foc
《中国植物志》英文修订版
Flora of China
  FOC Vol.2-3 (2013)              | Family List  Cyatheaceae  PDF     |  eFloras.org Link Font:+ Big | - Small
   19. Cyatheaceae  
桫椤科   suo luo ke
  
Authors:Authors: Zhang Xianchun & Harufumi Nishida

  

Plants terrestrial, large to very large, less often medium-sized, with short to usually long, erect, slender to robust, apically scaly stem. Stems with dictyosteles, apices (and usually stipe bases) covered with large scales, sometimes also with small scales or hairs. Fronds usually large (up to 5 m); stipe with obvious, usually discontinuous pneumathodes in two lines; lamina 1-3-pinnate (rarely simple); veins simple to forked, free, rarely anastomosing. Sori superficial (abaxial) or terminal on veins and marginal or submarginal, orbicular, exindusiate, or indusia saucerlike, cuplike, or globose and completely surrounding sporangia, or bivalvate; sporangia maturing gradually, with oblique annuli; receptacles raised; paraphyses usually present; spores tetrahedral, trilete, variously ornamented; gametophytes green, cordate. x = 69.

About five genera and more than 600 species: pantropical; two genera and 14 species (one endemic) in China.

Zhang Xianchun. 2004. Cyatheaceae. In: Zhang Xianchun, ed., Fl. Reipubl. Popularis Sin. 6(3): 249-274.

  
1Stipe stramineous or purple, not black; cells of scale all essentially similar and edge often toothed or even ciliate.1  Sphaeropteris    白桫椤属
+Stipe dark or black; cells of scale narrow near center, surrounded by a broad margin of differently shaped cells, edge toothed or ciliate, with a prominent dark terminal seta or spine.2  Alsophila    桫椤属
   
   Lower Taxon
  • Alsophila  R. Brown  桫椤属
  • Sphaeropteris  Bernhardi  白桫椤属