foc
《中国植物志》英文修订版
Flora of China
  FOC Vol.8 (2001)              | Family List  Brassicaceae  PDF Neotorularia  PDF   |  eFloras.org Link Font:+ Big | - Small
   94. Neotorularia  Hedge & J. Léonard
念珠芥属   nian zhu jie shu
  

Torularia (Cosson) O. E. Schulz in Engler, Pflanzenr. 86(IV. 105): 213. 1924, not Bonnemaison (1828); based on Sisymbrium Linnaeus sect. Torularia Cosson, Comp. Fl. Atlant. 2: 136. 1887.

  

Herbs annual, biennial, or perennial with a woody caudex. Trichomes stalked or subsessile, 1- or 2-forked sometimes also simple. Stems erect or prostrate, usually several from base. Basal leaves petiolate or sessile, rosulate or not, entire, dentate, or pinnatisect. Cauline leaves often similar to basal ones, rarely absent. Racemes few to several flowered, ebracteate or rarely bracteate. Fruiting pedicels erect, ascending, or divaricate. Sepals ovate or oblong, erect or spreading, rarely reflexed, glabrous or pubescent, base of lateral pair not saccate. Petals white or pink, sometimes yellowish, longer or rarely shorter than sepals; blade obovate, spatulate, or oblanceolate, apex obtuse or retuse; claw distinct or not. Stamens 6, tetradynamous; filaments rarely dilated at base; anthers ovate or narrowly oblong, apex apiculate or obtuse. Median glands absent; lateral ones semilunar or 1 on each side of lateral stamen. Ovules (8-)16-36(-44) per ovary. Fruit dehiscent siliques, linear or rarely linear-oblong, terete or 4-angled, sessile; valves with branched trichomes sometimes mixed with simple ones, rarely glabrescent, torulose; replum rounded; septum complete; style obsolete or to 1 mm; stigma capitate, entire or 2-lobed. Seeds uniseriate, wingless, oblong or ovate, plump; seed coat reticulate, not mucilaginous when wetted; cotyledons incumbent.

About 14 species: C and SW Asia, one species extending into North America and another into N Africa and Europe; six species (one endemic) in China.

  
1Perennials, at least lowermost portion of raceme bracteate.(2)
+Annuals or biennials, if perennial then style more than 1 mm; racemes ebracteate.(3)
   
2(1)Fruit (9-)12-25(-32) × 0.5-0.9(-1) mm, uniform in width; petals 3-5(-8) mm; seeds uniseriate; racemes bracteate along lowermost portion, rarely throughout1  N. humilis    蚓果芥
+Fruit 3-10(-15) × 1-1.3 mm, widest near or at base; petals 1-2.5(-3) mm; seeds often subbiseriate at basal portion of fruit; racemes bracteate throughout or rarely only along proximal half2  N. brachycarpa    短果念珠芥
   
3(1)Racemes rachis flexuous; fruit straight; Nei Mongol6  N. qingshuiheense    青水河念珠芥
+Racemes rachis straight; fruit twisted or curved apically; elsewhere.(4)
   
4(3)Stem leafless; petals less than 2 mm; basal leaves including petiole less than 1 cm5  N. brevipes    短梗念珠芥
+Stem leafy; petals more than 2 mm; basal leaves including petiole more than 1 cm.(5)
   
5(4)Fruiting pedicels narrower than fruit, (3-)4-6(-8) mm; petals 5-7 mm3  N. korolkowii    甘新念珠芥
+Fruiting pedicels as thick as fruit, 0.3-1(-2) mm; petals (2-)2.5-3.5(-4) mm4  N. torulosa    念珠芥
   
   Lower Taxon
  • Neotorularia humilis  (C. A. Meyer) Hedge & J. Léonard  蚓果芥
  • Neotorularia brachycarpa  (Vassilczenko) Hedge & J. Léonard  短果念珠芥
  • Neotorularia korolkowii  (Regel & Schmalhausen) Hedge & J. Léonard  甘新念珠芥
  • Neotorularia torulosa  (Desfontaines) Hedge & J. Léonard  念珠芥
  • Neotorularia brevipes  (Karelin & Kirilov) Hedge & J. Léonard  短梗念珠芥
  • Neotorularia qingshuiheense  (Ma & Zong Y. Zhu) Al-Shehbaz et al.  青水河念珠芥