Ser. Rhodosperme^. Fam. Rhodomelacea. 



Plate CXLIIL 



DASYA HAFFI^, iiarv. 



Gen. Char. Frond filiform or compressed, dendroid ; stem and branches 

 coated with small, polygonal cells (rarely articulated, and many-tubed); 

 the axis articulate, composed of several radiating cells surrounding 

 a central cavity ; ramelli articulated, one-tubed. Fructification : 1, 

 ovate or urceolate ceramidia ; 2, lanceolate stichidia, attached to the 

 ramelli, and containing triangularly-parted tetraspores in tranverse 

 rows. — Dasya {Ag.), from hacvi, hairy. 



Frons fiUformis v. compressa, dendroidea. Caulis ramique majores strata cel- 

 lularum corticati (raro pellucide articidatij, ramellis monosipJimiiis obsessi ; 

 axis articidatus, ex celluUs pluribus radiantihis tubmn centralem cingodlbiis 

 formatus. Fruct. : \, ceramidia ovata v. urceolata ; 3, stichidia lanceolata, 

 ex ramellis eiiata, tetrasporas transversim ordinatas foventia. 



Dasya Haffi/e ; stem tall, villous, opaque, cartilaginous, decompoundly 

 plumoso-pinnate; the virgate, distichous, subtriply-pinnate branches 

 and the patent ramuli densely rameliiferous ; ramelli rosy, clothing all 

 parts, squarrose and curled, dichotomous, with patent axils and 

 scarcely attenuate, subacute points ; articulations of the ramelli once 

 and a half to twice as long as broad ; ceramidia at or near the ends of 

 the ultimate pinnae, sessile, globose, with a prominent orifice, densely 

 clothed with (quasi-) involucral ramelli; stichidia minute, oval, mu- 

 cronate. 



D. Haffiae ; caule elato villoso opaco cartilagineo decomposite plumoso-pinnato ; 

 ramis virgatis distichis subtrijnnnatis ramulisqiie patentibus densissime raraelli- 

 feris ; ramellis roseis undique insertis squarroso-crispatis dicJwtomo-muUifdis, 

 axillis patentibus apice aciitis vix atteuuatis, articulis ramellorum diametro 

 sesqui-subduplo-longioribus ; ceramidiis scepe pinnules ultimos terminantibus 

 globosis ore porrecto densissime ramellis involucratis et vestitis ; sticJiidiis 

 minutis ovalibus mucrnnatis. 



Dasya Haffise, Harv. Alg. Exsic. Austr. n. 223. Earv. in Hook. M. Tasm. 

 V. 2. JO. 303. 



Hab. Philip Island, Western Port, W. H. E. Georgetown, Tasmania, M. 



Gunn. Table Cape, Miss M'Kenzie. 

 Geogr. Distr. Shores of Bass's Straits. 



Descr. Root discoid. Frond 12-18 inches high, and as much in the expansion 

 of the branches, the stem and principal branches 1-1^ lines in diameter. 

 Stem undivided or forked, closely set throughout with patent distichous 



