Ser. RnoDOSPEitME/E. Tarn. Ilhodomelacece. 



Plate XXXI. 



DASYA MUELLERI, Sond. 



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 numerous radiating cells surrounding 

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

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

 ramelli, and containing triangularly-parted tetraspores in transverse 

 rows. — Dasya (Ag.), from 6Wu?, hairy. 



From filiformis v. compressa, dendroidea. Caulis ramique majores strato cellu- 

 larum corticati (raro pellucide articnlati) ramellis monosiphoniis obsessi ; axis 

 articulatus, ex cellulis pluribus radiantibus tubum centralem cingentibus for- 

 matus. Fruct.: 1, ceramidia ovata v. urceolata ; 2, stickidia lanceolata, ex 

 ramellis enata, tetrasporas transversim ordinatas foventia. 



Dasya Muelleri; stem elongate (a foot or more in length), robust, densely 

 hairy, subdichotomous ; secondary branches very long (1-2 feet), 

 much more slender than the stem, glabrous, corticated, simple, often 

 naked below, plumoso-pinnated above ; pinnse alternate, close, hori- 

 zontal, subarticulate, pinnulate ; pinnules very short, few-tubed, 

 ramelliferous ; ramelli dichotomous, attenuated, obtuse, their articula- 

 tions 2-4 times longer than broad ; ceramidia large, pedicellate, 

 inflated, with a prominent orifice; stichidia minute, linear-oblong, 

 acute at each end. 



D. Muelleri ; caide elongato (pedali et ultra) crasso villoso sahdichotomo ; 

 ramis secundariis longissimis fl-2-pedalibusJ caule multo temdoribus glabris 

 corlicatis simplicibus ii/ferne scepe denudatis superne pulcherrime plumoso- 

 pinualis ; pinnis alternis crebris horizontalibus plus minus ecorticatis poly- 

 siphoniis iterum pinnidutis ; pinnulis oligosiphoniis brevissiviis ramelliferis ; 

 ramellis dichoiomis attenuatis obtusis, articulis diametro 9-4>-plo longioribus ; 

 ceramidiis magnis peduqculatis injlato-ovatis, ore prominulo ; stichidiis minu- 

 tis oblong is acutis. 



Dasya Muelleri, Sond. in Linn. v. 26. p. 525. 



Dasya plumigera, Harv. in Trans. R. I. Acad. v. 22. p. 543 ; Alg. Austr. 

 Exsic. n. 208. 



Hab. On the western and southern shores of Australia; particularly abun- 

 dant and of large size in King George's Sound, W. II. H. Mouth 

 of Glenelg River, Br. Curdle (1850). Port Phillip, Br. F. Mueller 

 (1S52). Coast of Tasmania, Mr. Gunn, W.H.H. 



Geoge. Distr. As above. 



