Lobophora sp

Kwan, Valerie, Yip, Zhi Ting, Fong, Jenny & Huang, Danwei, 2021, Diversity and phylogeny of the brown alga Lobophora (Dictyotales, Phaeophyceae) in Singapore, Phytotaxa 496 (3), pp. 215-227 : 224

Lobophora sp 61 Vieira et al. 2019a

Specimen observed:— LOBO29 (Reef Ecology Laboratory, NUS)

Description:— Thallus exhibits decumbent growth form ( Fig. 4J ). Base of thallus narrow, growing with basal parts attached to substrate and distal parts curving upwards. Margin entire. Thallus large, 7 cm wide and 5 cm tall, reddish brown. Thallus 186–206 μm thick, composed of a single layer of medulla cells, 2–3 layers of dorsal cortical cells, and 2–3 layers of ventral cortical cells ( Fig. 4K and 4L ). Medulla cells 48–67 μm wide and 56–87 μm thick. Dorsal and ventral cortical cell layers 48–62 μm and 68–76 μm thick respectively.

Distribution:— Papua New Guinea ( Vieira et al. 2019a), Singapore (this study).

Habitat:—Reef slope (5–8 m depth). Attached to hard substratum with other algae growing epiphytically on it.

Figures

FIGURE 4. Morphological observations of Lobophora species found in Singapore. Lobophora challengeriae in situ (A), L. challengeriae longitudinal section (B), L. challengeriae transverse section (C). Lobophora lamourouxii in situ (D) (inset: sori), L. lamourouxii longitudinal section (E), L. lamourouxii transverse section (F). Lobophora pachyventera morphotype 1 in situ (G) (inset: morphotype 2), L. pachyventera longitudinal section (H), L. pachyventera transverse section (I). Lobophora sp61 in situ (J), Lobophora sp61 longitudinal section (K), Lobophora sp61 transverse section (L). The metallic scale is 2.5 cm in width (A, D, G, J). Scale bars represent 0.1 mm.