Helioseris cucullata

(Ellis & Solander, 1786)

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Morphologic Description:

Colony Form: meandroid; Colony Shape: plates, thin, explanate; Colline Characteristics: irregular, acute collines; Series Characteristics: irregular; Budding Type: intramural; Corallite Diameter: 3.0-4.6 mm; Calical Relief: high, may be exsert; Septa Per Corallite: 15-25; Relative Septum Thickness: thin and smooth; Lobes: none; Columella Structure: absent; Columella Development: occasionally weak; Wall Structure: synapticulothecal.