Ahermatypic corals (Scleractinia: Dendrophylliidae, Oculinidae and Rhizangiidae) recorded from submarine caves in Hong Kong Author Lam, Katherine Author Morton, Brian Author Hodgson, Paul text Journal of Natural History 2008 2008-03-31 42 9 - 12 729 747 http://dx.doi.org/10.1080/00222930701862724 journal article 10.1080/00222930701862724 1464-5262 5224891 Dendrophyllia ehrenbergiana ( Milne-Edwards & Haime, 1848 ) ( Figure 1J–L ) Coenopsammia ehrenbergiana Milne-Edwards & Haime, 1848 Dendrophyllia coarctata Duncan, 1886:17–18 , Plate 1, Figs 27, 28; Ogawa and Takahashi 1995:21 , Plate 6, Fig. 8–13, Plate 7, Fig. 10–11 Dendrophyllia ehrenbergiana van der Horst, 1922:55 , Plate VII, Figs 3–4 Description Colonial coralla of this species which occur in Hong Kong’s marine caves are phaceloid with short polyps (up to, 8 mm in height, and 14.6 mm and 10.2 mm in longer and shorter diameters, respectively) and have a thick epithecal wall. Dendroid colonies are also known ( Scott 1984 ). New polyps develop by extratentacular budding on basal expansions. Colony size ranges from 40 mm to 60 mm in length and width and 20–40 mm in height. Corallite is oval, with a length ranging from 8–12 mm , width from 6–10 mm and height from 5–9 mm . Septal order is hexameral with a duplicate P. plan and in four cycles. Ventral septa in five cycles. The triple P. plan is formed by fusion of one pair of S 5 with one S 3 in between. Columella is compressed and spongy. Living colony is orange or rose red. Distribution Ambon ( van der Horst 1922 ), Japan ( Ogawa and Takahashi 1995 ) and Conic Island marine cave in Hong Kong (this study).