡生長環境
生於海拔1 300-2 000米的溝谷濕潤常綠闊葉林中。[3]