SIG. SPH.] 



PLANTS. 



141 



Geol., vol. 8, and Acad. Geol., p. 475, 

 Coal Meas. 



tessellata, Steinhaur, 1818, (Phytolithus 

 tessellatus,) Trans. Am. Phil. Assoc., 

 vol. 1, p. 295, and Coal Flora of Pa., p. 

 481, Coal Meas. 



vanuxemi, Goeppert, 1852, Die fossile 

 Flora des Uebergangsgebirges, p. 546, 

 and Coal Flora of Pa., p. 505, Coal Meas. 



venosa, Brongniart, 1828, Hist. d. Veg. 

 Foss., p. 424, and Coal Flora of Pa., p. 

 842, Coal Meas. 



voltzi, Brongniart, 1828, Prodr. d. Hist. d. 

 Veg. Foss., p. 65, and Coal Flora of Pa., 

 p. 492, Coal Meas. 



williamsi, Lesquereux, 1880, Coal Flora of 

 Pa., p. 488, Coal Meas. 



yardleyi, Lesquereux, 1858, Catal. Potts. 

 Foss., p. 17, and Coal Flora of Pa., p. 

 491, Coal Meas. 



SIGILLARIOIDES, Lesquereux, 1870, Geo. Sur. 

 111., vol. 4, p. 449. [Ety. from its re- 

 semblance to the genus Sigillaria.] 

 Fragments of roots bearing stigmariod 

 leaves attached to sigillarioid rhom- 

 boidal scars. Type S. radicans. 



radicans, Lesquereux, 1870, Geo. Sur. 111., 

 vol. 4, p. 449, Coal Meas. 



stellaris, see Stigmaria stellaris. 

 SIGILLARIOSTROBUS, Lesquereux, 1884, Coal 

 Flora of Pa., p. 794. [Ety. the genus, 

 Sigittaria ; strobus, cone.] Sporanges at- 

 tached in horizontal rows to a vertical 

 axis, supported by persistent sporangi- 

 ophores, with lanceolate scales, turned 

 up and imbricate. Type S. laurencianus. 



laurencianus, Lesquereux, 1884, Coal Flora 



of Pa., p. 794, Coal Meas. 

 Solenoula, Wood, 1860, Proc. Acad. Nat. Sci., 

 vol. 12, p. 238. [Ety. soltn, a channel ; 

 oulos, entire.] Probably a decorticated 

 Syringodendron. Type S. psilophloeus. 



psilophloMs, Wood, I860, Proc. Acad. Nat, 



Sci., p. 238, Coal Meas. 



SOROCLADUS, Lesquereux, 1880, Coal Flora 

 of Pa., p. 327. [Ety. soros, a heap: one 

 of the fruit dots on the back of the 

 frond ; klado, I break in pieces.] A 

 name proposed for fruiting fragments 

 not well understood. Type S. stellatus. 



FIG. 72. Sorocladus asleroides. 



asteroides, Lesquereux, 1870, (Staphylop- 

 teris asteroides,) Geo. Sur. 111., vol. 4, 

 p. 406, Coal Meas. 



ophioglossoides, Lesquereux, 1880, Coal 

 Flora of Pa., p. 329, Coal Meas. 



eagittatus, Lesquereux, 1870, (Staphylop- 

 teris sagittatus,) Geo. Sur. 111., vol. 4, p. 

 407, Coal Meas. 



stellatus, Lesquereux, 1860, (Staphylop- 

 teris stellata,) Geo. Sur. Ark., vol. 2, p. 

 309, Coal Meas. 



wortheni, Lesquereux, 1870, (Staphylop- 

 teris wortheni,) Geo. Sur. 111., vol. 4, p. 

 405, Coal Meas. 



SPHENOPHYLLUM, Brongniart, 1828, Prodr. d. 

 Hist. Veg. Foss., p. 68. [Ety. sphen, a 

 wedge ; phyllon, a leaf.] It was called 

 Rphenophyllites by Brongniart in 1822. 

 Plant herbaceous ; stems articulate, in- 

 flated at the articulations, pinnately, bi- 

 pinnately divided ; leaves verticillate, 

 sessile, wedge-form, with lateral bor- 

 ders entire, crenulate, dentate, or lacin- 

 iate-lobate at the upper margin ; me- 

 dial nerve none; veins straight di- 

 chptomous ; fructifications in cylindrical 

 spikes, with bracts curved upward in a 

 sharp flexure from near the base ; 

 sporanges globular in the axils of the 

 bracts. Type S. schlotheimi. 



angustifolium, Germar, 1844, Verst. d. 

 Steink. v. Wett., u. Lobejiin, and Coal 

 Flora of Pa., p. 726, Coal Meas. 



antiquum, Dawson, 1861, Can. Nat., vol. 

 6, p. 170, Devonian. 



bifurcatum, Lesquereux, 1860, Geo. Sur. 

 Ark., vol. 2, p. 309, Coal Meas. 



brevifolium, Newberry, not defined. 



cornutum, Lesquereux, 1870, Geo. Sur. 

 111., vol. 4, p. 421, Coal Meap. 



densifoliatum, Fontaine & White, 1880, 

 Perm, or Up. Garb. Flora, p. 37, Coal 

 Meas. or Permian. Syn. (?) for S. 

 angustifolium. 



emarginatum, Brongniart, 1828, Prodr. d. 

 Hist. Veg. Foss., p. 68, and Coal Flora 

 of Pa., p. 53, Coal Meas. 



erosum, Lindley & Hutton, 1833, Foss. 

 Flora, vol. 1, p. 43, and Coal Flora of 

 Pa., p. 55. Coal Meas. 



filiculme, Lesquereux, 1858, Geo. Rep. 

 Pa., vol. 2, p. 853, Coal Meas. 



fontainianum, S. A. Miller, 1883, 2d. Ed. 

 Am. Pal. Foss., p. 258, Up. Coal Meas. 

 Proposed instead of S. latifolium, in 

 Perm, or Up. Carb. Flora, p. 36, which 

 was preoccupied. 



latifolium, Wood, 1866, Trans. Am. Phil. 

 Sac., vol. 13, p. 347, Coal Meas. 



latiiolium, Fontaine & White, 1880. The 

 name was preoccupied. See S. fontain- 

 ianum. 



longifnlium, Germar, 1831, (Rotularia 

 longiiolia,) Isis, p. 426, and Coal Flora 

 of Pa., p. 53, Coal Meas. 



oblongifolium, Germar, 1844, Verst. d. 

 Steink. v. Wett., u. Lobejiin, p. 12, 

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

 Meas. 



primsevum, Lesquereux, 1877, Proc. Am. 

 Phil. Soc., p. 167, Hud. Riv. Gr. I 

 think this is not a plant. 



