基毛杜鹃Rhododendron rigidum

中文名(Chinese Name):基毛杜鹃
学名(Scientific Name):Rhododendron rigidum Franch.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Rhododendron sycnanthum I. B. Balfour et W. W. Sm.  Rhododendron racemosum var. rigidum (Franch.) Rehnelt  Rhododendron hesperium Balf. f. et Forrest  Rhododendron caeruleum H. Lév.  Rhododendron eriandrum H. Lév. ex Hutch.  Rhododendron rarosquameum Balf. f.
科属Family & Genus):杜鹃花科(Ericaceae)杜鹃属
形态特征Description):灌木,偶成小乔木,高1-2(-10)米。幼枝无鳞片或疏生鳞片,无毛或有微柔毛,老枝光滑。叶椭圆形,长圆状椭圆形、长圆状披针形或倒披针形,长2.5-6.8厘米,宽1-3.2厘米,顶端钝、锐尖、短渐尖或圆,有短尖头,基部渐狭或钝圆,上面褐绿色,无鳞片或疏生鳞片,无毛或沿中脉被微毛,下面灰绿色,网脉纤细而清晰,疏生鳞片,鳞片不等大,大或中等大小,相距为其直径的4-8倍,稀2-3倍;叶柄长2-12毫米,无鳞片或疏生鳞片,无毛或稀有微毛。花序顶生或同时枝顶腋生,2-6花,短总状;花序轴长2-4毫米;花梗长0.5-2厘米,无鳞片或疏生鳞片;花萼环状或5裂,长0.5-1毫米,无鳞片或被鳞片,无缘毛或稀有微毛;花冠宽漏斗状,略呈两侧对称,长1.8-3厘米,初始淡紫色,开放后白色、淡红或深红紫色,内面有绿褐色或紫色斑点,外面无鳞片或稀有鳞片;雄蕊不等长,长雄蕊伸出花冠外,花丝基部密被短柔毛;子房5室,密被鳞片,稀顶部有微柔毛,花柱细长,伸出花冠外,洁净。蒴果长圆形,长0.8-1厘米。
分布(Distribution):产四川、云南。生于海拔2 000-3400米灌丛或林缘。
用途(Use):
引自中国植物志英文版FOC Vol. 14 Page 279
  Rhododendron rigidum Franchet, Bull. Soc. Bot. France. 33: 233. 1886.
基毛杜鹃 ji mao du juan  | Apiaceae  | Rhododendron
Rhododendron caeruleum H. Léveillé; R. eriandrum H. Léveillé ex Hutchinson; R. hesperium I. B. Balfour & Forrest; R. racemosum Franchet var. rigidum (Franchet) Rehnelt; R. rarosquameum I. B. Balfour; R. sycnanthum I. B. Balfour & W. W. Smith.
Shrubs, rarely small trees, 1–2(–10) m tall; old branches glabrous; young shoots with scales absent or sparse, sometimes also pubescent. Petiole 2–12 mm, scales sparse or absent, otherwise glabrous or rarely pubescent; leaf blade elliptic, oblong elliptic, oblong-lanceolate or oblanceolate, 2.5–6.8 × 1–3.2 cm; base narrow or rounded; apex obtuse, acute, or rounded, apiculate; abaxial surface gray green, scales (2–)4–8 × their own diameter apart, or contiguous, unequal; adaxial surface brownish green, sparsely scaly or absent, sometimes also pubescent along midrib. Inflorescence terminal or subterminal, shortly racemose, 2–6-flowered; rachis 2–4 mm. Pedicel 0.5–2 cm, not scaly or sparsely scaly and pubescent; calyx rimlike or 5-lobed, 0.5–1 mm, scales present or absent; corolla broadly funnelform-campanulate, pale purplish to white or deep reddish purple, with greenish brown or purple spots within, 1.8–3 cm, outer surface not scaly, rarely scaly; stamens unequal, long ones longer than corolla; filaments densely pubescent at base; ovary 5-locular, densely scaly, rarely pubescent on top; style longer than corolla, glabrous. Capsule cylindric, 8–10 mm.
Forest margins, thickets; 2000–3400 m. Sichuan, Yunnan.
Rhododendron bodinieri Franchet (J. Bot. (Morot) 12: 257. 1898), described from S Yunnan, is intermediate between, and may be a hybrid between, R. rigidum and R. siderophyllum (see Cullen, Notes Roy. Bot. Gard. Edinburgh 39: 69. 1980).
基毛杜鹃Rhododendron rigidum

基毛杜鹃Rhododendron rigidum

基毛杜鹃Rhododendron rigidum(责任编辑:徐晔春)

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