114 



PLANTS. 



[CHO. COR. 



CHONDRITES, Sternberg, 1833, Vers. Darst. 

 Flora der Vorwelt, p. 25. [Ety. from 

 its resemblance to Chonarus crispus, or 

 Irish moss.] Fronds cartilaginous, fili- 

 form or robust stems, dichotomous, 

 branchy ; rounded or 

 Type C. antiquus. 



antiquus, Brongniart, 1828, (Fncoides an- 

 tiquus,) Hist. d. Veg. Foss., vol. 1, p. 63, 

 Devonian. 



colletti, see Taonurus colletti. 



targioni, Brongniart, 1828, (Fucoides 

 targioni,) Hist. d. Veg. Voss., t. 1, p. 

 56, Coal Meas. 



CONOSTICHUS, Lesquereux, 1876, 7th Ann. 

 Rep. Geo. Sur. Ind.,p. 142. [Ety. konos, 

 cone ; sticfws, row.] Stipe cylindrical, 

 continuous; frond enlarging from the 

 base upward in the shape of a plate, 

 or of a cup, or increasing by successive 

 superposed layers or concent rical lam- 

 inae; top concave, cup-shaped. Type 

 C. ornatus. 



broadheadi, Lesquereux, 1880, Coal Flora 

 of Pa., p. 15. Coal Meas. 



ornatus, Les- 



?u e r e u x, 

 876, 7th 

 Ann. Rep. 

 Geo. Sur. 

 Tnd.,p.l42, 

 Coal Meas. 

 prolifer, Les- 

 quereux, 

 1880, Coal 

 Flora of 

 Pa., p. 16, 

 Coal Meas. 



CORDAIANTHUS, 



Grand 'Eu- 

 ry, 1877, 

 Flore Car- 



bonifere, p. 228. [Ety. Cordaites, a 



genus ; anthos, flower.] Flowers and 



fruits of Cordaites, found isolated or 



in fragments where their relation to 



stem-bearing leaves is unknown. A 



provisional name only. Type C. gem- 



mifer. 

 bracteatus, Lesquereux, 1870, (Schultzia 



bracteata,) Geo. Sur. 111., vol. 4, p. 427, 



Coal Meas. 

 dichotomus, Lesquereux, 1880, Coal Flora 



of Pa., p. 546, Coal Meas. 

 ebracteatus, Lesquereux, 1884, Coal Flora 



of Pa., p. 844, Coal Meas. 

 flexuosus, Lesquereux, 1884, Coal Flora 



of Pa., p. 802, Coal Meas. 

 gemmifer, Grand 'Eury, 1877, Flore Car- 



bonifere, p. 228, and Coal Flora of Pa., 



p. 545, Coal Meas. 

 ovatus, Lesquereux, 1880, Coal Flora of 



Pa., p. 545, Coal Meas. 

 rugosus, Lesquereux, 1884, Coal Flora of 



Pa., p. 803, Coal Meas. 

 scaber, Lesquereux, 1884, Coal Flora of 



Pa., p. 844, Coal Meas. 

 simplex, Lesquereux, 1880, Coal Flora of 



Pa., p. 538, Coal Meas. 



FIG. 25. Conostichus ornatus. 



spicatus, Lesquereux, 1884, Coal Flora of 



Pa., p. 802, Coal Meas. 



CORDAICARPUS, Grand 'Eury, 1877, Flore 

 Carbonifere, p. 236. [Ety. Cordaites, 

 a genus ; karpos, fruit.] Seeds of vari- 

 able size and shape. Type C. ovatus. 



apiculatus, Lesquereux, 1880, 

 Coal Flora of Pa., p. 551, 

 Coal Meas. 



cinctus, Lesquereux, 1884, 

 Coal Flora of Pa., p. 804, 

 Coal Meas. 



costatus, Lesquereux, 1880, F 26 

 (Cordaites costatus,) Coal cordaicarpus 

 Flora of Pa., p. 540, Coal apiculatus. 



gutbieri, Grand 'Eury, 1877, Flore Car- 

 bonifere, p. 236, Coal Meas. 



lineatus, Lesquereux, 1884, Coal Flora of 

 Pa., p. 805. Coal Mea?. 



ovatus, Grand 'Eury, 1877, Flore Carbon- 

 ifere, p. 236, and Coal Flora of Pa., p. 

 550, Coal Meas. 



stabilis, Lesquereux, 1884, Coal Flora of 



Pa., p. 805, Coal Meas. 

 CORDAISTROBUS, Lesquereux, 1880, Coal 

 Flora of Pa., p. 551. [Ety. Cordaites, 

 a genus ; strobus, cone.] Strobile cylin- 

 drical, tapering to a blunt acumen, 

 covered by transversely rhomboidal 

 scars placed in spiral, bearing narrow, 

 linear leaves, with the characters, form, 

 and nervation of leaves of Cordaites. 

 Type C. grandeuryi. 



grandeuryi, Lesquereux, 1880, Coal Flora 



of Pa., p. 552, Coal Meas. 

 CORDAITES, linger, 1850, Gen. et sp., p. 277. 

 [Ety. proper name.] Trunks of large 

 size, irregularly branching, formed of 

 a large medullar canal or pith ; marked 

 on the outer surface by transverse, 

 narrow, parallel, simple ribs, rarely 

 joined by divisions, covered by double 

 or triple layers of wood and bark, con- 

 verted bv fossilization into thin layers 

 of coal ; leaves in spiral order, more or 

 less distant, ribbon-like, of various 

 length and width, linear, or more 

 generally gradually enlarging upward, 

 obtuse, entire or undulate, and split 

 at the apex ; borders curving to the 

 sessile, or semi-embracing, somewhat 

 inflated base; surface marked length- 

 wise by primary and secondary par- 

 allel simple nerves, generally more dis- 

 tant in the middle of the leaves, and 

 slightly inflated toward the base; flow- 

 ers in racemes from the axils of the 

 leaves ; fruits generally oval, sessile, of 

 various size. Type C. borassifolius. 



angustifolius, Dawson, 1861, Can. Nat., 

 vol. 6, p. 10, Ham. Gr. 



angustifolius, Lesquereux, see C. diver- 

 sifolius. 



borassifolius, Sternberg, 1820, (Flabellaria 

 borassi folia,) Essaid. Exp. Geogn-botan. 

 d. 1. Flora d. monde primitif, 2d Cahier., 



&36, and Coal Flora of Pa., p. 532, Coal 

 eas. 



