COttDA*S EXTIKGt FLORA. 123 



and P. Singeri is unknown ; that of P. Cottai is figured and de- 

 scribed in great detail by M. Corda, and agrees most remarkably 

 with that of the recent tree-fern from Van Diemen's Land, already 

 mentioned. 



II. Sphalmopferis. One species: — S. Mougeotii, figured by 

 Brongniart (Hist. Veg. Foss. t. 80) as the stem of Anomopteris Mou- 

 geotii. From the red sandstone of the Vosges. 



III. Chelepteris, Three species: — 1. C. Voltzii; 2. Cmicropeltis; 

 3. C Lesangeana. All of them are figured as species of Caulopteris 

 by Schimper and Mougeot in their monograph of the fossil plants 

 of the Vosges. 



IV. Stemmatopteris. Two species : — 1 . S. peltigera ; 2. S. Cistii. 

 Both described and figured by Brongniart as species of Sigillaria. 



V. Ptychopteris. Two species: — 1. P. macrodiscus {Sigillaria, 

 Brongn.); 2. P. striata^ a new species from Waldenburg, Silesia. 



VI. Caulopteris, Two species : — 1. C.primceva^ Lindl. and Hutt. 

 Foss. Fl. ; 2, C. Phillipsii, L. and H. 



VII. CottcBa. One species: — C. danceoides, Goepp. 



VIII. Zippea. One species : — Z. disticha, from the coal-forma- 

 tion at Wranowitz and Chomle, Bohemia. This is a fossil of a very 

 peculiar appearance, much more remote from any of the recent 

 forms than the rest of those included among the Protopterideae. 

 The leaf-scars are arranged in two vertical rows, on the two opposite 

 sides of the stem, and their vascular markings are extremely con- 

 fused and irregular. In the transverse section the stem exhibits 

 four ligneous bundles, of a curved form, placed opposite to one 

 another in pairs. 



10. Phthoropterides. — Under this name M. Corda brings together 

 several fossils (partly described in Cotta's * Dendrolithen ' as spe- 

 cies of Tubicaulis) which appear to have been portions of the stems 

 of herbaceous Ferns, enveloped by a dense matted mass of roots and 

 leaf-stalks, as we see in Osmunda regalis and other British Ferns. 

 Most of the specimens which have been found, indeed, show only 

 this mass of roots, the stem itself having been broken away. Corda 

 divides his Phthoropterides into four genfera, characterized prin- 

 cipally by the form in which the vessels of the leaf-stalks are ar- 

 ranged : — 



I. Asterochlcena. One species: — A, Cottai (Tubicatdis ramosuSf 

 Cotta Dendrol.). 



11. Zygopteris, One species: — Z.primcsva {Ttibicaulis prima- 

 rius, Cotta.). 



III. SelenochlcBna. Two species: — 1. S.microrhiza {Tubicaulis 

 dubius, Cotta) ; 2. S. Reichii { Tubicaulis solenites, Cotta). 



IV. Tempshja. Four species, all of them new: — 1. Tempshya 

 pulchra^ found among the rolled stones of the Elbe ; 2. T. macro- 

 caula ; 3. T. microrhiza ; 4. T, Schimperi. The localities of the 

 last three species are not certainly known, but it is conjectured that 

 they were found in Bohemia. Scarcely more than a single speci- 

 men of each of the species appears to be known. They consist in 

 every instance of a dense mass of interwoven roots, among which 



