Acropora dendrum (Bassett-Smith, 1890)

(Fig. 21)

Madrepora dendrum Bassett-Smith, 1890: 452 .

Type locality. Macclesfield Banks, China Sea (lectotype NHM).

MTQ Holdings. Thailand: G52642, G55998; Australia: G27268–70, G27272–73, G27275–78, G27380, G27382 Great Barrier Reef; Philippines: G41560; Papua New Guinea: G53316; New Caledonia: G40880. Chesterfield Atoll: G27274.

Species group: selago.

Description. Colony outline: determinate, predominantly corymbose. Branches: tertiary branching order absent; length: 2 5–50 mm; diameter: 5.0–9.9 mm, axial-dominated, terete;

radial crowding: not touching; axial/radial ratio:>1:10. Axial corallites: two synapticular rings; porous; outer diameter 1.4–2.2 mm; inner diameter 0.5–1.2 mm; primary septa to ¾ R. Radial corallites: medium; two synapticular rings; one size or graded; inner wall not developed; shape: dimidiate/lipped; openings: cochleariform; primary septa to 2/3 R. Coenosteum: same on and between radials: reticulate; spinule shape: laterally flattened.

Further literature. Nishihira & Veron (1995), Wallace (1999), Veron (2000), Turak & DeVantier (2011).