Abstract
M amay , S ergius H. (U. S. Geological Survey, Washington, D. C.) A new bowmanitean fructification from the Pennsylvania of Kansas. Amer. Jour. Bot. 46(7): 530–536. Illus. 1959.—A new sphenophyllaceous fructification, Bowmanites moorei sp. nov., is described on the basis of coal ball petrifactions from the Fleming coal in southeastern Kansas. One of the simplest species of Bowmanites, B. moorei has only 3 sporophylls in a whorl. Each sporophyll has 3 lobes, the median one fertile, the 2 lateral ones sterile. Each fertile lobe subtends 2 sporangia, resulting in 6 sporangia in a whorl. The sporangia are inverted, being distally attached to separate sporangiophores that arise in pairs, in axillary positions. The sporangial epidermis and epidermis of the lower surfaces of the sporangiophores are characterized by relatively large, thick‐walled cells. The spores are small, spherical, and trilete, without distinctive ornamentation of the exine. B. moorei adds to the morphological variation known in Bowmanites , but contributes little toward a phylogenetic interpretation of this morphologically complex genus.
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Claims 8
Claim · model-written summary
The fossil fructification was described as Bowmanites moorei sp. nov.
Verbatim
e0“A new sphenophyllaceous fructification, Bowmanites moorei sp. nov., is described on the basis of coal ball petrifactions from the Fleming coal in southeastern Kansas.”
t0“BOWMANITEAN FRUCTIFICATION”
Claim · model-written summary
B. moorei has three sporophylls per whorl.
Verbatim
e0“B. moorei has only 3 sporophylls in a whorl.”
t0“BOWMANITEAN FRUCTIFICATION”
Claim · model-written summary
Each sporophyll has three lobes, one fertile and two sterile.
Verbatim
e0“Each sporophyll has 3 lobes, the median one fertile, the 2 lateral ones sterile.”
t0“BOWMANITEAN FRUCTIFICATION”
e1“B. moorei has only 3 sporophylls in a whorl.”
Claim · model-written summary
Each fertile lobe subtends two sporangia, giving six per whorl.
Verbatim
e0“Each fertile lobe subtends 2 sporangia, resulting in 6 sporangia in a whorl.”
t0“BOWMANITEAN FRUCTIFICATION”
e1“B. moorei has only 3 sporophylls in a whorl.”
Claim · model-written summary
Sporangia are inverted and attached distally to paired axillary sporangiophores.
Verbatim
e0“The sporangia are inverted, being distally attached to separate sporangiophores that arise in pairs, in axillary positions.”
t0“BOWMANITEAN FRUCTIFICATION”
e1“B. moorei has only 3 sporophylls in a whorl.”
Claim · model-written summary
Sporangial and sporangiophore epidermides have relatively large thick-walled cells.
Verbatim
e0“The sporangial epidermis and epidermis of the lower surfaces of the sporangiophores are characterized by relatively large, thick‐walled cells.”
t0“BOWMANITEAN FRUCTIFICATION”
e1“B. moorei has only 3 sporophylls in a whorl.”
Claim · model-written summary
Spores are small, spherical, trilete and lack distinctive exine ornamentation.
Verbatim
e0“The spores are small, spherical, and trilete, without distinctive ornamentation of the exine.”
t0“BOWMANITEAN FRUCTIFICATION”
e1“B. moorei has only 3 sporophylls in a whorl.”
Claim · model-written summary
The species expands known morphological variation in Bowmanites but contributes little phylogenetic resolution.
Verbatim
e0“B. moorei adds to the morphological variation known in Bowmanites , but contributes little toward a phylogenetic interpretation of this morphologically complex genus.”
t0“BOWMANITEAN FRUCTIFICATION”