Ser. Rhodospbrme^. Fam. Bhodi/meniace<2. 



Plate LXXXVI. 



ERYTHROCLONIUM SONDERI, Haw, 



Gen. Char. Stem terete, its branches constricted as if jointed, composed 

 of an articulated axial filament, and three strata ; the medullary stra- 

 tum composed of longitudinal, interwoven filaments ; the intermediate 

 of several rows of roundish, coloured cellules ; the cortical of very 

 minute, subseriated cellules. Fructification: 1, conceptacles sessile, 

 depressed, umbilicate, opening by a terminal pore, containing, within 

 a thick pericarp, moniliform strings of spores, radiating from a free 

 central placenta ; 2, zonate tetraspores, dispersed through the cortical 

 cells. — Erythroclonium {Sond.), from epv6po<;, red, and kKwv, a 

 branch. 



Frons caide tereti,ramisqiie articulato-constrictis, exfilo centrali articidato et stra- 

 tis tribus celUdarum constUtda ; drato medullari filis temdbus longUudinali- 

 bus intertextis, intermedio cellulis rotundato-angulatis plurmriatis, corticali 

 cellulis minimis subseriatis formato. Fruct. : 1, cystocurpia sessdia, depressa, 

 mnbilicaia, earpostomio demum aperta, intra pericarpium crassum fila spori- 

 fera moniliformia ex placenta centrali radiantia, foventia ; 3, tetrasporae 

 sparsce, zonatim divises. 



Erythroclonium Sondej-i ; stem thick, short, glabrous ; branches tricho- 

 tomous, their joints and the ramuli elliptic-oblong or clavate, very 

 obtuse. 



E. Sonderi; caule brevissimo crasso glabra; ramis trichotome decompositis, 

 articulis ramidisque clavatis elliptico-oblongis obovatisve obtusissimis. 



Erythroclonium Sonderi, Earv. Alg. Exsic. n. 391. 



Ehabdonia Sonderi, Harv. in Trans. R. I. Acad. v. 23, p. 554, excl. Syn, 

 J.Ag. 



Hab. Fremantle, W. H. H., G. Clifton. 



Geogb. Distr. Western Australia. 



Descr. Root discoid. Stem \-\ inch long, sometimes bulbous, 1-3 lines in 

 diameter, solid and rigid, suddenly breaking up into numerous, much di- 

 vided branches. These branches are 4-6 inches long, constricted as if 

 jointed at intervals of about oiie-third of an inch, and sub-trichotomously 

 decompound. The branches and their subdivisions opposite, or occasionally 

 alternate or secund. The ramtdi sometimes subverticillate, four or five 

 springing from a node. In the lower part of old branches the nodes are ob- 

 scurely marked, and the branch becomes solid and subcontinuous, assimilating 

 with the stem ; in all younger parts the constrictions are regular and strong. 



