544 Dr. W. H. Harvey's Account oftlie Marine Botany of 



Order II.— LAUEENCIACE^. 



120. Delisia ;)ufc^ra, Grev. Eottnest Island, rare (239). 



121. AsPARAGOPsis .^nw/ort^mria, n. sp. ; surculo valido ramosissimo repente caules plures emit- 



tente; caulibus erectis simplicibus e basilongenudis supra ramellis thyrsoideo-penicillatis ; 

 penicillis ramellorum quoquoversum egredientibus eximie obtusis; pinnellis oppositis fili- 

 formibus crispato-incurvis ; ceramidiis globosis inferne in pedunculo clavato attenuatis. Gar- 

 den Island and Rottnest. A very distinct and noble species, much larger and more robust 

 than A. Delilei, ivith which, however, I cannot at present further compare it. The much- 

 branched surculi are as thick as crowquills; the stems, equally thick, are 3-8 inches long, 

 or more, ending in a very dense, deep purple coma. The fasciculi of ramelli are remark- 

 ably ohtme in outline. I name it in honour of W. A. Sakford, Esq., Colonial Secretary of 

 Western Australia, with whom I had some pleasant sea-side walks, and to whom, during 

 my stay in the colony, I am indebted for much kind attention and assistance (124). 



122. AsPARAGOPSis armata, n. sp. ; surculo ultra-setaceo parura ramoso repente caules pinres emit- 



tente; caulibus erectis ramosis usque ad basin ramellis obsitis v. brevissime nudis; ramis 

 secundariis consimilibus ad basin armatis ramulis subternis nudis retrorsum aculeatis; 

 penicillis ramellorum subdistichis ambitu ovatis acutis; pinnellis oppositis; ceramidiis glo- 

 bosis; pedunculo cylindraceo. Garden Island and King George's Sound (1 93). Also from 

 Tasmania, S. Gunn, Esq. Whether this be what I have figured for .4. Deliki, in Ner. Austr., 

 t. 35, I cannot at present say, not having the book at hand. If not, I at least confounded it 

 with that species. It differs from the European plant in having branched stems, feathered 

 with ramelli nearly to the base; and in having two or three naked branchlets armed with 

 reflexed prickles issuing from the lower side of every main branch, near the base. The frond 

 is from 6-10 inches long, twice as thick as hog's bristle, and of a pale red colour. 



123. Laurencia Forsteri, Grev. On Caulinia stems, &c., very common (103 and 126). No. 126 



is var. /3. data, Sond. A much larger and stronger form than the common one. 



124. Laurencia obtusa, Lx. King George's Sound and Rottnest, on Algw (67). 



125. Laurencia sp. .. . On rocks. King George's Sound and Rottnest, near low- water (6). Either 



a larger form of L, obtusa, or a new species. 



126. Laurencia affinis, Sond. Cape Riche (310). 



127. Laurencia arbvscula, Sond. Cape Riche (309). 



128. Laurencia cruciata, n. sp. ; livido-purpurea, caspitosa; fronde tereti rigida quoquoversum 



ramosa; ramis ramulisque paten tissimis oppositis verticillatisve raro alternis, ramulis juni- 

 oribus cy lindricis truncatis, fructiferis verrucoso-glandulosis. This requires to be compared 

 with L. paniculata, J. Ag., of which I have no specimen. My plant is extremely hard and 

 rigid, scarcely adhering to paper after two days' maceration in fresh water. Agardh com- 

 pares his plant with L.obtusa, with which mine cannot be confounded. On Caulinia stems, 

 Rottnest (209). 



129. Laurencia heleroclada, n. sp. ; densisslme csespitosa, e surculis repentibus orta; fronde livido- 



purpurea tereti rigida tenaci; junior! pluries secunde ramosa, ramis ramulisque erecto- 



