1. Species Dasya abbottiana D.L.Ballantine & N.E.Aponte, 2004
2. Species Dasya adela Heggøy, Rueness & Sjøtun, 2016
3. Species Dasya anastomosans (Weber Bosse) M.J.Wynne, 2002
4. Species Dasya antillarum (M.A.Howe) A.J.K.Millar, 1996
5. Species Dasya aperta (Weber Bosse) A.J.K.Millar, 1996
6. Species Dasya apiculata (C.Agardh) J.Agardh, 1863
7. Species Dasya atactica J.Agardh, 1890
8. Species Dasya atropurpurea Vroom, 2005
9. Species Dasya baldockii Parsons & Womersley, 1998
10. Species Dasya binghamiae A.J.K.Millar, 1996
11. Species Dasya boninensis M.Masuda, A.Kurihara & K.Kogame, 2007
12. Species Dasya brasiliensis E.C.Oliveira Filho & Y.Y.Braga, 1971
13. Species Dasya capillaris J.D.Hooker & Harvey, 1847
14. Species Dasya caraibica Børgesen, 1919
15. Species Dasya ceramioides Harvey, 1844
16. Species Dasya cernua A.J.K.Millar, 1990
17. Species Dasya chilensis (Kützing) Montagne
18. Species Dasya clavigera (Womersley) Parsons, 1975
19. Species Dasya cliftonii Harvey, 1855
20. Species Dasya collabens J.D.Hooker & Harvey, 1845
21. Species Dasya collinsiana M.Howe, 1918
22. Species Dasya comata Parsons & Womersley, 1998
23. Species Dasya corymbifera J.Agardh, 1841
24. Species Dasya crassa J.Agardh
25. Species Dasya crescens Parsons & Womersley, 1998
26. Species Dasya crinita Parsons & Womersley, 1998
27. Species Dasya crouaniana J.Agardh, 1890
28. Species Dasya cryptica C.W.Schneid., Quach & C.E.Lane, 2017
29. Species Dasya cuspidifera Sonder, 1871
30. Species Dasya cylindrica Noda, 1972
31. Species Dasya dalmatica Meneghini
32. Species Dasya divergens Parsons & Womersley, 1998
33. Species Dasya eastwoodae Setchell & N.L.Gardner, 1930
34. Species Dasya echigoensis Noda, 1972
35. Species Dasya echinata Stegenga, Bolton & R.J.Anderson, 1997
36. Species Dasya elongata Sonder, 1845
37. Species Dasya elongata Noda, 1972
38. Species Dasya enomotoi Y.Yamagishi, M.Masuda & T.Abe, 2014
39. Species Dasya extensa Sonder ex Kützing, 1864
40. Species Dasya festiva Meneghini
41. Species Dasya flagellifera Børgesen, 1934
42. Species Dasya flocculosa Zanardini, 1858
43. Species Dasya frutescens Harvey, 1855
44. Species Dasya fruticulosa A.H.S.Lucas, 1935
45. Species Dasya haffiae Harvey, 1859
46. Species Dasya haitiana S.Fredericq & J.N.Norris, 1986
47. Species Dasya hapalathrix Harvey, 1859
48. Species Dasya harveyi Ashmead, 1858
49. Species Dasya helenae Farlow
50. Species Dasya hookeri Parsons & Womersley, 1998
51. Species Dasya hussoniana Montagne, 1849
52. Species Dasya hutchinsiae Harvey, 1833
53. Species Dasya iridescens (Schlech) A.J.K.Millar & I.A.Abbott, 1996
54. Species Dasya iyengarii Børgesen, 1937
55. Species Dasya jadertina Sandri ex Kützing, 1864
56. Species Dasya kamortensis V.Krishnamurthy & Varadarajan, 1992
57. Species Dasya kraftii Parsons & Womersley, 1998
58. Species Dasya kristeniae I.A.Abbott, 1998
59. Species Dasya kuetzingiana Biasoletto
60. Species Dasya lauterbachii Askenasy & Schmidle
61. Species Dasya longifila M.Masuda & S.Uwai, 2003
62. Species Dasya macroura Harvey
63. Species Dasya macrura Meneghini
64. Species Dasya magnei D.L.Ballantine, 2000
65. Species Dasya malaccensis Masuda & Uwai, 2003
66. Species Dasya minor Noda, 1971
67. Species Dasya mollis Harvey, 1853
68. Species Dasya murrayana I.A.Abbott & A.J.K.Millar, 1998
69. Species Dasya naccarioides Harvey, 1844
70. Species Dasya ocellata (Grateloup) Harvey, 1833
71. Species Dasya ornithorhyncha Montagne
72. Species Dasya pachyclada Harvey, 1863
73. Species Dasya pacifica Harvey ex J.Agardh, 1863
74. Species Dasya pallescens Kützing
75. Species Dasya palmatifida (Weber-van Bosse) A.J.K.Millar & Coppejans, 2000
76. Species Dasya patens Greville
77. Species Dasya patentissima Pena-Martín, M.B.Crespo & Gómez Garreta, 2014
78. Species Dasya pedicellata (C.Agardh) C.Agardh, 1824
79. Species Dasya penicillata Zanardini, 1865
80. Species Dasya petrophila W.R.Taylor
81. Species Dasya puertoricensis I.Y.López-Piñero & D.L.Ballantine, 2001
82. Species Dasya punicea (Zanardini) Meneghini ex Zanardini, 1841
83. Species Dasya quadrispora Parsons & Womersley, 1998
84. Species Dasya ramosissima Harvey, 1853
85. Species Dasya rigescens Zanardini, 1865
86. Species Dasya rigidula (Kützing) Ardissone, 1878
87. Species Dasya roslyniae A.J.K.Millar & Chidgey, 1996
88. Species Dasya scoparia Harvey, 1841
89. Species Dasya scopulifera Harvey, 1863
90. Species Dasya sessilis Yamada, 1928
91. Species Dasya sinicola (Setchell & N.L.Gardner) E.Y.Dawson, 1959
92. Species Dasya spinigera E.Y.Dawson, 1963
93. Species Dasya spinuligera Collins & Hervey, 1917
94. Species Dasya spongiosa C.Agardh
95. Species Dasya spyridioides Falkenberg, 1901
96. Species Dasya stanleyi (Weber-van Bosse) A.J.K.Millar, 1996
97. Subgenus Dasya subg. Compsoteia
98. Subgenus Dasya subg. Dasyopsis
    1. Species Dasya subg. Dasyopsis atactica J. Agardh, 1890 represented as Dasya atactica J.Agardh, 1890
99. Subgenus Dasya subg. Eupogodon
100. Subgenus Dasya subg. Lophothalia
101. Subgenus Dasya subg. Pachydasya
     1. Species Dasya subg. Pachydasya wilsonis J. Agardh, 1890 represented as Dasya wilsonis J.Agardh, 1890
102. Subgenus Dasya subg. Rhodonema
     1. Species Dasya subg. Rhodonema meredithiae J. Agardh, 1890 represented as Dasya meredithiae J.Agardh, 1890 accepted as Dasya haffiae Harvey, 1859
103. Species Dasya subtilis Lindauer, 1949
104. Species Dasya tenuis Parsons & Womersley, 1998
105. Species Dasya trichophora A.J.K.Millar, 1990
106. Species Dasya ulhasii S.U.Jadiuye & P.S.N.Rao, 2007
107. Species Dasya villosa Harvey, 1844
108. Species Dasya wilsonis J.Agardh, 1890
109. Species Dasya abyssicola E.Y.Dawson, 1949 accepted as Dasya sinicola var. abyssicola (Dawson) Dawson, 1963 (synonym)
110. Species Dasya adhaerens Yamada, 1944 accepted as Dasya anastomosans (Weber Bosse) M.J.Wynne, 2002
111. Species Dasya adunca J.Agardh, 1890 accepted as Thaumatella adunca (J.Agardh) Parsons & Womersley, 1998
112. Species Dasya apiculata (C.Agardh) De Toni, 1903 accepted as Dasya apiculata (C.Agardh) J.Agardh, 1863
113. Species Dasya arbuscula Harvey, 1849 accepted as Dasya hutchinsiae Harvey, 1833 (synonym)
114. Species Dasya arbuscula (Dillwyn) C.Agardh, 1828 accepted as Aglaothamnion sepositum (Gunnerus) Maggs & Hommersand, 1993 accepted as Gaillona seposita (Gunnerus) Athanasiadis, 2016
115. Species Dasya archeri Harvey, 1859 accepted as Dasyclonium flaccidum (Harvey) Kylin, 1956
116. Species Dasya australis J.Agardh, 1863 accepted as Heterosiphonia australis (J.Agardh) De Toni, 1903
117. Species Dasya baillouviana (S.G.Gmelin) Montagne, 1841 accepted as Dasya pedicellata (C.Agardh) C.Agardh, 1824
118. Species Dasya berkeleyi (Montagne) J.Agardh, 1863 accepted as Heterosiphonia berkeleyi Montagne, 1842
119. Species Dasya bolbochaete Harvey, 1844 accepted as Doxodasya bolbochaete (Harvey) Falkenberg, 1901
120. Species Dasya californica N.L.Gardner, 1927 accepted as Dasya sinicola var. californica (Gardner) Dawson, 1963 (synonym)
121. Species Dasya calliptera Sonder ex Kützing, 1864 accepted as Heterosiphonia australis (J.Agardh) De Toni, 1903 (synonym)
122. Species Dasya callithamnium (Sonder) Harvey, 1855 accepted as Heterosiphonia callithamnium (Sonder) Falkenberg, 1901
123. Species Dasya cattloviae Gatty, 1863 accepted as Dasya punicea (Zanardini) Meneghini ex Zanardini, 1841
124. Species Dasya cervicornis J.Agardh, 1841 accepted as Eupogodon planus (C.Agardh) Kützing, 1845
125. Species Dasya coccinea (Hudson) Areschoug, 1845 accepted as Heterosiphonia plumosa (J.Ellis) Batters, 1902
126. Species Dasya corallicola Funk, 1927 accepted as Polysiphonia biformis Zanardini, 1860 (synonym)
127. Species Dasya crassipes Harvey, 1855 accepted as Heterosiphonia crassipes (Harvey) Falkenberg, 1901
128. Species Dasya crispa Suhr, 1840 accepted as Heterosiphonia crispa (Suhr) Falkenberg, 1901
129. Species Dasya crouanioides Sonder, 1853 accepted as Ptilocladia crouanioides (Sonder) Womersley, 1998
130. Species Dasya curdieana Harvey, 1863 accepted as Heterosiphonia curdieana (Harvey) Reinbold, 1899
131. Species Dasya decipiens Sonder, 1855 accepted as Dasya naccarioides Harvey, 1844 (synonym)
132. Species Dasya delilei Montagne, 1841 accepted as Asparagopsis taxiformis (Delile) Trevisan de Saint-Léon, 1845 (synonym)
133. Species Dasya dictyuroides J.Agardh, 1890 accepted as Wilsonaea dictyuroides (J.Agardh) F.Schmitz, 1893
134. Species Dasya dubia Suhr, 1840 accepted as Heterosiphonia dubia (Suhr) Falkenberg, 1901
135. Species Dasya elegans (G.Martens) C.Agardh, 1828 accepted as Dasya baillouviana (S.G.Gmelin) Montagne, 1841 accepted as Dasya pedicellata (C.Agardh) C.Agardh, 1824 (synonym)
136. Species Dasya feredayae Harvey, 1859 accepted as Micropeuce feredayae (Harvey) Kylin ex P.C.Silva, 1996
137. Species Dasya gibbesii Harvey, 1853 accepted as Heterosiphonia gibbesii (Harvey) Falkenberg, 1901
138. Species Dasya guichensis Reinbold, 1897 accepted as Heterosiphonia wrangelioides (Harvey) Reinbold, 1899 (synonym)
139. Species Dasya gunniana (Harvey) Harvey, 1847 accepted as Heterosiphonia gunniana (Harvey) Reinbold, 1899
140. Species Dasya harveyi Kützing, 1864 accepted as Lophocladia kuetzingii (Kuntze) P.C.Silva, 1996
141. Species Dasya hirta J.Agardh, 1894 accepted as Doxodasya hirta (J.Agardh) Womersley & Parsonss, 2003
142. Species Dasya hormoclados J.Agardh, 1841 accepted as Lophothalia hormoclados (J.Agardh) J.Agardh, 1890
143. Species Dasya indica J.Agardh, 1886 accepted as Amphisbetema indica (J.Agardh) Weber-van Bosse, 1913
144. Species Dasya lallemandii Montagne, 1849 accepted as Lophocladia lallemandii (Montagne) F.Schmitz, 1893 accepted as Lophocladia trichoclados (C.Agardh) F.Schmitz, 1893
145. Species Dasya lawrenciana (Harvey) Harvey, 1847 accepted as Heterosiphonia lawrenciana (Harvey) Parsons, 1975 (synonym)
146. Species Dasya lenormandiana J.Agardh, 1863 accepted as Doxodasya lenormandiana (J.Agardh) F.Schmitz, 1893
147. Species Dasya lophoclados Montagne, 1842 accepted as Lophocladia trichoclados (C.Agardh) F.Schmitz, 1893 (synonym)
148. Species Dasya mazei (P.L.Crouan & H.M.Crouan) G.Murray, 1888 accepted as Dasya baillouviana (S.G.Gmelin) Montagne, 1841 accepted as Dasya pedicellata (C.Agardh) C.Agardh, 1824
149. Species Dasya meredithiae J.Agardh, 1890 accepted as Dasya haffiae Harvey, 1859
150. Species Dasya microcladioides J.Agardh, 1890 accepted as Heterosiphonia microcladioides (J.Agardh) Falkenberg, 1901
151. Species Dasya mirabilis (Zanardini) Bertoloni, 1862 accepted as Halydictyon mirabile Zanardini, 1843 (synonym)
152. Species Dasya mucronata Harvey, 1853 accepted as Heterodasya mucronata (Harvey) M.J.Wynne, 2005
153. Species Dasya muelleri Sonder, 1855 accepted as Heterosiphonia muelleri (Sonder) De Toni, 1903
154. Species Dasya multiceps Harvey, 1855 accepted as Heterosiphonia multiceps (Harvey) Falkenberg, 1901
155. Species Dasya notoensis Okamura, 1896 accepted as Heterosiphonia pulchra (Okamura) Falkenberg, 1901
156. Species Dasya obscura Dickie, 1874 accepted as Heterosiphonia obscura (Dickie) Baardseth, 1941
157. Species Dasya ornithoryncha Montagne, 1846 accepted as Eupogodon planus (C.Agardh) Kützing, 1845
158. Species Dasya pallida Sonder, 1845 accepted as Wrangelia plumosa Harvey, 1844 (synonym)
159. Species Dasya pectinata (J.D.Hooker & Harvey) J.D.Hooker & Harvey, 1847 accepted as Picconiella pectinata (J.D.Hooker & Harvey) G.De Toni, 1936
160. Species Dasya pellucida Harvey, 1849 accepted as Heterosiphonia pellucida (Harvey) Falkenberg, 1901
161. Species Dasya pilosa (Weber-van Bosse) A.J.K.Millar, 1990 accepted as Dasya anastomosans (Weber Bosse) M.J.Wynne, 2002 (synonym)
162. Species Dasya plana C.Agardh, 1827 accepted as Eupogodon planus (C.Agardh) Kützing, 1845 (synonym)
163. Species Dasya plumigera Harvey, 1855 accepted as Heterosiphonia muelleri (Sonder) De Toni, 1903
164. Species Dasya plumosa Harvey & Bailey, 1851 accepted as Rhodoptilum plumosum (Harvey & Bailey) Kylin, 1956
165. Species Dasya proxima Harvey, 1855 accepted as Micropeuce proxima (Harvey) Womersley & Parsons, 2003 (synonym)
166. Species Dasya pulchra Okamura, 1896 accepted as Heterosiphonia pulchra (Okamura) Falkenberg, 1901
167. Species Dasya sarcocaulon Harvey, 1863 accepted as Micropeuce sarcocaulon (Harvey) Kylin ex P.C.Silva, 1996
168. Species Dasya scoparca Harvey accepted as Dasya scoparia Harvey, 1841 (misspelling)
169. Species Dasya sertularioides M.A.Howe & W.R.Taylor, 1931 accepted as Heterodasya mucronata (Harvey) M.J.Wynne, 2005
170. Species Dasya simpliuscula C.Agardh, 1828 accepted as Dasya ocellata (Grateloup) Harvey, 1833
171. Species Dasya spinella C.Agardh, 1827 accepted as Eupogodon planus (C.Agardh) Kützing, 1845
172. Species Dasya squarrosa (Kützing) Rabenhorst, 1847 accepted as Dasya rigidula (Kützing) Ardissone, 1878
173. Species Dasya squarrosa J.D.Hooker & Harvey, 1855 accepted as Heterosiphonia squarrosa (Kuntze) De Toni, 1903
174. Species Dasya stanfordiana Farlow, 1902 accepted as Dasya pedicellata subsp. stanfordiana (Farlow) J.N.Norris & Bucher, 2014 (synonym)
175. Species Dasya struthiopenna J.Agardh, 1863 accepted as Heterosiphonia muelleri (Sonder) De Toni, 1903
176. Species Dasya stuposa J.Agardh, 1863 accepted as Heterosiphonia stuposa (J.Agardh) De Toni, 1903
177. Species Dasya subsecundata Suhr, 1840 accepted as Heterosiphonia subsecundata (Suhr) Falkenberg, 1901
178. Species Dasya tasmanica Sonder, 1853 accepted as Dasya naccarioides Harvey, 1844 (synonym)
179. Species Dasya tenella Hering, 1841 accepted as Herposiphonia heringii (Harvey) Falkenberg, 1901
180. Species Dasya tenera Harvey, 1855 accepted as Sarcotrichia tenera (Harvey) Womersley & Shepley, 1959
181. Species Dasya tessellata Harvey, 1855 accepted as Heterosiphonia tessellata (Harvey) Reinbold, 1899
182. Species Dasya tingens Harvey & Mueller ex Kützing, 1864 accepted as Dasya ceramioides Harvey, 1844 (synonym)
183. Species Dasya tumanowiczii Gatty ex Harvey, 1853 accepted as Wrightiella tumanowiczii (Gatty ex Harvey) F.Schmitz, 1893
184. Species Dasya urceolata Harvey ex J.Agardh, 1863 accepted as Haplodasya urceolata (Harvey ex J.Agardh) M.J.Parsons, 1975
185. Species Dasya velutina Sonder, 1845 accepted as Wrangelia velutina (Sonder) Harvey, 1855
186. Species Dasya velutina J.Agardh, 1890 accepted as Dasya divergens Parsons & Womersley, 1998
187. Species Dasya venusta Harvey, 1849 accepted as Dasya corymbifera J.Agardh, 1841
188. Species Dasya verticillata Harvey, 1844 accepted as Lophothalia verticillata (Harvey) Kützing, 1849
189. Species Dasya wrangelioides Harvey, 1855 accepted as Heterosiphonia wrangelioides (Harvey) Reinbold, 1899
190. Species Dasya wurdemannii Bailey ex Harvey, 1853 accepted as Heterosiphonia crispella (C.Agardh) M.J.Wynne, 1985
191. Species Dasya concinna (J.D.Hooker & Harvey) J.Agardh (uncertain)
192. Species Dasya dichotomoflabellata P.L.Crouan & H.M.Crouan (uncertain)
193. Species Dasya divaricata Zanardini (uncertain)
194. Species Dasya guernisaci (P.L.Crouan & H.M.Crouan) P.L.Crouan & H.M.Crouan (uncertain)
195. Species Dasya pinnatifolia (Suhr) F.Schmitz (uncertain)
196. Species Dasya sanguinea Montagne (uncertain)
197. Species Dasya schmidtiana Sonder (uncertain)
198. Species Dasya spinulosa C.Agardh (uncertain)
199. Species Dasya trichoclados (Agardh) J.Agardh (uncertain)

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