Algae. 1998; 13(1): 69-77.

Morphology and Anatomy of Chorda filum (Linnaeus) Stackhouse (Chordaceae, Phaeophyta) in Korea

Yong-Pil Lee, Yoon-Sik oh

Department of Biology, Cheju National University, Department of Biology, Gyuongsang National University

The morphology and the anatomy of Chorda filum (Linnaeus) Stackhouse have been made with special reference to the plants from Oeyendo. Chujado, and Namhaedo, Korea. The plants are simple, terete, chord-like, tapering toward both ends, and with a small discoid holdfast composed of compact rhizoids. The plant has a meristoderm of single-celled layer, cortex of six-or seven-celled layer, medulla of two-or three-celled layer, and an internal lumen. The meristodermal cells are small. ellipsoid, densely pigmented, and with a rather thinner wall. The cortical cells are long, cylindrical, and have a much thick wall with numerous pits. The medullae are constructed with long hyaline hyphae with inflated tips and immersed in an amorphous and transparent matrix. Most of the surface of a mature plant is covered with the mixture of sporangia and paraphyses. Sporangia and paraphyses are born on meristodermal cells. Paraphyses are short clavate with inflated tips. C. filum occurs in all of the Korean waters.

Keywords : anatomy, Chorda filum, morphology