翅莖異形木
翅莖異形木 |
中文學名:翅莖異形木 界:植物界 門:被子植物門 綱:雙子葉植物綱 目:桃金娘目 科:野牡丹科 屬:異形木屬 |
翅莖異形木,拉丁文名:Allomorphia eupteroton Guillaum. 野牡丹科、異形木屬灌木,產雲南南部。[1]
目錄
翅莖異形木形態特徵
灌木,高約1.7米;莖四棱形,棱上有狹翅,無毛或幼時密被糠秕,分枝多。[2]
葉片堅紙質,卵形或橢圓狀卵形,頂端漸尖,基部鈍至微心形,長12-18.5厘米,寬5.5-8.5厘米,邊緣具密細齒或幾全緣,5基出脈,葉面無毛或僅基出脈上被糠秕,基出脈微凹,側脈微凸,背面僅脈上被糠秕,基出脈、側脈隆起,糠秕脫落後常成瘤狀橫紋,葉柄長1.5-4厘米,密被糠秕,具槽,槽兩側多少具髯毛。
花未見;果序為由聚傘花序組成的狹圓錐狀果序,長18-25厘米,寬約4厘米,軸及小傘梗四棱形,棱上有狹翅,被糠批,每個聚傘果序長1.5-2.5厘米。
蒴果卵狀球形,長約3.5-4毫米,直徑約4毫米,為宿存萼所包;宿存萼棕色,長約5毫米,萼片寬三角形,有時多少被糠秕,具8條明顯的縱肋。花期未詳,果期約4月。
Allomorphia eupteroton Guillaum. var. teretipetiolata C. Y. Wu et C. Chen, 雲南植物志2: 93. 圖版25, 1. 1979.
Shrubs 1.7-2.5 m tall. Branchlets puberulous 4-winged, wings 1-4 mm wide. Petiole 1.5-10 cm, winged, wings 3-9 mm wide; leaf blade ovate to elliptic, 10-25 × 5-16 cm, abaxially minutely furfuraceous on veins, adaxially subglabrous when mature, secondary veins 2 on each side of midvein, abaxially prominent, and adaxially depressed, base attenuate to rounded, margin obtuse serrulate, apex shortly acuminate. Inflorescences 10-25 cm, ca. 10 cm wide at base, to 30 × 30 cm in fruit; peduncle 4-angled or 4-winged. Flowers clustered in small umbels near apex of inflorescence branchlets. Bracts and bracteoles minute, deciduous. Flowers 4-merous. Pedicel to 1.5 mm. Hypanthium cylindric, 5-8 mm, apically barely 8-ribbed, puberulous or glabrous. Calyx rim with 4 cusps to 0.5 mm. Petals pinkish or white, ca. 3 × 3 mm. Stamens 8, subisomorphic, 5-7 mm; anthers white or sometimes pinkish, 4-5 mm, with short spurs at base. Capsule suburceolate to cylindric, 6-8 mm, crowned by persistent 8-angled calyx rim.
翅莖異形木生長環境
生於海拔約700米的山坡陽處,灌木叢中。