NEM. NEU.] 



PLANTS. 



127 



protuberans, Lesquereux, 1866, Geo. Sur. 



111., vol. 2, p. 458, Kaskaskia Gr. 

 Nematophycus, Carruthers, 1872, Month. 



Micro. Jour. Syn. for Prototaxites. 

 logani, see Prototaxites logani. 

 NEMATOPHYLLUM, Fontaine & White, 1880, 

 Perm, or Up. Carb. Flora, p. 35. [Ety. 

 nema, thread; phyllon, leaf.] Stem cov- 

 ered with a thick, very finely striate 

 epidermis, internodes remote, swollen ; 

 leaves verticillate, numerous, very long 

 and thread-like, of equal width through- 

 out, finely striate, without nerves, 

 united at the base in a narrow annular 

 band. Type N. angustum. 

 angustum, Fontaine & White, 1880, 

 Perm, or Up. Carb. Flora, p. 35, Coal 

 Meas. or Permian. 



NEMATOXYLON, Dawson, 1863, Quar. Jour. 

 Geo. Soc , vol. 19, p. 466. [Ety. nema, 

 a thread ; xylon, wood.] Carruthers, 

 Penhallow, and others say this genus 

 belongs to the Algse, and is a syn. for 

 Nematophycus. Fragments of wood, 

 with a smooth bark and a tissue wholly 

 composed of elongated cylindrical cells, 

 with irregular pores or markings ; no 

 pith, medullary rays or 

 rings of growth. Type N. 

 crassum. 



crassum, Dawson, 1863, Quar. 

 J>ur. Geo. Soc., vol. 19, p. 



466, Devonian. 



tenue, Dawson, 1863, Quar. 

 Jour. Geo. Soc., vol. 19, p. 



467, Devonian. 

 Nephropteris, Brongniart, 1828, 



Tab. des gener. 



elegans, see Cyclopteris ele- I 

 gans. 



fimbriata, see Neuropteris 

 fimbriata. 



germari, see Cyclopteris ger- 

 mari. 



hirsuta, see Cyclopteris hirsute. 



laciniata, see Cyclopteris la- 

 ciniata. 



orbicularis, see Cyclopteris 

 orbicularis. 



trichomanoides, see Cyclopteris 

 trichomanoides. 



undans, see Cyclopteris un- 



dans. 



NERIOPTERIS, Newberry, 1873, 

 Ohio Pal., vol. 1, p. 378. 

 [Ety. nerion, the oleander; 

 pteris, a fern.] Frond pin- 

 nate or bipinnate; rachis 

 strong, punctate; pinnules 

 lanceolate, simple, entire ; 

 medial nerve strong, ex- 

 tending from base to sum- 

 mit; secondary nerves given 

 off at an acute angle, nu- 

 merous simple or forked at 

 base, parallel, equal; fructifications 

 marginal. Type N. lanceolate, 

 lanceolata, Newberry, 1873, Ohio Pal., vol. 

 1, p. 381, Coal Meas. 



FIG. 53. Ne- 



riopteris 

 lauceolata. 

 Single pin- 

 nule. 



NEUROPTERIS, Brongniart, 1822, Mem. du 

 Mus. d'Hist. Nat. de Paris, t. 8, p. 203, 

 and Prodr. d. Hist. d. Veg. Foss, p. 52. 

 [Ety. neuron, nerve ; pteris, fern.] Fronds 

 simple, bi, tri-pinnate ; pinnules vary- 

 ing from round to ovate, obtuse, or 

 obtusely acuminate, mostly entire, 

 rounded, cordate, or auricled at the 

 base, attached to the rachis by the mid- 

 dle ; sessile, or rarely short pediceled ; 

 veins either from the base of the pin- 

 nules or from a costa, diverging fan- 

 like and arched backward, in passing 

 toward the borders, many times dichot- 

 omous ; costa generally dissolved at or 

 below the middle; basilar veins simple 

 or in fascicles. Type N. acuminata. 



acuminata, Sohlotheim, 1820, (Filicites 

 acuminatus,) Petrefactenkunde, p. 412, 

 and Coat Flora of Pa., p. 123, Coal 

 Meas. 



acutifolia, Brongniart, 1828, Hist. d. Veg. 

 Foss., p. 229, Coal Meas. 



adianiites, see Lescuro pteris adiantites. 



agassizi, Lesquereux, 1880, Coal Flora of 

 Pa., p. 117, Coal Meas. 



angustifolia, Brongniart, 1828, Hist. d. 

 Veg. Foss., p. 231, and Coal Flora of 

 Pa., p. 89, Coal Meas. 



anomala, Lesquereux, 1880, Coal Flora of 

 Pa., p. 118, Coal Meas. 



aspera, Lesquereux, 1880, Coal Flora of 

 Pa., p. 121, Coal Meas. 



attenuata, Lindley & Button, 1837, Foss. 

 Flora, vol. 3, p. 65, Coal Meas. 



auriculata, Brongniart, 1828, Hist. d. Veg. 

 Foss., p. 236, Coal Meas. 



biformis, Lesquereux, 1880, Coal Flora of 

 Pa., p. 121, Coal Meas. 



blissi, Lesquereux, 1884, Coal Flora of 

 Pa., p. 737, Coal Meas. 



callosa, Lesquereux, 1880, Coal Flora of 

 Pa., p. 115, Coal Meas. 



capitata, Lesquereux, 1870, Geo. Sur. 111., 

 vol. 4, p. 383, Coal Meas. 



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

 p. 731, Coal Meas. 



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

 p. 238, Coal Meas. 



clarksoni, Lesquereux, 1858, Geo. Sur. 

 Pa., vol. 2, p. 857, Coal Meas. 



collinsi, Lesquereux, 1870, Geo. Sur. 111., 

 vol. 4, p. 382, Coal Meas. 



cordate, Brongniart, 1828, Hist. Veg. Foss., 

 p. 229, and Coal Flora of Pa., p. 91, 

 Coal Meas. 



cordato-ovata, see Pseudopecopteris cor- 

 dato-ovata. 



coriacea, Lesquereux, 1870, Geo. Sur. 111., 

 vol. 4, p. 387, Coal Meas. 



crassa, Dawson, 1868, Acad. Geol., p. 551, 

 Devonian. 



crenulata. Brongniart, 1828, Hist. Veg. 

 Foss., p. 234, and Coal Flora of Pa., p. 

 116, Coal Meas. 



cyclopteroides, Dawson, 1863, Can. Nat. 

 and Geol., vol. 8, and Acad. Geol. p. 

 482, Coal Meas. 

 dawsoni, see Megalopteris dawsoni. 



