PAI,. PEC.] 



PLANTS. 



131 



gracile, Lesquereux, 1876, 7th Ann. Rep. 

 Geol. Sur. Ind., p. 137, Coal Meas. 

 A incipiens, Billings, 1861, Pal. 

 jffr Foss., vol.1, p. 2, Potsdam Gr. 



k M informe, Wincnell, 1864, Am. 



ftHL Jour. Sci. and Arts, vol. 37, 



^^ p. 232, Potsdam Gr. 



^k ^ irregulare, Hall, 1847, Pal. 



m^ N. Y., vol. 1, p. 8, Calcif. Gr. 



BBS milleri, Lesquereux, 1876, 7th 



Hw Ann. Rep. Geol. Sur. Ind., 



-. p. 136, Coal Meas. 



Palffiophy- obscurum, Billings, 1862, Pal. 

 cusgracile. Foss.,vol. 1, p. 98, Trenton Gr. 



occidentale, Whitfield, 1877, Rep. Pal. 

 Black Hills, p. 7, and Geol. Black Hills, 

 p. 332, Potsdam Gr. 



plumosum. Whitfield, 1878, Ann. Rep. 

 Geo. Sur. Wis., p. 50, and Geo. Wis., 

 vol. 4, p. 169, Potsdam Gr. 



rugosum, Hall, 1847, Pal. N. Y., vol. 1, p. 

 63, Trenton Gr. 



simplex, Hall, 1847, Pal. N. Y., vol. 1, p. 

 63, Trenton Gr. 



striatum, Hall, 1852, Pal. N. Y., vol. 2, p. 

 22, Clinton Gr. 



torruosum, Hall, 1852, Pal. N. Y., vol. 2, 

 p. 6, Medina sandstone. 



tubulare, Hall, 1847, Pal. N. Y., vol. 1, p. 

 7, Calcif. Gr. 



virgatum, Hall, 1847, Pal. N. Y., vol. 1, p. 



263, Hud. Riv. Gr. 



Pal&opteris, Schimper, being preoccupied 

 by Geinitz, see Archseopteris. 



acadica, see Aneimites acadicus. 



liartii, see Archa?opteris hard. 

 Palxoxyris, Brongniart, 1828, Prodr. d. Hist, 

 d. Veg. Foss., p. 137. [Ety. palaios, an- 

 cient; xyris, plant.] An inflorescence. 

 Type P. regularis. The fossils which 

 have been referred to this genus in the 

 American palaeozoic rocks are now re- 

 ferred to Spirangium. 



appendiculata, see Spirangium appendicu- 

 latum. 



corrugata, see Spirangium corrugatuin. 



prendeli, see Spirangium prendeli. 

 Palmacites oculatus, see Sigillaria oculata. 



rueggerathi, see Trigonocarpum ncegge- 



rathi. 



PECOPTERIS, Brongniart, 1822, Class d. Veg. 

 Foss. in Mem. du Mus. d'Hist. Nat. d. 

 Paris, torn. 8, p. 203. [Ety. peko, ,comb ; 

 pteris, fern.] Fronds, bi, tripinnate ; 

 pinnae long, pinnatifid; pinnules ad- 

 hering to the rachis by the whole base, 

 often more or less deeply connate, not 

 decurring; borders generally contigu- 

 ous, or nearly so ; secondary veins de- 

 rived from the medial nerve of the 

 pinnules, simple, bi or trifurcate. Type, 

 P. longifolia is the first species men- 

 tioned in the Prodr. d. Hist. d. Veg. 

 Foss., and the first mentioned in the 

 Coal Flora of Pa. is P. unita, while P. 

 penniformis is a representative species. 



abbreviata, Brongniart, 1828, Hist. d. 

 Veg. Foss., p. 337, and Coal Flora of 

 Pa., p. 248, Coal Meas. 



acuta, Brongniart, 1828, Hist. d. Veg. 

 Foss., p. 350, and Coal Flora of Pa., p. 



241, Coal Meas. 



sequalis, Brongniart, 1828, Prodr. d. Hist. 



d. Veg. Foss., p. 58, Coal Meas. 

 alata, see Sphenopteris alata. 

 alata, Schimper, 1869, Pal. Veg., t. 1, p. 



531, syn. for Pseudopecopteris decur- 



rens 

 angustipinna, Fontaine & White, 1880, 



Perm, or Up Garb. Flora, p. 76, Coal 



Meas. or Permian, 

 angustissima, Sternberg, 1820, Vers. Darst. 



Flor. d. Vorw., p. 18, and Coal Flora of 



Pa., p. 257, Coal Meas. 

 aquilina, see Alethopteris aquilina. 

 arborescens, Schlotheim, 1820, (Filicites 



arborescens,) Petrefaktenkunde, p. 404, 



and Coal Flora of Pa., p. 230, Coal 



Meas. 

 arguta, Sternberg, 1820, Vers. Darst. Flor. 



d. Vorw., p. 19, and Coal Flora of Pa., 



p. 227, Coal Meas. 

 aspera, Brongniart, 1828, Hist. d. Veg. 



Foss., p. 339, and Coal Flora of Pa., p. 



242, Coal Meas. 



aspidioides, Brongniart, 1828, Hist. d. Veg. 



Foss., p. 311, and Coal Flora of Pa., p. 



756, Coal Meas. 

 asplenioides, Fontaine & White, 1880, 



Perm, or Up. Carb. Flora, p. 72, Coal 



Meas. or Permian, 

 bucklandi, Brongniart, 1828, Hist. d. Veg. 



Foss., p. 319, and Coal Flora of Pa., p. 



244, Coal Meas. 



callosa, see Pseudopecopteris callosa. 

 candollana, Brongniart, 1828, Hist. d. Veg. 



Foss, p. 305, Coal Flora of Pa. p. 243, 



Coal Meas. 

 carri, Lesquereux, 1884, Coal Flora of Pa., 



p. 758, Coal Meas. 

 chserophylloides, see Sphenopteris chsero- 



phylloides. 

 cisti, Brongniart, 1828, Hist. d. Veg. Foss., 



p. 330, and Coal Flora of Pa., p. 243 



Coal Meas. 

 clarki, Lesquereux, 1880, Coal Flora of 



Pa., p. 261, Coal Meas. 

 clintoni, Lesquereux, 1880, Coal Flora of 



Pa., p. 251, Coal Meas. 

 condnna, Lesquereux, 1854, Bost. Jour. 



Soc. Nat. Hist., vol. 6, p. 424, and Geo. 



Sur. Pa., vol. 2, p. 867, Coal Meas. But 



the name was preoccupied by Presl in 



1833. 

 crenulata, Brongniart, not American. The 



form sometimes referred to it is Pseudo- 

 pecopteris subcrenulata. 

 cristata, Gutbier, 1843. Gaea von Saeh- 



sen, p. 80, and Coal Flor. of Pa., p. 256, 



Coal Meas. 



cristala, see Sphenopteris cristata. 

 cyathea, Schlotheim, 1820, (Filicites cya- 



theus,) Petrefaktenkunde, p. 403, Coal 



Meas. 



decurrens, see Pseudopecopteris decurrens. 

 decurrens, Dawson, 1862. The name be- 

 ing preoccupied, it was changed to P. 



discrepans. 



