Caulerpa mexicana

Thallus consist of creeping stolons (0.6-1.25 mm diam.) bearing numerous descending delicate rhizoids and erect branches at distance 4-8(-13) mm from each other. Branches dark green, simple or occasionally branched, ending bruptly in a short apex, shortly stalked, feather-like, oblong or broadly lanceolate, dwarf, 1-3 cm high, 4-8(-10) mm broad, with flat midrib, 1-3 mm broad and with pinnules on both sides of the midrib. The pinnules flat, oval to oblong, opposite, densely placed, sometimes overlapping each other, upcurved, slightly constricted at base, 0.5 mm broad, to 2.6 mm long, with apiculate tips. Rhizoids branched, slender. Growing on stones, dead coral blocks at low intertiadal to subtidal (10-15 m).

Note: The alga is used in folk medicine.

Subtropical and tropical waters of Atlantic, Indian and Pacific Oceans.