foc
《中国植物志》英文修订版
Flora of China
  FOC Vol.8 (2001)              | Family List  Brassicaceae  PDF Lignariella  PDF   |  eFloras.org Link Font:+ Big | - Small
   28. Lignariella  Baehni
弯梗芥属   wan geng jie shu
  

  

Herbs biennial or short-lived perennial. Trichomes simple, clavate papillae. Stems ascending or decumbent or prostrate. Basal leaves not seen. Cauline leaves petiolate, palmately 3(-5)-lobed or 3(-5)-partite to base, sometimes 3(-5)-toothed near apex, rarely repand or entire, glabrous, usually palmately veined. Racemes several flowered, bracteate throughout. Fruiting pedicels divaricate and often recurved or reflexed, rarely straight, papillate adaxially. Sepals oblong, ascending-spreading, glabrous, base subsaccate, rarely nonsaccate. Petals purple or blue, rarely pink, spreading, often much longer than sepals; blade orbicular or obovate, rounded; claw very short. Stamens 6, spreading, equal in length; filaments distinctly dilated at base; anthers narrowly oblong or ovate, apex obtuse. Nectar glands confluent, subtending bases of all filaments. Ovules 2-6(-12) per ovary. Fruit dehiscent siliques or silicles, linear, oblong, ovoid, or ellipsoid, terete or slightly latiseptate, subsessile or long stipitate; valves veinless, glabrous or sparsely papillate, smooth or slightly torulose; replum slightly flattened; septum absent; style to 4 mm; stigma capitate, entire. Seeds uniseriate, rarely 1, wingless, oblong, plump; seed coat minutely colliculate, not mucilaginous when wetted; cotyledons incumbent.

Four species: Bhutan, China, Nepal, Sikkim; three species in China.

  
1Petals orbicular or orbicular-obovate, (5.5-)6-8(-9) mm; anthers 0.6-1.2 mm3  L. hobsonii    弯梗芥
+Petals narrowly to broadly obovate, 1.5-4(-4.5) mm; anthers 0.25-0.4 mm.(2)
   
2(1)Fruit oblong-ovoid to broadly oblong, 2-4-seeded; fruiting pedicels often recurved; petals purple, (2.7-)3-4(-4.5) × 1.7-2.5 mm2  L. serpens    蛇形弯梗芥
+Fruit narrowly oblong or linear, 6-12 seeded; fruiting pedicels usaully straight; petals white or rarely pink, 1.5-2 × 0.5-1 mm1  L. ohbana    线果弯梗芥
   
   Lower Taxon
  • Lignariella hobsonii  (H. Pearson) Baehni  弯梗芥
  • Lignariella ohbana  Al-Shehbaz & Arai  线果弯梗芥
  • Lignariella serpens  (W. W. Smith) Al-Shehbaz et al.  蛇形弯梗芥