foc
《中国植物志》英文修订版
Flora of China
  FOC Vol.8 (2001)              | Family List  Brassicaceae  PDF Desideria  PDF   |  eFloras.org Link Font:+ Big | - Small
   57. Desideria  Pampanini
扇叶芥属   shan ye jie shu
  

Ermaniopsis H. Hara; Oreoblastus Suslova.

  

Herbs perennial, with a slender, rhizomelike caudex. Trichomes simple or mixed with short-stalked, forked ones. Stems simple, leafy or leafless, sometimes absent. Basal leaves petiolate, rosulate, simple, 3-9(-11)-toothed, rarely subentire, often palmately veined. Cauline leaves absent or similar to basal ones, entire or toothed, subsessile or petiolate. Racemes 3-30-flowered, bracteate or ebracteate, sometimes flowers solitary on pedicels originating from basal rosette. Sepals ovate or oblong, free or united, caducous or persistent, erect, base of lateral pair not saccate. Petals purple, purple-green, or rarely white, sometimes yellowish at base of blade; blade obovate or spatulate, apex obtuse or subemarginate; claw subequaling or longer than sepals. Stamens 6, tetradynamous; filaments wingless or rarely winged and toothed, dilated at base; anthers ovate or oblong, obtuse at apex. Nectar glands 2 and lateral, or confluent and subtending bases of all stamens; median glands present or absent. Ovules 10-70 per ovary. Fruit dehiscent siliques, linear or lanceolate, latiseptate, rectangular in cross section, sessile; valves papery, with a prominent midvein and distinct marginal veins, not torulose, apex persistently united with replum; replum rounded; septum complete, perforated, or reduced to a rim, translucent, or absent; style obsolete; stigma capitate, 2-lobed or rarely subentire. Seeds uniseriate or biseriate, wingless, oblong or ovate, often flattened; seed coat minutely reticulate, not mucilaginous when wetted; cotyledons accumbent.

Twelve species: Himalayas and adjacent C Asia; eight species (two endemic) in China.

  
1Sepals connate, persistent till or after fruit dehiscence; septum absent or reduced to a rim8  D. mirabilis    扇叶芥
+Sepals free, caducous or rarely persistent till about fruit maturity; septum complete or rarely perforated apically.(2)
   
2(1)Pedicels solitary from a basal rosette.(3)
+Pedicels on a distinct rachis of (3-)6-30-flowered racemes.(5)
   
3(2)Fruit ovate or broadly lanceolate, 6-9 mm wide, prominently reticulate veined7  D. baiogoinensis    藏北扇叶芥
+Fruit linear to linear lanceolate, 2-5 mm wide, obscurely veined.(4)
   
4(3)Leaf trichomes forked and simple; replum retrorsely ciliate; valves glabrous; sepals 3-4 mm; petals 6-7 mm6  D. pumila    矮扇叶芥
+Leaf trichomes exclusively simple; replum spreading ciliate; valves pubescent; sepals 6-7 mm; petals 11-14 mm5  D. prolifera    丛生扇叶芥
   
5(2)Racemes ebracteate4  D. flabellata    长毛扇叶芥
+Racemes bracteate throughout.(6)
   
6(5)Stem and pedicel trichomes forked2  D. stewartii    少花扇叶芥
+Stem and pedicel trichomes exclusively simple or absent.(7)
   
7(6)Fruit lanceolate to linear-lanceolate, (3-)4-6 mm wide; petals (6-)6.5-8 × 3-4 mm; seeds biseriate, (1.5-)1.8-2(-2.3) × 1-1.4 mm1  D. himalayensis    须弥扇叶芥
+Fruit linear, (0.8-)1-1.7(-2) mm wide; petals 4-5(-5.5) × 1.5-2.5 mm; seeds uniseriate, 0.8-1.1 × 0.5-0.8 mm3  D. linearis    线果扇叶芥
   
   Lower Taxon
  • Desideria himalayensis  (Cambessèdes) Al-Shehbaz  须弥扇叶芥
  • Desideria stewartii  (T. Anderson) Al-Shehbaz  少花扇叶芥
  • Desideria linearis  (N. Busch) Al-Shehbaz  线果扇叶芥
  • Desideria flabellata  (Regel) Al-Shehbaz  长毛扇叶芥
  • Desideria prolifera  (Maximowicz) Al-Shehbaz  丛生扇叶芥
  • Desideria pumila  (Kurz) Al-Shehbaz  矮扇叶芥
  • Desideria baiogoinensis  (K. C. Kuan & Z. X. An) Al-Shehbaz  藏北扇叶芥
  • Desideria mirabilis  Pampanini  扇叶芥
  • Desideria mieheorum  Al-Shehbaz