This species, from the Permian of France, was placed by Renault in _Cycadospadix_[400], but having regard to the fact that it differs essentially in habit from Mesozoic examples of that genus the provisional name _Strobilites_[401] is suggested. The type-specimens are long and narrow spikes or loose strobili, 8–16 cm. long and 2–2·6 cm. broad; a stout axis bears spirally disposed bracts 8–10 mm. long attached by a slender decurrent pedicel expanded distally into a fan-shaped laciniate lamina with a convex upper face, and there are said to be two seeds attached to the sides of each pedicel (fig. 434). The oval seeds appear to be platyspermic and resemble _Samaropsis fluitans_ Daws. Two of the strobili figured by Renault are attached at right angles to a second axis, a habit suggesting comparison with that of a large compound frond. Renault is inclined to regard these fertile shoots as cycadean and suggests a possible connexion with the Permian stems _Ptychoxylon_ or _Poroxylon_, both of which are known to have produced fairly numerous branches. In habit the spikes are similar to some of the longer examples of _Cordaianthus_, but their preservation is not sufficiently good to afford accurate information as to the relation of seed to sporophyll. _Strobilites Milleryensis_ is, perhaps, more likely to be the fertile branch of a compound frond of a Pteridosperm, and it is significant that the seeds have been found in association with _Callipteris_ leaves. =COLPOXYLON=. Brongniart.