. Actes du IIIme Congrès international de botanique, pub. au nom de la commission d'organisation du Congrès. Botany. 28;5 dation in tlie Uppei' and Middle Coal-Measiires of France, between definite species of seeds, and detinite types of Neuropteridean fronds. ((trand' Eury, 1904). Thus tins obsei'vei- is led to refer varions forms of Pacliytesta (including the lai-gest fossil seeds, reacliing tlie size of a lien's egg) to tlie Stepiianian species of Ale- thopteris, and certain seeds of tlie Trigonocarpon type to the Westplialian species of the same frond-genus. Other species of seeds are cons
. Actes du IIIme Congrès international de botanique, pub. au nom de la commission d'organisation du Congrès. Botany. 28;5 dation in tlie Uppei' and Middle Coal-Measiires of France, between definite species of seeds, and detinite types of Neuropteridean fronds. ((trand' Eury, 1904). Thus tins obsei'vei- is led to refer varions forms of Pacliytesta (including the lai-gest fossil seeds, reacliing tlie size of a lien's egg) to tlie Stepiianian species of Ale- thopteris, and certain seeds of tlie Trigonocarpon type to the Westplialian species of the same frond-genus. Other species of seeds are constantly associated with the fronds of Callipteridium, of Odontopteris, of Linopteris (= Dictyopteris) and so on. The évidence is as yet direct and conclusive only in the case of Mr. Kidston's Neuropteris, but considering that in no frond of this group is there any évidence for a Filicinean form of fruc- tification, ail indications point to the Spermo- phytic nature of the entire family Neuropterideae. and thus completely justify the opinion originally expressed by Stur'). There are, however, other extensive groups of Palaeozoic Fern-iike plants in which the évi- dence foi- Sperniophytic aftînities is equally strong. This applies in the first place to a portion of the great genus Sphenopteris. As long ago as 1877 Stur described a form of fructification in the species S. Stangeri, from the Lower Carboniferous beds of Bohemia (Stur 1877). Ovving to the kindness of the Director of the Geologische Reichsanstalt of Vienna, I was ena- bled to examine the original spécimen, and ani thus in a position to confirm Stur's interpréta- tion in every particular. There can be no doubt that the fertile pinnae — Calymmatotheca Stangeri, Stur — belong to the same plant as the végétative foliage of the Sphenopteris with which they are associated. The fructification is represented by calyx-like bodies, each with about 0 lobes, terminating the branches of the fertile rachis. Stur regard
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
