542 
Dr. W. II. Harvey’s Account of the Marine Botany of 
104. Dasya Gunniana, Ilarv. Ner. Austr., t. 17. On the reef called “ The Natural Jetty,” Eott- 
nest (211). 
105. Dasya elongata, Send. Abundant at Fremantle, and Eottnest, and King George’s Sound (59). 
106. Dasya Cliftoni, n. sp. ; caule elongate (pedal! et ultra) tenui flexuoso v. scandente glabro 
omnino corticato subdistiche ramoso bi-tripinnato, pinnispatentibusglabris; pinnulis alter- 
nis remotiusculis ramellosis ; ramellis multoties divaricato-dichotomis vix attenuatis obtusis 
monosiphoniis, articulis cylindraceis, diametro 3-4-plo-longioribus. Dredged in Fremantle 
Harbour, by G. Clifton, Esq., after whom this beautiful plant is deservedly named. I also 
collected it at Garden Island and Eottnest, and afterwards at King George’s Sound (164). 
107. Dasya frutescens, n. sp. ; caule (2-4 unciali) vage ramosissimo glabro corticato; ramis quo- 
quoversum directis patentibus bis-terve divisis attenuatis, minoribus ramellis vestitis; ra- 
mellis pluries dichotomis vix attenuatis obtusis, segmentis falcato-recurvis v. incurvis, ar- 
ticulis diametro 2-3-plo-longioribus ; ceramidiis sessilibus urceolatis ore porrecto ; stichidiis 
minutis sessilibus oblongis acutis. Eottnest, on Zostera. Something like a small form of 
D. elongata, but with much more slender and longer jointed ramelli. It is perhaps nearer 
to D. arhuscula, with which, however, it does not agree (303). 
108. Dasya ^roMma, n. sp. ; fronde crassa corticata vage ramosa; ramis elongatis virgatis simpli- 
cibus vel ramos 2-3 consimiles lateraliter ferentibus, ramis omnibus ramulos breves quo- 
quoversum emittentibus ; ramulis corticatis simplicibus v. iterum ramosis, junioribus 
ramellis vestitis; ramellis subverticillatis dichotomis e basi lata conspicue attenuatis, axillis 
patentibus, apicibus filiformibus obtusis, articulis diametro 3-4-plo-longioribus ; ceramidiis 
ramulos primarios terminantibus urceolatis ore brevi prominulo. Cast ashore at Middleton 
Bay, King George’s Sound, August. Nearly allied to D. elongata, but the ramelli are very 
different, quickly melting in fresh water. It is a much larger plant than D. naccarioidts, 
with larger ramelli and longer joints (336). 
109. Dasya collabens, Harv. Ner. Austr., t. 21. King George’s Sound, rare (58). 
110. T>A.s'i^^Wrangelioides, n. sp. ; caule gracili (2-3 unciali) pellucide articulate 10-12-siphonio 
distiche ramoso omnibus partibus ramellis vestito; ramis patentibus sursum curvatis sim- 
plicibus V. iterum alterne ramosis; ramellis densissimis multoties divaricato-dichotomis 
acutis, articulis diametro sesquilongioribus ; ceramidiis ; stichidiis minutissimis 
ovato-acuminatis. Parasitical on Caulinia antarctica. Fremantle, King George’s Sound, 
and Cape Eiche. A very distinct species, named from its external resemblance to Wran- 
gelia vdutina (272). 
111. Dasya multiceps, n. sp. ; caule subnullo (fere bulboso!) mox in ramos numerosissimos erectos 
diviso; ramis (2-3 uncialibus) simplicibus pellucide articulatis, articulis diametro subbre- 
vioribus polysiphoniis, pinnatis v. apioe bipinnatis, ambitu linearibus v. lineari-spathulatis ; 
pinnis oligosiphoniis alternis approximatis brevissimis superioribus sensim longioribus ra- 
mellosis ; ramellis alternis pluries dichotomis paruin attenuatis obtusis. On sand-covered 
rocks, half buried in sand, on the Natural Jetty reef, Eottnest, June. The specimens are 
not in fruit, and probably but half grown. There is an evident tendency in the upper 
pinnse to lengthen and become compound (251). 
