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Gelidium amansii
Gelidium amansii
Scientific classification e
(unranked): Archaeplastida
Division: Rhodophyta
Class: Florideophyceae
Order: Gelidiales
Family: Gelidiaceae
Genus: Gelidium
J.V. Lamouroux, 1813

Gelidium is a genus of thalloid red algae comprising 124 species.Its members are known by a number of common names.[note 1] Specimens can reach around 2–40 cm (0.79–16 in) in size. Branching is irregular, or occurs in rows on either side of the main stem. Gelidium produces tetraspores. Many of the algae in this genus are used to make agar. Chaetangium is a synonym.[1]



  1. ^ Recorded common names are tengusa, makusa, genso, niu mau tsai, japansche scheleiachtige mos, steen-or klipbloem, hay tsay, olus marinus, sajur laut, tschintschau, tschoo-hoae, onikusa, hirakusa, obusa, rødalge-slaegt, gelídeos, punalevä-suku, tokoroten, kanten, tokoro-tengusa, kinukusa, isingglass, hai-ten-gusa, tocoroten, tengusa-agar, limu lo-loa, hai-tengusa, onigusa, oyakusa, kanten weed, goumaocai, hime tengusa, shihua and tanmae.


  • Guiry, M.D.; Guiry, G.M. (2008). "Gelidium". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Retrieved 2009-04-18. 
  1. ^ Tronchin, E. M.; Freshwater, D. W.; Bolton, J. J.; Anderson, R. J. (2002). "A Reassessment and Reclassification of Species in the Genera Onikusa Akatsuka and Suhria J. Agardh ex Endlicher (Gelidiales, Rhodophyta) Based on Molecular and Morphological Data". Botanica Marina. 45 (6): 548–558. doi:10.1515/BOT.2002.058. 
  • Toefy, R., Gibbons, M.J. & McMillan, I.K. 2005. The foraminifera associated with the alga Gelidium pristoides, South Africa. African Invertebrates 46: 1-26.[1]

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