Florideophyceae | 
Halymeniales | 
Halymeniaceae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Sessile; depth range 30 - 51 m (Ref. 102158).  Tropical			
			
			
				
			
			
			
				Indo-West Pacific.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm			
			
			
							
				
				
					
						Thalli large and bushy, red-orange or purple in colour, soft cartilaginous and slimy when fresh, attached to rocky substrates by a discoid holdfast. Stipe short, supporting 2 to 4 main axes which are 5 to 15 mm wide, branching pinnately-alternately 4 to 5 times. Branches flattened,  their diameter decreases with the increasing degree of branching. Ultimate branchlets slender and linear with acuminate tips, sometimes forcipate. Margins of the fronds serrate, surfaces of  the axis provided with few spine-like projections. Cross-section of frond shows ganglion-like cells in the medulla connecting the other cells. Cortex consisting of more than 5 layers of very small ovoid or elongated pigmented cells. Thalli to about 35 cm in height (Ref. 80758).					
				
				
						
			
			
			
			
				
					Used for human consumption; source of carrageenan (Ref. 80758). Commonly found attached to rocks in lower intertidal to upper subtidal areas which are moderately exposed to wave action (Ref. 80758).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
									
			
			
			
			
			
				Guiry, M.D. and G.M. Guiry 2009 AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 14 April 2009. (Ref. 80701)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
			
			
			
			
			
			
			
				Human uses  
			
			
				Fisheries: commercial			
			
			
				 | FishSource | 			
			
			
			
			
			
Tools
			
			
			
			
				
					More information				
				
					 Trophic EcologyFood items (preys)
Diet composition
Food consumption
Predators
  Population dynamicsGrowth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
  Life cycleReproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
  PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  				 
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models
			
			
			
									
						Preferred temperature  					
				 (Ref. 
115969): 23.3 - 28.7, mean 27.6 (based on 245 cells).