
Belongs within: Ceramiales.
The Dasyaceae are a family of red algae exhibiting cellulosympodial growth and bearing whorled tetrasporangia in stichidia on determinal laterals (Choi et al. 2002).
Characters (from Choi et al. 2002): Growth cellulosympodial; tetrasporangia whorled, borne in stichidia on determinal laterals; pigmented pseudolaterals present, Y-shaped cell abutments at pseudodichotomies; trichoblasts absent; carposporophyte with basal fusion cell initiated by direct connection between auxiliary cell and fertile central-axial cell, at first bypassing supporting cell but ultimately incorporating it.
<==Dasyaceae [Dasyeae] | i. s.: AmphisbetemaCK02 | SinosiphoniaCK02 | TapeinodasyaCK02 | DasyopsisS57 | |--D. plumosa (Harvey & Bailey) Schmitz 1893 [=Dasya plumosa]S57 | `--D. spinellaPP64 | Falkenbergia rufolanosa [=Polysiphonia rufolanosa]L27 |--DasyoideaeCK02 | | i. s.: ‘Heterosiphonia’ japonicaCK02 | |--*Dasysiphonia chejuensisCK02 | |--*Rhodoptilum plumosumCK02 | |--DipterocladiaCK02 | |--EupogodonCK02 | | |--*E. planusCK02 | | `--E. spinellusCK02 | `--Dasya Agardh 1824CK02 | |--D. arbusculaG64 | |--D. baillouvianaCK02 | |--D. coccineaG64 | |--D. collabens Hooker & Harvey 1845L27 | |--D. haffiaeW03 | |--D. hutchinsiaeCK02 | |--D. ocellataG64 | |--D. sinicolaCK02 | |--D. venustaG64 | `--D. villosaCK02 `--HeterosiphonioideaeCK02 |--ColacodasyaCK02 |--DasyellaCK02 |--DictyurusCK02 | |--*D. purpurascensCK02 | `--D. occidentalisCK02 |--ThuretiaCK02 | |--*T. quercifoliaCK02 | `--T. australasicaCK02 `--Heterosiphonia Montagne 1842CK02 |--*H. berkeleyi Montagne 1842CK02 [=Dasya berkleyiL27] | |--H. b. var. berkleyiL27 | `--H. b. var. squarrosa non H. squarrosaL27 |--H. callithamnionHK90 |--H. concinna (Hooker & Harvey) Falkenberg 1901 [=Dasya concinna]L27 |--H. crassipes (Harvey) Falkenberg 1901HS14 |--H. crispella (Agardh) Wynne 1985 [=Callithamnion crispella Agardh 1828]HL09 |--H. densiuscula Kylin 1925S57 |--H. firma Agardh 1890L27 |--H. gunnianaCK02 |--H. laxa Kylin 1925S57 |--H. muelleriCK02 |--H. plumosaCK02 |--H. pulchraCK02 |--H. punicea (Montagne) Kylin 1919 [=Polysiphonia punicea]L27 |--H. squarrosa [=Dasya squarrosa Hooker & Harvey 1855]L27 |--H. tessellata (Hooker & Harvey) Falkenberg 1901L27 `--H. wurdemanniiHK90
*Type species of generic name indicated
References
[CK02] Choi, H.-G., G. T. Kraft, I. K. Lee & G. W. Saunders. 2002. Phylogenetic analyses of anatomical and nuclear SSU rDNA sequence data indicate that the Dasyaceae and Delesseriaceae (Ceramiales, Rhodophyta) are polyphyletic. European Journal of Phycology 37: 551–569.
[G64] Gray, J. E. 1864. Handbook of British Water-weeds or Algae. R. Hardwicke: London.
[HK90] Huisman, J. M., G. A. Kendrick, D. I. Walker & A. Couté. 1990. The marine algae of Shark Bay, Western Australia. In: Berry, P. F., S. D. Bradshaw & B. R. Wilson (eds) Research in Shark Bay: Report of the France-Australe Bicentenary Expedition Committee pp. 89–100. Western Australian Museum.
[HL09] Huisman, J. M., F. Leliaert, H. Veerbruggen & R. A. Townsend. 2009. Marine benthic plants of Western Australia’s shelf-edge atolls. Records of the Western Australian Museum Supplement 77: 50–87.
[HS14] Huisman, J. M., & A. Sampey. 2014. Kimberley marine biota. Historical data: marine plants. Records of the Western Australian Museum Supplement 84: 45–67.
[L27] Laing, R. M. 1927. A reference list of New Zealand marine algae. Transactions and Proceedings of the New Zealand Institute 57: 126–185.
[PP64] Peres, J. M., & J. Picard. 1964. Nouveau manuel de bionomie benthique de la mer Mediterranee. Recueil des Travaux de la Station Marine d’Endoume, Bulletin 31 (27): 5–137.
[S57] Scagel, R. F. 1957. An annotated list of the marine algae of British Columbia and northern Washington (including keys to genera). National Museum of Canada Bulletin 150: 1–289.
[W03] Womersley, H. B. S. 2003. The Marine Benthic Flora of southern Australia. Rhodophyta—part IIID. Ceramiales—Delesseriaceae, Sarcomeniaceae, Rhodomelaceae. Flora of Australia Supplementary Series 18. Australian Biological Resources Study: Canberra, and the State Herbarium of South Australia: Adelaide.