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Home > NEMENZO_CORAL_INDEX > CORAL_STYLOPHORA_NANA

Stylophora nana

Stylophora nana

Nemenzo, 1964

Corallum standing around 6 cm high, subhemispherical, about 8 cm across; base small; composed of flattened stems – one 10 x 7 mm at base. Branches non-coalescent, wedge-shaped, not attenuated, their tips flat – one 7 x 3.5 mm; another 12 x 4 mm.

Calicles crowded; 0.8 mm diameter; polygonal on tips of branches, becoming circular below; distinctly hooded in some areas; slightly elevated with thick wall but even with surface in others. Hood not always on upper side; obtuse or acute; in the latter case the highest point is a primary septum; opposite wall obsolete. Rows of spines run down outer surface of wall simulating costae. Hoods and contiguous perithecal areas just below apices of most branchlets marked by distinct ridges, with or without spines.

Primaries very conspicuous, reaching half radius circle, the free edges thickened, granulous, vertical to bottom of fossa where they join columella without producing deep loculi; very exsert, except among basal calicles where they are level with edge of wall. Secondaries occasional, very narrow, seldom forming complete cycle. Some tertiaries very occasionally distinguishable as low ridges against calicinal wall. Septa of uppermost calicles smooth, very narrow at calicinal mouth so that they appear to begin way down below, then expand towards columella; producing deep loculi.

Columella a tall slender sharp spine in upper calicles, granulous and stouter in lower ones.

Intercalicinal areas wider towards base than on upper regions, never wider than calicinal diameter; covered with fine spines, evenly disposed and, in some places, arranged in rows.

Remarks:
This species somewhat resembles Stylophora septata Gardiner as described by Crossland (1952), specially as regards the costae. However, the hood or upper lip of the present specimen is not a constant feature, the columella is prominent, the septa not always in 2 cycles.

Source:
Nemenzo, F. (1964). Systematic studies on Philippine shallow-water scleractinians: V. Suborder Astrocoeniida (Part.). Natural and Applied Science Bulletin, University of the Philippines. 18: 193-223.

Taxonomic status:
Unaccepted

Accepted name:
Stylophora pistillata (Esper, 1792)

Source:
WoRMS Editorial Board. (2024). World Register of Marine Species. Available from https://www.marinespecies.org at VLIZ. Accessed 2024-05-02. doi:10.14284/170

Material:
Plate VI, Fig 1-2: UP C-1023:Bubon, Burgos, Ilocos Norte (E. Galutira) 1960-type

UP C-1024:Bubon, Burgos, Ilocos Norte (E. Galutira) 1960-type

UP C-1025:Bubon, Burgos, Ilocos Norte (E. Galutira) 1960-type

Type specimen location:
Institute of Biology, University of the Philippines, Diliman, Quezon City

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  • Stylophora nana plate01 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate01

  • Stylophora nana plate02 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate02

  • Stylophora nana plate03 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate03

  • Stylophora nana plate04 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate04

  • Stylophora nana plate05 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate05

  • Stylophora nana plate06 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate06

  • Stylophora nana plate07 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate07

  • Stylophora nana plate08 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate08

  • Stylophora nana plate09 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate09

  • Stylophora nana plate10 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate10

  • Stylophora nana plate11 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate11

  • Stylophora nana plate12 by Katrina S. Luzon and Wilfredo Roehl Y. Licuanan

    Stylophora nana plate12

 
 
 

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