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A NEW SPECIES OF DICTYOSTELIUM FROM HAWAII
Author(s) -
Nelson Nancy,
Olive L. S.,
Stoianovitch Carmen
Publication year - 1967
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1967.tb06929.x
Subject(s) - biology , genus , dictyostelium , botany , stalk , spore , evolutionary biology , biochemistry , horticulture , gene
A new species of Dictyostelium , isolated from a decaying ear of corn in Hawaii, is described. Because of the numerous irregularities in its developmental morphology and general appearance, it is being named D. irregularis. Aggregation is by amoebal streaming, and the aggregation mass commonly segments into several pseudoplasmodia, each of which produces a sorocarp in situ or after migration. During migration stalk material is laid down behind the pseudoplasmodium. The mature sorocarps, which do not exceed 1 mm in height, have very irregular stalks and globular‐to‐elongate sori with elliptical spores that measure 3.5‐7 × 4.8‐9.8μ. Cyst formation was not observed. The new species is of particular interest from the standpoint of its probable primitive position in the genus.