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肉托竹柏Nageia wallichiana

时间:2013-07-15 16:12来源:未知 作者:徐晔春 点击:
肉托竹柏,Nageia wallichiana,大叶罗汉松




中文名(Chinese Name):肉托竹柏
学名(Scientific Name):Nageia wallichiana (Presl) O. Kuntze
英文名(English Common Name):
别名(Chinese Common Name):大叶罗汉松
异名(Synonym):Decussocarpus wallichianus (C. Presl) de Laub.  Nageia blumei (Endl.) Gordon  Podocarpus blumei Endl.  Podocarpus wallichianus C. Presl  Podocarpus agathifolius Blume
科属(Family & Genus):罗汉松科Podocarpaceae竹柏属Nageia
形态特征(Description):乔木,树皮浅裂成条片状。叶对生或近对生,厚革质,披针状卵形或卵形,无主脉,有多数并列细脉,长9-14厘米,宽2.5-4.5厘米,上部渐窄,先端尾状渐尖,基部楔形,渐窄成短柄状,上面光绿色,下面灰绿色,两面有气孔线、幼叶更为明显。雄球花穗状、腋生,常3-5个簇生于总梗的上部或顶部,长0.5-1厘米,总梗长而明显,长1.2-1.7厘米;雌球花单生叶腋,梗长约1厘米,其上有数枚苞片,梗端通常着生2个胚珠,仅1个发育。种子近球形,熟时假种皮蓝紫色或紫红色,径约1.7厘米,着生于肥厚肉质种托之上,种托绿色,长约8毫米,径4-5毫米,有短梗。
分布(Distribution):产于云南南部西双版纳地区。越南、缅甸、印度也有分布。模式标本采自印度。
用途(Use):
引自中国植物志英文版FOC Vol. 4 Page 80
Nageia wallichiana (C. Presl) Kuntze, Revis. Gen. Pl. 2: 800. 1891.
肉托竹柏 rou tuo zhu bai | Podocarpaceae  | Nageia
Podocarpus wallichianus C. Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 3: 540. 1846; Decussocarpus wallichianus (C. Presl) de Laubenfels; Nageia blumei (Endlicher) Gordon; Podocarpus blumei Endlicher; P. latifolius Blume (1827) and Wallich (1830), not (Thunberg) R. Brown ex Mirbel (1825).
Trees to 50 m tall; trunk to at least 1 m d.b.h.; bark smooth, dark brown or gray-brown, tan or brown within, peeling in large, irregular flakes. Leaves decussate, 2-ranked, turned so that those on 1 side of branch have adaxial surface uppermost, those on the other side abaxial surface uppermost; petiole 5-10 mm; blade dark green adaxially, paler or grayish green abaxially, elliptic or lanceolate-elliptic, (6-)9-14 × (2-)3-5 cm in adult leaves, or to 23 × 7 cm in juvenile leaves, thick and leathery, stomatal lines present on both surfaces, base cuneate to attenuate, apex acuminate. Bracts of pollen- and seed-cone peduncles deciduous. Pollen cones axillary, in clusters of (1-)3-5 (-7) on peduncle 0.2-1 cm, 1 cone terminal, others decussate, cylindric, 0.8-1.8 cm × 4-5 mm; microsporophylls lanceolate, 2-3 mm. Seed-bearing structures axillary, solitary or rarely paired; peduncle (0.5-)1.2-1.7(-2) cm. Receptacle of 4-7 sterile scales and 1 or 2 fertile, subterminal scales, green initially, blackish when ripe, very succulent. Epimatium bluish purple or purplish red when ripe. Seed globose, 1.5-1.8 cm in diam., with small, proximal beak.
Evergreen subtropical forests on hillsides. S Yunnan (Xishuangbanna Daizu Zizhizhou) [Bangladesh, Cambodia, NE and SE India, Indonesia, Laos, Malaysia, Myanmar, Papua New Guinea, Philippines, Thailand, Vietnam]
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