2 Systematic Descriptions
87
Remarks and comparison: P. goraiensis is distinguished by the very thin, almost
hyaline nexine, and sacci being smaller than corpus; taeniae wide and finely
structured.
Genus Striatoabietites (Sedova 1956; Hart 1964).
Diagnosis: Disaccate striatiti. Diploxylonoid. Sacci significantly smaller than
corpus. Corpus circular to sub-circular in lateral elongation. Cappa striated.
Striae bordering on numerous narrow taeniae. Cappula wide. Structure of sacci
intra-punctate to intra-verrucate.
Known distribution: Permian of the Northern and Southern hemispheres.
Discussion: Striatoabietites as emended by (Hart 1964) could include forms
with rudimentary sacci such as Striatoabietites multistriatus Balme and (Hennelly 1955) and Vittatina hiltonensis Chaloner and Clark (1962). Thuringisaccus
(Madler 1964) from the Triassic of Germany closely resembles Striatoabietites
and could probably be treated as its synonym.
Striatoabietites was recorded and described by Backhouse (1991) from the Collie
Basin, and from the Permian of Eastern India (Banerjee and D’Rozario 1990).
Striatoabietites multistriatus (Balme and Hennelly) (Hart 1964) (Fig. 2.62).
Occurrence: Sakmarian to Upper Permian of Collie–Basin. Artinskian to Upper
Permian of Muja sub-Basin and Alexandra Bridge bore.
Description: Sub-saccate striatiti. Diploxylonoid or haploxylonoid. More commonly diploxylonoid. Sacci always distinctly smaller than corpus; often only ¼
corpus size. Corpus sub-circular to oval in lateral elongation. Cappa striated; striae
consists of narrow taeniae, numbering 12–20, about 2 µ wide. Ektexine attached
equatorially to slightly sub-equatorially on proximal face and sub-equatorially on
distal face to form sub-sacci. Structure of attached as well as detached ektexine is
intra-punctate to intra-granulate. Nexine usually thicker than ektexine, tending to
fold under distal roots. Cappula relatively wide, from 1/3 to 2/3 of corpus width.
Dimensions: Total width: 45–65 µ; corpus: 30–45 µ (18 specimens measured).
Remarks and comparison: Striatoabietites multistriatus is distinguished by its
numerous proximal taeniae/striae ad its pseudo-sacci which are devoid of recognisable structure. The species was recorded from Collie Basin by Backhouse
(1991).
Genus Vittatina Luber ex (Wilson 1962).
Diagnosis: Asaccate striatiti. Bilaterally symmetrical. Proximal face taeniate; taeniae parallel to the long axis of the grain. Distal face smooth or possessing taeniae
perpendicular to the long axis of the grain. Distal tenuitas analogues to the cappula
in saccate pollen and is a characteristic feature.
Known distribution: Permian of Northern and Southern hemispheres.
Discussion: Vittatina was first described by Luber (1940, unpublished
manuscript). Samoilovich (1953) described Vittatina forms, but he did not name
a type species. Wilson (1962) designated Vittatina subsaccata as type species.
Striatolubrae was erected by Hart (1962) and was later placed by him in synonymy
with Vittatina.
87
Remarks and comparison: P. goraiensis is distinguished by the very thin, almost
hyaline nexine, and sacci being smaller than corpus; taeniae wide and finely
structured.
Genus Striatoabietites (Sedova 1956; Hart 1964).
Diagnosis: Disaccate striatiti. Diploxylonoid. Sacci significantly smaller than
corpus. Corpus circular to sub-circular in lateral elongation. Cappa striated.
Striae bordering on numerous narrow taeniae. Cappula wide. Structure of sacci
intra-punctate to intra-verrucate.
Known distribution: Permian of the Northern and Southern hemispheres.
Discussion: Striatoabietites as emended by (Hart 1964) could include forms
with rudimentary sacci such as Striatoabietites multistriatus Balme and (Hennelly 1955) and Vittatina hiltonensis Chaloner and Clark (1962). Thuringisaccus
(Madler 1964) from the Triassic of Germany closely resembles Striatoabietites
and could probably be treated as its synonym.
Striatoabietites was recorded and described by Backhouse (1991) from the Collie
Basin, and from the Permian of Eastern India (Banerjee and D’Rozario 1990).
Striatoabietites multistriatus (Balme and Hennelly) (Hart 1964) (Fig. 2.62).
Occurrence: Sakmarian to Upper Permian of Collie–Basin. Artinskian to Upper
Permian of Muja sub-Basin and Alexandra Bridge bore.
Description: Sub-saccate striatiti. Diploxylonoid or haploxylonoid. More commonly diploxylonoid. Sacci always distinctly smaller than corpus; often only ¼
corpus size. Corpus sub-circular to oval in lateral elongation. Cappa striated; striae
consists of narrow taeniae, numbering 12–20, about 2 µ wide. Ektexine attached
equatorially to slightly sub-equatorially on proximal face and sub-equatorially on
distal face to form sub-sacci. Structure of attached as well as detached ektexine is
intra-punctate to intra-granulate. Nexine usually thicker than ektexine, tending to
fold under distal roots. Cappula relatively wide, from 1/3 to 2/3 of corpus width.
Dimensions: Total width: 45–65 µ; corpus: 30–45 µ (18 specimens measured).
Remarks and comparison: Striatoabietites multistriatus is distinguished by its
numerous proximal taeniae/striae ad its pseudo-sacci which are devoid of recognisable structure. The species was recorded from Collie Basin by Backhouse
(1991).
Genus Vittatina Luber ex (Wilson 1962).
Diagnosis: Asaccate striatiti. Bilaterally symmetrical. Proximal face taeniate; taeniae parallel to the long axis of the grain. Distal face smooth or possessing taeniae
perpendicular to the long axis of the grain. Distal tenuitas analogues to the cappula
in saccate pollen and is a characteristic feature.
Known distribution: Permian of Northern and Southern hemispheres.
Discussion: Vittatina was first described by Luber (1940, unpublished
manuscript). Samoilovich (1953) described Vittatina forms, but he did not name
a type species. Wilson (1962) designated Vittatina subsaccata as type species.
Striatolubrae was erected by Hart (1962) and was later placed by him in synonymy
with Vittatina.