138 



PLANTS. 



[RHI. SCH. 



fucoideum, Lesquereux, 1880, Coal Flora 



of Pa., p. 325, Coal Meas. 

 humulosum, Lesquereux, 1880, Coal Flora 



of Pa., p. 321, Coal Meas. 

 hirsutum, Lesquereux, 1858, (Pachyphyl- 



lum hirsutum,) Geo. Sur. Pa., vol. 2, p. 



863, Coal Meas. 

 infiatum, Lesquereux, 1870, (Hymeno- 



phyllites inflatus,) Geo. Sur. 111., vol. 4, 



p. 414, Coal Meas. 

 irregulare, Germar, 1844, (Aphlebia irreg- 



ularis,) Verst. d. Steink. v. Wettin u. 



Lobejiin, p. 57, and Coal Flora of Pa., 



p. 326, Coal Meas. 

 laceratum, Lesquereux, 1858, (Pachyphyl- 



lum laceratum,) Geo. Sur. Pa., vol. 2, 



p. 863, Coal Meas.' 

 laciniatuin, Fontaine & White, 1880, Perm. 



or Up. Carb. Flora^ p. 94, Coal Meas. or 



Permian. 



FIG. 69. Rhacophyllum lactuca. 



lactuca, Sternberg, 1833, (Schizopteris lac- 

 tuca,) Flor. d. Vorw. vol. 2, p. 112, and 



Coal Flora of Pa., p. 315, Coal Meas. 

 membranaceum, Lesquereux, 1880, Coal 



Flora of Pa., p. 312, Coal Meas. 

 molle, Lesquereux, 1870, (Hymenophyl- 



lites mollis,) Geo. Sur. 111., vol. 4, p. 418, 



Coal Meas. 

 scolopendrites, Lesquereux, 1858, (Scolo- 



pendrites dentatus,) Geo. Sur. Pa., vol. 



2, p. 868, Coal Meas. 

 spinosum, Lesquereux, 1880, Coal Flora 



of Pa., p. 320, Coal Meas. 

 strongi, Lesquereux, 1870, (Hymenophyl- 



lites strongi,) Geo. Sur. 111., vol. 4, p. 



417, Coal Meas. 

 thalliforme, Lesquereux, 1870, (Hymen- 



ophyllites tballiformis,) Geo. Sur. 111., 



vol. 4, p. 417, Coal Meas. 

 trichoideum, Lesquereux, 1880, Coal Flora 



of Pa., p. 322, Coal Meas. 

 truncatum, Lesquereux, 1880, Coal Flora 



of Pa., p. 311, Coal Meas. 

 Rhizolithes, F. Braun, 1847, in Flora, etc. 



[Ely. rhiza, root ; lithos, stone.] 

 palmatifidus, see Pinnularia palmatifidus. 

 Rhizomopteris, Scbimper, 1869,. Trait6 de 



Paleontologie Vegetale, vol. 1, p. 699. 



[Sig. the rhizornas of ferns.] This genus, 



rs the name indicates, comprehends the 



rhizomas of ferns. Type, R. lycopo- 

 dioides. Some of the species of Lyco- 

 dites as L. uncinatus have been re- 

 ferred to it. 



RHIZOMORPHA, Roth, as identified by Les- 

 quereux, Coal Flora of Pa., p. 3. [Ety. 

 rhiza, root ; morpha, form.] Fungous 

 filaments of hard substance, disposed in 

 branches abnormally divided, and often 

 anastomosing; generally living under 

 the decaying bark of trees, 

 sigillarise, Lesquereux, 1877, Proc. Am. 

 Phil. Soc., p. 174, and Coal Flora of Pa., 

 p. 3, Coal Meas. 



Rotularia longifolia, see Sphenophyllum lon- 

 gifolium. 



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

 p. 23. [Ety. rusos, rugose ; phykos, sea- 

 plant.] Simple or branched stems, 

 transversely wrinkled, and often pos- 

 sessing a central longitudinal depres- 

 sion. Type R. clavatum. 

 asperum, Miller & Dyer, 1878, Jour. Gin. 

 Soc. Nat. Hist., vol. 1., p. 25, Utica 

 Slate. 



bilobatu m , Van uxem , 

 1842, (Fucoides bi- 

 lobatus,) Geo. Rep. 

 N. Y., p. 79, Hud. 

 Riv. and Clinton, 

 Gr. 



clavatum, Hall, 1852, 

 . Pal. N. Y., vol. 2, 



p. 23, Clinton Gr. 

 grenvillense, B i 1 - 

 lings, 1862, Pal. 

 Foss., vol. 1, p. 101, 

 Chazy Gr. 



pudicum, Hall, 1852, 

 Pal. N. Y., vol. 2, 

 p. 24, Hud. Riv. and 

 Clinton Gr. 

 subangulatum, Hall, 

 1852, Pal. NY 

 vol. 2, p. 23, Clm- bilobatum. 

 ton Gr. 



Sagenaria veltheimiona, see Lepidodendron 

 veltheimianum. 



SAPORT.EA, Fontaine & White, 1880, Perm, 

 or Up. Carb. Flora, p. 99. [Ety. proper 

 name.] Leaves simple, subreniform, 

 iiabellate or suborbicular, cuneate, bor- 

 dered at the base with a woody rim, 

 terminal margin incised ; petiole long, 

 slender, and grooved on the upper sur- 

 face ; nerves parting tiabellately from 

 the summit of the petiole jind the 

 woody basal margin, all passing into 

 the laminae; leaf substance thin. Type 

 S. grandifolia. 



grandifolia, Fontaine A White, 1880, Perm, 

 or Up. Carb. Flora, p. 101, Coal Meas. 

 or Permian. 



salisburioides, Fontaine & White, 1880, 

 Perm, or Up. Carb. Flora, p. 102, Coal 

 Meas. or Permian. 



Schizopteris, Brongniart, 1828, Prodr. d. Hist, 

 d. Veg. Foss., p. 63. [Ety. schizo, I 

 cleave; pteris, fern.] Frond laciniate, 



