Ganonema vermiculare sp. nov. (Liagoraceae, Rhodophyta), a new species from Puerto Rico, Caribbean Sea
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Abstract
A new species of Ganonema, G. vermiculare, is described based on specimens collected from 11–17 m depths in southwestern Puerto Rico. When living, algae appear chalky white with a maroon margin. The new species is not distinguished by any autapomorphies, but is distinct from its 13 congeners by a combination of characters, foremost of which are the ovoid cells of the assimilatory filaments and the hollow cylinder of calcification located at the outer medulla. Assimilatory filaments extend to 300 μm beyond the ring of calcification. Cells of the cortical fascicles cut off abundant rhizoidal filaments, which grow back into the medulla, where they intersperse with and lie parallel to the longitudinally oriented medullary filaments. Carpogonial branches are mostly four cells in length, originate on proximal cells of the cortical fascicles, and become conspicuously surrounded by sterile filaments following fertilization. Carposporophytes are compact, measuring from 150 to 220 μm in diameter.
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Articles in the same Issue
- Sulfur cycling and sulfide intrusion in mixed Southeast Asian tropical seagrass meadows
- Variability of Ruppia cirrhosa in two coastal lagoons with differing anthropogenic stresses
- A re-evaluation of the taxonomic status of Halophila euphlebia Makino (Hydrocharitaceae) based on morphological features and ITS sequence data
- Ganonema vermiculare sp. nov. (Liagoraceae, Rhodophyta), a new species from Puerto Rico, Caribbean Sea
- Antithamnionella multiglandulosa sp. nov. (Rhodophyta, Ceramiaceae) from the Atlantic Iberian Peninsula
- Changes in the benthic algal flora of Linosa Island (Straits of Sicily, Mediterranean Sea)
- Seasonal and spatial dynamics of Noctiluca scintillans in a semi-enclosed bay in the northeastern part of Hong Kong
- Taxonomic appraisal of Melosira arctica Dickie and description of a new variety (Bacillariophyta)
- Changes in growth, chlorophyll fluorescence and fatty acid composition with culture age in batch cultures of Phaeodactylum tricornutum and Chaetoceros muelleri (Bacillariophyceae)
- Purification and some properties of a d-fructose-1,6-bisphosphate aldolase from the red alga, Gracilaria chorda Holmes
- Biomass and docosahexaenoic acid formation by Schizochytrium mangrovei Sk-02 at low salt concentrations
