foc
《中国植物志》英文修订版
Flora of China
  FOC Vol.8 (2001)              | Family List  Brassicaceae  PDF Barbarea  PDF   |  eFloras.org Link Font:+ Big | - Small
   46. Barbarea  R. Brown
山芥属   shan jie shu
  

  

Herbs biennial or perennial, with rhizomes or woody caudex, rarely annuals. Trichomes simple or absent. Stems erect, sometimes prostrate, angular. Basal leaves rosulate or not, lyrate-pinnatifid or pinnatisect, rarely undivided. Cauline leaves petiolate or sessile, auriculate or amplexicaul, entire, dentate, pinnatifid, or pinnatisect. Racemes many flowered, often ebracteate; rachis striate. Fruitng pedicels slender or thickened, erect or divaricate. Sepals oblong or linear, erect or spreading, base of lateral pair saccate. Petals yellow, rarely creamy white; blade spatulate or oblanceolate, apex obtuse or rounded; claw obscurely differentiated. Stamens 6, tetradynamous; filaments not dilated at base; anthers oblong, obtuse at apex. Nectar glands 4, median pair toothlike; lateral pair annular. Ovules 10-40 per ovary. Fruit dehiscent siliques, linear or rarely elliptic-linear, terete, 4-angled, or latiseptate, sessile or shortly stipitate; valves with a prominent midvein and distinct marginal veins, mostly glabrous, smooth or torulose; replum rounded; septum complete; style obsolete or to 5 mm; stigma capitate, entire or slightly 2-lobed. Seeds uniseriate or subbiseriate, wingless, margined, or winged, oblong, ovoid, or orbicular, plump or slightly flattened; seed coat reticulate, rarely tuberculate, not mucilaginous when wetted; cotyledons accumbent.

About 22 species: mainly in SW Asia, Australia, Europe, and North America; five species (two endemic, one introduced) in China.

  
1Terminal lobe of basal and lowermost cauline leaves nearly as large as adjacent lateral lobes; uppermost cauline leaves with (4-)6-10(-12) lateral lobes; plants perennial1  B. taiwaniana    台湾山芥
+Terminal lobe of basal and lowermost cauline leaves much larger than adjacent lateral lobes; uppermost cauline leaves unlobed or with 1-4 lateral lobes; herbs annual or biennial, rarely perennial.(2)
   
2(1)Fruit strongly compressed, 2-2.5 wide; valve apex retuse; seeds 1.6-2 × 1.4-1.7 mm, winged all around2  B. hongii    洪氏山芥
+Fruit terete, quadrangular, or slightly compressed, 1-1.8(-2) mm wide; valve apex obtuse or subacute; seeds smaller, wingless.(3)
   
3(2)Uppermost cauline leaves pinnatisect into linear or linear-oblong lateral lobes; fruit 1.5-1.8(-2) mm wide4  B. intermedia    羽裂山芥
+Uppermost cauline leaves undivided, dentate, or lyrate-pinnatifid into oblong or ovate lateral lobes; fruit 1-1.5 mm wide.(4)
   
4(3)Style in fruit stout, 0.5-1(-1.2) mm; uppermost cauline leaves usually lyrate-pinnatifid3  B. orthoceras    山芥
+Style in fruit slender, 1.5-3 mm; uppermost cauline leaves undivided5  B. vulgaris    欧洲山芥
   
   Lower Taxon
  • Barbarea intermedia  Boreau  羽裂山芥
  • Barbarea orthoceras  Ledebour  山芥
  • Barbarea taiwaniana  Ohwi  台湾山芥
  • Barbarea vulgaris  R. Brown  欧洲山芥
  • Barbarea hongii  Al-Shehbaz & G. Yang  洪氏山芥