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Genus Tuyamaella S. Hatt. (Lejeuneaceae) in India


Tuyamaella S. Hatt, a small genus represented by six species and two varieties, is distributed in Asiatic and oceanic region (Zhu & So, 2000a, 2001). Of these, one species and two varieties are endemic to their respective countries, viz. T. borneensis Tixier (Indonesia), T. molischii (Schiffn.) S. Hatt. var. brevistipa P.C. Wu & P.J. Lin (China), T. molischii (Schiffn.) S.Hatt. var. taiwanensis R.L. Zhu & M.L. So (Taiwan), T. hattorii Tixier is restricted to Vietnam and Laos, T. jackii (Steph.) Tixier is restricted to Vietnam and Kampuchea. The remaining three species show an extended range of distribution, viz. T. angulistipa (Steph.) R.M. Schust. & Kachroo (China, Indonesia, Malaysia, Vietnam, Kampuchea, Papua New Guinea), T. molischii (Schiffn.) S. Hatt. var. molischii (China, Japan, Malaysia, Vietnam) and T. serratistipa S. Hatt. (Indonesia, Papua New Guinea, Philippines, Malaysia, New Caledonia) (Tixier, 1973; Zhu & So, 1998, 2000a, b, 2001). The earlier record of T. angulistipa (= Pycnolejeunea angulistipa Steph.) from India by Chopra (1943) based on Stephani's (1914) report from India Orientalis (Perak) appears to be erroneous. Perhaps for this reason the genus does not find any mention in the recent review on Indian Lejeuneaceae in India (Asthana, 2007).

During the course of studies on the epiphyllous liverworts of Eastern Himalaya, the authors came across an interesting collection belonging to family Lejeuneaceae from West Siang district of Arunachal Pradesh which differed from all the known taxa of the family from India. Subsequent morpho-taxonomic studies on the plants followed by review of relevant literature (Tixier, 1973; Zhu & So, 1998, 2000a, b, 2001) revealed them to be Tuyamaella serratistipa S. Hatt., a species so far known from Indonesia, Papua New Guinea, Philippines, Malaysia and New Caledonia (Zhu & So, 1998, 2000b).



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  1. ASTHANA, G.. 2007. Current status of family Lejeuneaceae in India. In: Nath, V. and A.K. Asthana (eds.), Current Trends in Bryology. Bishen Singh Mahendra Pal Singh, Dehra Dun, India:101-130.
  2. CHOPRA, R.S. 1943. A Census of Indian Hepatics. J. Indian Bot. Soc. 22:237- 259.
  3. STEPHANI, F. 1914. Species Hepaticarum V. Geneve et Bale.
  4. TIXIER P. 1973. Le genre Tuyamaella Hatt. (Lejeuneacees) Monographic Rev. Bryol Lichtnol. 39:221-244.
  5. ZHU R.L. AND M.L. So. 1998. Tuyamaella serratistipa S. Hatt. new to the Philippines, with a key to the genus Tuyamaella (Hepaticae, Lejeuneaceae). J. Bryol 20:455-460.
  6. ZHU R.L. AND M.L. So. 2000a. The genus Tuyamaella (Hepaticae, Lejeuneaceae) in China. Nova Hedwigia 70 (1-2):185-192.
  7. ZHU R L AND M.L. So. 2000b. Notes on the taxonomy and distribution of Lejeunea neelgherriana and Tuyamaella serratistipa (Hepaticae, Lejeuneaceae). Ann. Bot. Fenn. 37:149-153.
  8. ZHU R L AND M.L. So. 2001. Epiphyllous liverworts of China. Beih. Nova Hedwigia 121:1-418.

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