Drynaria roosii

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Drynaria roosii
Scientific classification edit
Kingdom: Plantae
Class: Polypodiopsida
Order: Polypodiales
(unranked): Eupolypods I
Family: Polypodiaceae
Genus: Drynaria
D. roosii
Binomial name
Drynaria roosii
  • Drynaria fortunei (Kunze) J. Smith
  • Polypodium fortunei Kunze ex Mett.

Drynaria roosii, commonly known as gu-sui-bu, is a species of basket fern of the family Polypodiaceae. The plant is native to Eastern Asia, including eastern China.

It is used in traditional Chinese medicine. This species is also more frequently cited by Asian studies by its synonym, Drynaria fortunei.[1]


Drynaria roosii is an epiphytic (growing on trees) or epipetric (growing on rocks) plant. Like other species of Drynaria, they possess two frond types – a fertile foliage frond and a sterile nest frond.[2][3]

Sterile nest fronds are rounded shallowly-lobed reddish-brown fronds overlapping each other. They bear no sori and form a 'basket' characteristic of the genus. The fertile fronds are larger and deeply lobed. They bear 1 to 3 sori arranged on both sides of the central rib.[2][3][4]

Medicinal uses[edit]

Preparations from the rhizomes of Drynaria roosii is used in traditional herbal medicine for aiding in the healing of bone fractures and for treating rheumatoid arthritis.[2][5]

Pharmacological study[edit]

Modern studies of Drynaria roosii have identified in vitro effects on isolated bone cells.[6]

Flavan-3-ols and propelargonidins can be isolated from the rhizomes.[7]


Vernacular names[edit]

Drynaria roosii is known as Gu-Sui-Bu (骨碎補) in Chinese (English: "mender of shattered bones").[8] A reference to its use in traditional Chinese medicine for healing broken bones.[5]

Other common names in Chinese include Mao-chiang ('hairy ginger'), shih-pan chiang ('stony plate ginger'), wang-chiang, shih-chiang, hou-chiang ('monkey ginger'), p'a shan hu (mountain-climbing tiger), feng chiang, p-yen chiang, hou-sheng chiang, and hou chueh.[2]

It is also known as Gol-Se-Bo in Korean and Cốt toái bổ in Vietnamese.[5][9]


Drynaria roosii is classified under the genus Drynaria (basket ferns) of the family Polypodiaceae.[10][11] It is more frequently cited by Asian authors by its synonym Drynaria fortunei.[1]

See also[edit]


  1. ^ a b Stuart Lindsay; David J. Middleton; Thaweesakdi Boonkerd; Somran Suddee (2009). "Towards a stable nomenclature for Thai ferns" (PDF). Thai Forest Bulletin (Botany) (37): 64&ndash, 106. Archived from the original (PDF) on March 16, 2012. Retrieved July 31, 2011.
  2. ^ a b c d A barefoot doctor's manual: a concise edition of the classic work of eastern herbal medicine. Running Press. 2002. p. 367. ISBN 978-0-7624-1250-1.
  3. ^ a b Robert Lee Riffle (1998). The tropical look: an encyclopedia of dramatic landscape plants. Timber Press. p. 152. ISBN 978-0-88192-422-0.
  4. ^ William Jackson Hooker (1864). Species filicum. William Pamplin. p. 95.
  5. ^ a b c Eun-Kyung Jung (2007). "Antimicrobial Activity of Extract and Fractions from Drynaria fortunei Against Oral Bacteria" (PDF). Journal of Bacteriology and Virology. 37 (2): 61&ndash, 68. doi:10.4167/jbv.2007.37.2.61. Retrieved July 28, 2011.
  6. ^ Jui-Sheng Sun; Chun-Yu Lin; Guo-Chung Dong; Shiow-Yunn Sheu; Feng-Huei Lin; Li-Ting Chen; Yng-Jiin Wang (2002). "The effect of Gu-Sui-Bu (Drynaria fortunei J.Sm) on bone cell activities" (PDF). Biomaterials. Elsevier. 23 (2002): 3377&ndash, 3385. doi:10.1016/s0142-9612(02)00038-8. Retrieved July 28, 2011.
  7. ^ Proliferative effects of flavan-3-ols and propelargonidins from rhizomes of Drynaria fortunei on MCF-7 and osteoblastic cells. Eun Ju Chang, Won Jung Lee, Sung Hee Cho and Sang Won Choi, Archives of Pharmacal Research, August 2003, Volume 26, Issue 8, pages 620-630, doi:10.1007/BF02976711
  8. ^ Christopher Hobbs; Kathi Keville (2007). Women's Herbs, Women's Health. Book Publishing Company. p. 287. ISBN 978-1-57067-152-4.
  9. ^ Nguyễn Đức Quang (December 1, 2009). "Cốt toái bổ - Bổ thận chắc răng" (in Vietnamese). Phuongkhuongmai.gov.vn. Archived from the original on March 28, 2012. Retrieved July 28, 2011.
  10. ^ "Drynaria (Bory) J. Sm". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved July 27, 2011.
  11. ^ "Drynaria". The Plant List v1.0. 2010. Retrieved July 27, 2011.