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Mallomonas retrorsa, a new species of silica‐scaled Chrysophyceae with backwards orientated scales
Author(s) -
Siver Peter A.
Publication year - 1988
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.1988.tb01726.x
Subject(s) - biology , taxon , bristle , whorl (mollusc) , apical cell , botany , long axis , anatomy , geometry , genus , cell , brush , genetics , electrical engineering , engineering , mathematics
A new species, Mallomonas retrorsa , with a unique siliceous armour, is described from four slightly humic and acidic localities in Connecticut, U.S.A., each low in specific conductance. Cells of the new species have three types of siliceous scales each of which is asymmetric, domeless and arranged with their longitudinal axis parallel to the longitudinal axis of the cell. The scales are positioned such that the posterior rim of each scale faces the apical end of the cell. In addition, the new taxon has an apical whorl of very small, forward projecting paddle‐shaped bristles that emerge from the rimmed ends of the apical scales, and an elongated caudal region.