Cnidaria

• Key to Philippine Species of Millepora

  (pfde citm)

  A) M. platyphylla

  B) M. foveolata

  C) M. dichomata

  D) M. exaesa

  E) M. cruzi

  F) M. intricata

  G) M. tenera

  H) M. murrayi

  
• M. platyphylla

  Corallum massive or encrusting, or of erect tall plates usually connected by cross pieces, Surface nodulous/

  Skeleton massive or encrusting, pores in pits, singly or in series of 2 or 3; nodules without pores
• M. foveolata

  Corallum massive or encrusting, or of erect tall plates usually connected by cross pieces, Surface nodulous/

  Skeleton of thick, erect, tall plates; pores in distinct cyclosystems; nodules with pores
• M. dichotoma

  Corallum branching/

  Corallum branching closely reticulate
• M. exaesa

  Corallum branching/

  Corallum branching not reticulate/  

  Branches of corallum short, stout, vertical
• M. cruzi

  Corallum branching/ Corallum branching not reticulate/  Branches of corallum tall, usually slender/ Pores borne on elevation
• M. intricata

  Corallum branching/ Corallum branching not reticulate/  Branches of corallum tall, usually slender/ Pores flush with surface/ Branches subcylindrical, distantly coalescent
• M. tenera

  Corallum branching/ Corallum branching not reticulate/  Branches of corallum tall, usually slender/ Pores flush with surface/ Branches flattened, coalescent or not/ Pores distinct; corallum broad, palmate fronds formed by fusion of neighboring branches; tips of branchlets not parallel
• M. murrayi

  Corallum branching/ Corallum branching not reticulate/  Branches of corallum tall, usually slender/ Pores flush with surface/ Branches flattened, coalescent or not/ Pores indistinct; corallum a crowded mass of flattened but not palmate branches; tips of terminal branchlets tending to be parallel
• Forms of colonial corallum according to the arrangement of corallites:

  A) cerioid

  B) dendroid

  C) hydnophoroid

  D) meandroid

  E) phaceloid

  F) plocoid

  G) thamnasterioid

  H) reptoid

  
• Prismatic corallites closely apperssed and united to each other by their walls

  A) cerioid

  
• Branching with each brance a single corallite

  A) dendroid

  
• Corallites arranged around conical hillocks or monticules (collines)

  A) hydnophoroid

  
• Corallites forming winding series from each other by more or less undercut peritheca

  A) meandroid

  
• Corallites in the form of parallel or subparallel branches forming clumps or tufts, reaching almost the same height

  A) phaceloid

  
• Colony composed of more or less cylindricl corallites with distinct wall, separated bu coenosteum

  A) plocoid

  
• Corallites lacking definite boundaries, the septa confluent

  A) thamnasterioid

  
• Corallites arising from a creeping stolon or expansion from older ones

  A) Reptoid

  
• Body wall of Cnidarians:

  • Epidermis
  • Mesoglea
  • Gastordermis
• 2 different sturctural types:

  • Polyp (sessile, stationary)
  • Medusa (motile, free-swimming)
• 3 parts of the polyp:

  • basal disc
  • oral disc
  • body column
• 2 parts of medusa:

  • Exumbrella (convex)
  • Subumbrella (concave)
• Structural unit of the septum - Sclerodermite
• Arrangement of sclerodermite into vertical series - Traberculae
• Entire skeleton deposited by a single polyp or colony of polyps - Corallum
• Skeleton formed by an individual polyp in colonial forms - Corallite
• Parts of Corallite:

  • Upper open end - calice
  • Depression bounded by the inner edges of the septa; concave deepest in the center - fossa
  • central axial structure usally formed from the inner ends of the sclerosepta, present in fossa - columella