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Description: |
Thallus erect, iridescent blue and green in the field, or light brown, often with dark olive-brown bands, branching dichotomous. Blades strap-shaped, with smooth margins, 3-5 mm wide, 100-140 μm thick. Medulla of one cell layer. Surface hairs uncommon. De Clerck (2003) notes that De Clerck & Coppejans (1997b: 414-415) showed after verification of the type specimen that D. bartayresiana contains no surface proliferations or involucrate sporangia thus agreeing with Kützing (1859: 8. pl. 16, fig. 1) and Taylor (1960: 219, pl. 30, fig.2) and contrary to Vickers (1908: 38, pl. 12-13) an Jaasund (1970: 72, fig. 1D, 2C). |
| Biogeography |
Atlantic Islands, southern USA, Pacific Mexico, Caribbean Islands, Brazil, Venezuela, Africa, Indian Ocean Islands, South-west Asia, Japan, Taiwan, South-east Asia, Australia and New Zealand, Pacific Islands, Atlantic Islands, Panama. |
| References |
Braune, W. (2008). Meeresalgen. Ein Farbbildführer zu den verbreiteten benthischen Grün- Braun- und Rotalgen der Weltmeere. pp. [1]-596, 266 pls. Ruggell: A.R.G. Gantner Verlag. Dawes, C.J. & Mathieson, A.C. (2008). The seaweeds of Florida. pp. [i]- viii, [1]-591, [592], pls I-LI. Gainesville, Florida: University Press of Florida. De Clerck, O. (2003). The genus Dictyota in the Indian Ocean. Opera Botanica Belgica 13: 1-205, 54 figs, 12 tables. Pedroche, P.F., Silva, P.C., Aguilar Rosas, L.E., Dreckmann, K.M. & Aguilar Rosas, R. (2008). Catálogo de las algas benthónicas del Pacífico de México II. Phaeophycota. pp. [i-viii], i-vi, 15-146. Mexicali & Berkeley: Universidad Autónoma Metropolitana and University of California Berkeley. Skelton, P.A. & South, G.R. (2007). The benthic marine algae of the Samoan Archipelago, South Pacific, with emphasis on the Apia District. Nova Hedwigia Beihefte 132: 1-350. Tsuda, R.T. (2004). Dictyota (Phaeophyceae) from Micronesia. In: Taxonomy of Economic Seaweeds with reference to the Pacific and other locations. (Abbott, I.A. & McDermid, K.J. Eds) Vol.9, pp. 41-56. |
| Habitat: |
Found in intertidal pools, epiphytic on other seaweeds. |
| Type information: |
Type locality: Antilles, West Indies (Silva, Basson & Moe 1996: 586). Lectotype: CN C7F99 (De Clerck 2003: 163). Notes: De Clerck & Coppejans (1997b: 414-415) showed after verification of the type specimen that D. bartayresiana contains no surface proliferations or involucrate sporangia thus agreeing with Kützing (1859: 8, pl. 16, fig.1) and Taylor (1960: 219, pl. 30, fig.2) and contrary to Vickers (1908: 38, pl. 12-13)and Jaasund (1970: 72, fig. 1D, 2C). The species incorrectly called D. bartayresiana by Vickers has been shown by De Clerck & Coppejans to be referable to D. crispata Lamouroux. De Clerck, in Skelton & South (2004: 295), suggests that the type locality is Haiti. |
