Abstract
Conran, J. G. 1988. Embryology and possible relationships of Petermannia cirrosa (Petermanniaceae). ‐ Nord. J. Bot. 8: 13–17. Copenhagen. ISSN 0107–055X. Micro‐ and megasporogenesis in Petermannia cirrosa is reported and the relationships of the Petermanniaceae are discussed. Microsporogenesis is successive; the endothecium is spirally thickened and the tapetum binucleate and amoeboid. The ovules are anatropous and crassinucellate. A primary parietal cell is formed and divides. Megasporogenesis is of the Polygonum type. On the basis of these and other characters, the Petermanniaceae show affinities with the remainder of the Dioscoreales, and also with the Geitonoplesiaceae (Asparagales) but remain somewhat isolated.
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Claims 6
Claim · model-written summary
Microsporogenesis in Petermannia cirrosa is successive.
- Taxon
- Petermannia cirrosa
Petermannia cirrosat0 - Outcome
- Microsporogenesis is successivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microsporogenesis is successive”
t0“Petermannia cirrosa”
Claim · model-written summary
The endothecium is spirally thickened and the tapetum is binucleate and amoeboid.
- Taxon
- Petermannia cirrosaPetermannia cirrosat0
- Outcome
- the endothecium is spirally thickened and the tapetum binucleate and amoeboide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the endothecium is spirally thickened and the tapetum binucleate and amoeboid”
t0“Petermannia cirrosa”
Claim · model-written summary
Ovules are anatropous and crassinucellate.
- Taxon
- Petermannia cirrosaPetermannia cirrosat0
- Outcome
- The ovules are anatropous and crassinucellatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ovules are anatropous and crassinucellate”
t0“Petermannia cirrosa”
Claim · model-written summary
A primary parietal cell forms and divides.
- Taxon
- Petermannia cirrosaPetermannia cirrosat0
- Outcome
- A primary parietal cell is formed and dividese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A primary parietal cell is formed and divides”
t0“Petermannia cirrosa”
Claim · model-written summary
Megasporogenesis is of the Polygonum type.
- Taxon
- Petermannia cirrosaPetermannia cirrosat0
- Outcome
- Megasporogenesis is of the Polygonum typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Megasporogenesis is of the Polygonum type”
t0“Petermannia cirrosa”
Claim · model-written summary
Petermanniaceae shows affinities with Dioscoreales and Geitonoplesiaceae but remains somewhat isolated.
- Taxon
- Petermannia cirrosaPetermannia cirrosat0
- Outcome
- the Petermanniaceae show affinities with the remainder of the Dioscoreales, and also with the Geitonoplesiaceae (Asparagales) but remain somewhat isolatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Petermanniaceae show affinities with the remainder of the Dioscoreales, and also with the Geitonoplesiaceae (Asparagales) but remain somewhat isolated”
t0“Petermannia cirrosa”