Authors: Rinchen Dorji and Michael B. Thomas
Citation: How to cite: Rinchen Dorji and Michael B. Thomas. 2017-2021. Updated Pteridophytes (Ferns and Lycophytes) of Bhutan Checklist. National Herbarium, National Biodiversity Centre, Ministry of Agriculture. Serbithang, Thimphu, Bhutan. http://www.bhutanbiodiversity.net/, accessed yyyy-mm-dd.
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Locality: Bhutan (27.332740, 90.439450)
Abstract: This checklist is being updated to follow current taxonomic nomenclature, however, is not yet exhaustive and a work in progress (last update 4/7/2021). Currently, a total of 527 species (541 taxa) of ferns in 106 genera, and 29 families comprise this checklist. More pteridophyte species are likely to be encountered and specimens collected, possibly new species, as further detailed studies are carried out. The list was initially based on literature review and was later authenticated through examination of more than 3450 herbarium specimens and additional unprocessed field collections. Currently, more than 527 species have been collected, identified, georeferenced, and preserved in the Bhutan National Herbarium (THIM). This checklist includes links to 1197 digitized specimens held at THIM. Digital photographs are presented when available and are being continuously added.

The Bhutan Himalaya forms a substantial part of the Eastern Himalaya with a huge elevation gradient from the low southern foothills with sub-tropical forests to the high northern Himalayas with alpine meadows. Its high variations of climatic and geographic factors contribute to high biodiversity. Over 5600 species of vascular plants occur in Bhutan, of which 423 are orchids including 54 species of new records (Gurung 2006) and some 46 species of Rhododendron (Flora of Bhutan 1991). The family of orchids, Orchidaceae, is the largest, followed by Poaceae, the grass family. Unlike neighboring states of India and Nepal, pteridophytes of Bhutan have remained largely unstudied.

References:
Fraser-Jenkins, C.R., Matsumoto, S. & Wangdi, T., in Fraser-Jenkins, C.R. (ed.). 2009. Pteridophytes of Bhutan - A list of families, genera and species: i-x, 1-125. National Biodiversity Centre, Ministry of Agriculture, Serbithang, Thimphu, Bhutan.

POWO. 2019. Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://www.plantsoftheworldonline.org/ Last Retrieved 31-12-2020.

Notes: Project supported by the United States Fulbright Scholar Program, Washington, D.C. (2017). The Fulbright Program is the flagship international educational exchange program sponsored by the U.S. government.

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Families: 30
Genera: 106
Species: 527 (species rank)
Total Taxa: 541 (including subsp. and var.)

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This species is accepted, and its native range is Africa, Arabian Peninsula, Iran to Myanmar.
This species is accepted, and its native range is Tropical & Subtropical Asia to SW. Pacific.; C.R. Fraser-Jenkins... FN 15 [NBC] , C.R.Fraser-Jenkins 15 [NBC] , C.R. Fraser-Jenkins... FN 15 [NBC]
This species is accepted, and its native range is Himalaya to Japan (Kyushu) and Philippines.; T. Wangdi... CRFJ 31757 [NBC] , CRFJ 31757 [NBC] , T. Wangdi... CRFJ 31757 [NBC]
This species is accepted, and its native range is W. & Central China
This species is accepted, and its native range is Africa, Arabian Peninsula Indian Subcontinent to China (Yunnan).
This species is accepted, and its native range is Nepal to Taiwan and Myanmar.; A.J.C. Grierson... 1255 [NBC]
This species is not accepted, and its native range is Tropical & Subtropical Asia.
This species is not accepted, and its native range is Tropical & Subtropical Asia.
This species is not accepted, and its native range is Siberia to Japan and N. Indo-China.
This is an unplaced name.
This species is not accepted, and its native range is Indian Subcontinent to S. China and Indo-China, Philippines.
Athyrium sp. - Gasha Daway
Recorded from: Mongar, Uses: food, Parts used: Young fronds, source: Matsushima et al. (2012); Matsushima et al. (2008)
Recorded from: Thimphu, Trashigang, and Bumthang, Uses: food, medicine (increase longevity), Parts used: Fronds, source: Matsushima et al. (2008); Mohan Chhetri 24 [NBC] , T. Wangdi... 179 [NBC]
Recorded from: Trashigang, Uses: food, Parts used: Young fronds
Diplazium sp. - Tonkey Dawey
Recorded from: Thimphu, Trashigang, Mongar, Wangdue Phodrang, Trongsa, Punakha, Tsirang, Uses: food, medicine (bodyache), Parts used: Young fronds, source: Matsushima et al. (2012); Matsushima et al. (2008)
Recorded from: Thimphu, Tsirang, Mongar, Trongsa, Punakha, Uses: food, Parts used: Young fronds, source: Matsushima et al. (2012); Matsushima et al. (2008); C.R. Fraser-Jenkins... CRFJ 31745 [NBC] , C.R. Fraser-Jenkins... CRFJ 31777 [NBC] , T. Wangdi... 403 [NBC] , T. Wangdi... 581 [NBC] , more...
Recorded from: Trashigang, Uses: food, Parts used: Young fronds, source: Matsushima et al. (2008)
This species is accepted, and its native range is Himalaya to Taiwan.
CRFJ CRFJ31452 [NBC] , CRFJ CRFJ 31523 [NBC] , CRFJ CRFJ31452 [NBC] , CRFJ CRFJ 31523 [NBC] , more...
Recorded from: Trashigang, Zhemgang, Uses: food, Parts used: Young fronds, source: Matsushima et al. (2008)
Pteris excelsa Gaud. - Nimin Daway
Recorded from: Mongar, Uses: food, Parts used: Young fronds, source: Matsushima et al. (2012); Matsushima et al. (2008); C.R. Fraser-Jenkins... CRFJ 31722 [NBC]
Recorded from: Wangdue Phodrang, Uses: food, Parts used: Young fronds, source: Matsushima (2008); T. Wangdi... 479 [NBC] , T. Wangdi... 169 [NBC] , T. Wangdi... 169 [NBC]