Turbinaria ornata (Turner) J. Agardh (1848: 266)

Liao, Lawrence M., Belleza, Dominic Franco C. & Geraldino, Paul John L., 2013, Marine algae of the Sulu Sea Islands, Philippines II: annotated list of the brown seaweeds (Phaeophyceae) from the Cuyo Islands, Phytotaxa 152 (1), pp. 1-17 : 10-11

Turbinaria ornata (Turner) J. Agardh (1848: 266)

Basionym: Fucus turbinatus var. ornatus Turner (1807: 50)

Type:—locality unknown.

Remarks:—The pattern of the intramarginal crown teeth is variable among the materials examined. In some, the teeth are restricted to as few as three, usually situated equidistantly from each other. They may also occur in pairs. Teeth may also be many and forming an incomplete ring along the intramarginal edge. In all cases, however, the teeth surround a hollow, central and convex portion. Frequently, the smooth, narrow surface between the intramarginal teeth and outer foliar margin forms a collar or horseshoe shape similar to what Ohba et al. (2007) found among materials from Palau.

Taylor (1964) published the first regional monograph of Turbinaria wherein he recognized a number of forms under T. ornata based on differences of the intramarginal crown teeth arrangement and vesicle presence or absence. Tsuda (1972) opined that these forms may only represent growth forms induced by different environmental conditions. Jha et al. (2009) reported this species from Gujarat in western India but their samples appear to be representative of T. conoides .

Materials examined:—78EM-14 (132-134), 78EM-16 (92), 78EM-17 (115), 78EM-18 (60-62, 456, 457), 78EM-19 (57-60), 78EM-20 (48-55), 78EM-21 (26), 78EM-43 (120-125).

Order Ectocarpales

Family Acinetosporaceae

* Hincksia indica (Sonder) J. Tanaka (1990: 24)

Basionym: Ectocarpus indicus Sonder in Zollinger (1854: 3)

Type:—Bima, Sumbawa Island, Indonesia. Remarks:—This species has been reported from a number of locations around the Philippines as E. indicus ( Silva et al. 1987) . The species from eastern Negros Island reported by Meñez & Calumpong (1981) as Giffordia duchassaingiana ( Grunow 1867: 45) Taylor (1960: 207) has now been recognized as a synonym of the current species. The lack of distinctive characters useful for differentiating closely related genera within this family has contributed to the frequent name changes seen in the literature. In particular, this species has been transferred and recognized at one time or another under four different genera. Beginning from its initial description as a species of Ectocarpus , it has been recognized under Giffordia by Papenfuss & Chihara in Papenfuss (1968), under Feldmannia by Womersley & Bailey (1970) and under Hincksia by Tanaka (1990). Huisman et al. (2007) characterized Hincksia as having meristematic cells that are scattered or diffused throughout the uniseriate filaments, while in Feldmannia they are concentrated at the bases of the branching filaments. In addition, sporangia in Feldmannia generally have stalks, while mostly sessile sporangia are found in Hincksia . Dawes & Mathieson (2008) characterized Feldmannia and Hincksia as having discoid chloroplasts, while in Ectocarpus chloroplasts are elongate, ribbon- or band-shaped. The Cuyo materials are herein recognized under Hincksia based on the basis of sessile sporangia (which could be rarely pedicillate) and diffused meristematic cells. Opinions continue to stay divided concerning the generic placement of this species. For example, Lewmanomont et al. (2007), Dawes & Mathieson (2008), Gan et al. (2008), Kraft (2009) and Lee et al. (2009) maintained this species under Feldmannia whereas Huisman et al. (2007), Yoshida & Yoshinaga (2010) are of the opinion that it should be placed under Hincksia .

Material examined:—78EM-17 (89A).

Family Scytosiphonaceae