细裂枫 xi lie feng

Acer stenolobum Rehder, J. Arnold Arbor. 3: 216. 1922; A. stenolobum var. megalophyllum W. P. Fang & Y. T. Wu; A. stenolobum var. monochladea S. C. Cui & J. X. Yu; A. stenolobum var. pubescens W. Z. Di.

Leaf blade 3-6(-8) × 2.5-7(-12) cm, sinuses to 5/6 width of blade; lobes oblong-lanceolate, margin entire or rarely with few serrations apically, apex obtuse. Fruit greenish; nutlets slightly convex, ca. 6 mm in diam.; wing including nutlet 2-2.5 cm × 8-10 mm, wings spreading at 90° or nearly horizontally. Fl. Apr, fr. Sep.

● Forests; 1000-1500 m. NE Gansu, SW Nei Mongol, SE Ningxia, N Shaanxi.