栏目

五列木Pentaphylax euryoides Gardn. et Champ.

五列木Pentaphylax euryoides Gardn. et Champ.

别名:五裂木;毛生木;

科名:五列木科 Pentaphylacaceae

属名:五列木属 Pentaphylax

《中国植物志》第45(1)卷136页
  1. 五列木(海南植物志)图版39:1-6
  Pentaphylax euryoides Gardn. et Champ. in Hook. Journ. Bot. et Kew Card. Misc. 1: 245. 1849; Benth. Fl. Hongk. 28. 1861; Champ. in Trans. Linn. Soc. Lond. 21: 116, t. 12. 1853; Forb. et Hemsl. in Journ. Linn. Soc. 23: 77. 1886; Merr. in Lingn. Sci. Journ. 5: 115. 1927; Chun in Sunyats. 1: 161. 1933; Mattf. in Engl. u. Prantl, Nat. Pflanzenfam. ed. 2, 20b: 21, f. 5. 1942; Gagnep. Fl. Gen Indo-Chine Suppl. 333. 1943; V. Steenis in Fl. Malesiana 1 (5) : 123, f. 1. 1955;海南植物志1: 510. 1964;中国高等植物图鉴2: 641,图3011. 1972. ——P. malayana Ridl. in Journ. Linn. Soc. 38: 305. 1908, et Fl. Mal. Pen. 1: 206, f. 21 1922.——P. arborea Ridl., Fl. Mal. Pen. 5: 291. 1925. ——P. racemosa Merr. et Chun in Sunyats. 1: 66. 1930, incl. P. montana Ridl. errore; Merr. in Journ. Arn. Arb. 19: 41. 1938. ——P. spicata Merr. in Journ. Arn. Arb. 19: 40. 1938; Gagnep., Fl. Gen. Indo-Chine Suppl. 333, f. 32, 9-16. 1943.
  常绿乔木或灌木,高4-10米; 小枝圆柱形,灰褐色,无毛。单叶互生,革质,卵形或卵状长圆形或长圆状披针形,长5-9厘米,宽2-5厘米,先端尾状渐尖,基部圆形或阔楔形,全缘略反卷,无毛,侧脉斜升,不显;叶柄长1-1.5厘米,具皱纹,上面具槽。总状花序腋生或顶生,长4.5-7厘米,无毛或被极稀疏微柔毛;花白色,花梗长约0.5毫米;小苞片2,小,三角形,长1-1.5毫米,外面具白色鳞片或无,里面疏被白色平伏极细微柔毛,边缘有白色睫毛;萼片5,圆形,径1.5-2.5毫米,先端微凹或心形,外面被细密灰白色鳞片,里面疏被白色平伏微柔毛,边缘具白色睫毛;花瓣长圆状披针形或倒披针形,长4-5毫米,宽1.5-2毫米,先端钝或微凹或浅心形,无毛;雄蕊5,花丝长圆形,花瓣状,长2.5-3.5毫米,宽约1毫米,花药小,2室,分离,径约0.5毫米;子房无毛,长约1毫米,径约2.5毫米,花柱柱状,具5棱,长约2毫米,柱头5裂。蒴果椭圆状,长6-9毫米,径4-5毫米,褐黑色,基部具宿存萼片,成熟后沿室背中脉5裂,中脉和中轴宿存,内果皮和隔膜木质;种子线状长圆形,长约6毫米,宽1.5-2毫米,红棕色,先端极压扁或呈翅状。
  产云南、贵州、广西、广东、湖南、江西、福建;生于海拔650-2000米的密林中。分布于越南、马来半岛及印度尼西亚(苏门答腊南部)。
  木材坚硬,可供建筑、家俱或农具用材。

《Flora of China》 Vol. 12 (2007)
Pentaphylax euryoides  Gardner & Champion
五列木   wu lie mu
Pentaphylax arborea Ridley; P. malayana Ridley; P. racemosa Merrill & Chun; P. spicata Merrill.
Shrubs or trees, 4-10 m tall. Branchlets grayish brown, terete, glabrous. Petiole 1-1.5 cm, adaxially grooved; leaf blade ovate, oblong-ovate, or oblong-lanceolate, 5-9 × 2-5 cm, leathery, abaxially pale green, adaxially dark green, both surfaces glabrous, secondary veins obscure on both surfaces, base rounded to broadly cuneate, margin entire and slightly revolute, apex caudate. Pedicel ca. 0.5 mm; bracteoles triangular, 1-1.5 mm, outside with white scales, inside sparsely white puberulent, margin ciliolate. Sepals 5, orbicular, 1.5-2.5 mm in diam.,
outside with dense grayish white scales, inside sparsely white appressed puberulent, margin ciliolate, apex retuse to 2-cleft. Petals oblong-lanceolate to oblanceolate, 4-5 × 1.5-2 mm, glabrous, apex retuse to 2-cleft. Stamens 5; filaments oblong, petaloid, 2.5-3.5 × ca. 1 mm; anthers ca. 0.5 mm in diam., 2-celled, distinct. Ovary ca. 1 × 2.5 mm, glabrous; style columnar, ca. 2 mm, 5-ribbed, apically 5-lobed. Capsule purplish brown to dark brown, ellipsoid, 6-9 × 4-5 mm, valves dehiscing along either side of midrib leaving persistent midrib between valves; columella persistent, 5-edged. Seeds reddish brown, linear-oblong, ca. 9 × 1.5-2 mm, compressed, apex very compressed or winged.
Evergreen broad-leaved forests; 600-2000 m. S Fujian, Guangdong, Guangxi, Guizhou, Hainan, S Hunan, S Jiangxi, Yunnan [Indonesia (N Sumatra), Malaysia, Vietnam].

TOP