Flora of China
  FOC Vol.5 (2003)              | Family List  Podostemaceae  PDF     | Link Font:+ Big | - Small
   Podostemaceae  Richard ex C. Agardh
川苔草科   chuan tai cao ke
Authors:Qiu Huaxing (邱华兴 Chiu Hua-hsing, Kiu Hua-xing) ; C. Thomas Philbrick

  • Qiu Huaxing -- Department of Taxonomy, South China Institute of Botany, Chinese Academy of Sciences, Wushan, Guangzhou, Guangdong 510650, People’s Republic of China.
  • C. Thomas Philbrick -- George Safford Torrey Herbarium, Biological Sciences Group, University of Connecticut, Life Sciences U-43, Storrs, Connecticut 06269-3042, U.S.A.


    Herbs, annual or perennial, aquatic. Roots usually flattened, thalloid or filiform. Leaves distichous, scattered, or imbricate, base often sheathed, margin entire or dissected. Flowers bisexual, solitary, actinomorphic or zygomorphic, enclosed or not by a spathella or spathella lacking. Tepals 2-5, free or ± connate. Stamens 1-4, hypogynous; filaments free or partially connate; anthers 2-4-loculed, longitudinally or irregularly dehiscent. Ovary superior, 2- or 3-loculed; ovules numerous, placenta central. Styles 2 or 3. Fruit a septicidal capsule. Seeds numerous, minute, without endosperm.

    About 40 genera and 200 species: widespread in tropical regions, a few species in temperate regions: three genera and four species (two endemic) in China.

    The plants live attached to submerged rocks or wood in rushing water in rapids or cataracts of streams and rivers. They are easily overlooked, and more field work is needed in China.

    Wu Te-lin. 1988. Podostemaceae. In: Kiu Hua-shing & Ling Yeou-ruenn, eds., Fl. Reipubl. Popularis Sin. 24: 1–5.

    1Flowers axillary; spathella absent; tepals 3; stamens 2 or 3.1  Dalzellia    川藻属
    +Flowers terminal; spathella present; tepals 2; stamens 1 or 2.(2)
    2(1)Leaves of fertile stems scale-like, distichous; capsule ribbed.2  Hydrobryum    水石衣属
    +Leaves of fertile stems digitate, 3-9-segmented, scattered, imbricate; capsule smooth.3  Cladopus    川苔草属
       Lower Taxon
  • Cladopus  H. Möller  川苔草属
  • Dalzellia  Wight  川藻属
  • Hydrobryum  Endlicher  水石衣属