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DescriptionHalcampa chrysanthellum has a long, slender column up to 5 cm long and 5 mm diameter. The column can be white, buff, pink or yellow and is longitudinally striped. Halcampa chrysanthellum has 12 short tentacles. The oral disc is small and usually patterned in various shades of brown on a white, yellowish or cream background. Sometimes the pattern is lacking or present only on the tentacles whilst the disc is plain white, brown or yellow.