. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. MARINE OF BEAUFORT, N. C. 489 Genus 3. Chrysymenia J. Agardh. Chrysymenja, J. Agardh, 1842, p. 105. Frond terete or somewhat flattened, hollow in parts or throughout the entire length, sometimes segmented by constrictions, variously branched, sometimes caulescent and almost solid below with hollow, vesicular, bladderlike lateral branches above; filled with loose jelly; structure cellular, central axis lacking, inner cells large, outer ones smaller, cortical ones minute, scattered filaments sometimes traversing the internal t
. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. MARINE OF BEAUFORT, N. C. 489 Genus 3. Chrysymenia J. Agardh. Chrysymenja, J. Agardh, 1842, p. 105. Frond terete or somewhat flattened, hollow in parts or throughout the entire length, sometimes segmented by constrictions, variously branched, sometimes caulescent and almost solid below with hollow, vesicular, bladderlike lateral branches above; filled with loose jelly; structure cellular, central axis lacking, inner cells large, outer ones smaller, cortical ones minute, scattered filaments sometimes traversing the internal tube; tetra- Sporangia scattered over the thallus surface, embedded among the cortical cells, cru-. Fig. 31.—McTtstotkeca duckassain^ii, showing tetrasporangia and internal structure (diagrammatic) X 30. Fig. 32.—Mcristotheca duchassaingti, showing internal struc- ture and tetrasporangium, X 1S3. Fig. 33.—Agardhinuta brownecE, structure of thallus and cystocarp. X 30. Fig. 34.—Chrysynunia agardhii, cross section of thallus, X 1S3, Fig- 35.—Nttophyllum medium (type), surfaK:e view show- ing veins and cells, X 33. ciately divided; cystocarps scattered over the frond, fairly conspicuous, hemispherical, opening by an apical pore, fruiting cavity with a trace of a filamentous network or entirely lacking this, gonimoblast arising from the base of the 'cavity, composed of several coalescent lobes, bearing many rotund carpospores irregularly grouped in masses, somewhat inclosed by a gelatinous covering. Fifteen to twenty species in warm seas. Some of the species of this genus resemble in external appearance species of Halymenia, from which they may usually be distin- guished by their structure. In the species of Chrysymenia the frond is hollow or nearly so, the wall consisting of one or two loose layers of large cells surrounded by one or two layers of small cortical cells; there are usually no filaments traversing the cavity. In. Please note that these images are extracted fr
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