[MATTHEW] FLORA OF THE LITTLE RIVER GROUP NO. II 89 



enough to to find the fruit attached to the peduncles, so, of the intimate 

 relation of the\ fruit and leaf, there can be no question. These small 

 seeds of A. fertilis are flattened and supplied with narrow lateral wings; 

 the fruits are fixed at the slightly thickened ends of naked branches of 

 the rachis, and connect directly with the foliate rachis; there was there- 

 fore no bract that persisted, or foliar protective shield to the fruit, as in 

 our species. 



While Mr. White's species is referred to Aneimites it seems to be 

 placed there rather from resemblance in venation to the modern Anemia 

 (as suggested by Dawson of his genus Aneimites) than from its corre- 

 spondence to the type of Dawson's genus, A. acadica; the peculiar fruit- 

 ing stalk of the latter is almost exactly represented by Schimpei-'s genus 

 Triphyllopteris,! and the vegetative pinnules of this are very closely 

 those of A. acadica Dn. of the Upper Devonian, and A. obtusa Dn. and 

 A. valida Dn. of the flora of the Little Eiver Group. But on Dawson's 

 typical species I have not noticed more than one fruiting branch on a 

 pinna, not two as represented for Triphyllopteris. 



PSILOPHYTON, Dawson. 



This peculiar genus originally described from the Devonian sand- 

 stones of Gaspé in the eastern part of the province of Quebec, has long 

 been considered a typical genus of the Devonian system, and has been 

 recognized in different parts of the world in strata of this age. Sir 

 William Dawson also claims the presence of two species of the genus in 

 the Upper Silurian of Gaspé: that it should occur in the strata of the 

 Little Eiver Group should not cause surprise, though the species de- 

 scribed below the present author claims to be special to this terrane. 



Generic description of Psilophyton, Dawson. 



Lycopodiaceous plants, branching dicJiotomously and covered with 

 interrupted ridges or closely appressed minute leaves; the stems spring- 

 ing from a rhizome, having circular aréoles sending forth cylindrical 

 rootlets. Internal structure, an axis of scaldriform vessels, surrounded 

 by a cylinder of parenchymatose cells and by an outer cortical cylinder 

 of elongated woody cells (prosenchyma). Fructification probably in 

 lateral jnasses protected by leafy bracts.- 



This original description of Sir Wm. Dawson has been modified in 

 accordance with his later discoveries and studies, the changes being em- 

 bodied in his later publications, and condensed by Schimper in Zittel's 



iZittel's Palseont. (Schimp.), p. Ill, fig. 87-2. 

 2 Quart. Jour. Geol. Soc, London, p. 478. 



