116 



PLANTS. 



[CYC— DEC. 



volida, see Aneimites validus. 



varia, Dawson, 1862, Quar. Jour. Geo. 

 Soc, vol. 18, p. 319, Devonian. 



virginiana, see Pseudopecopteris virgin- 

 iana. 



wilsoni, Wood, 1860, Proc. Acad. Nat. 

 Sci., p. 519, Coal Meas. 

 Cyclostigma, Haughton, 1860, Ann. and 

 Mag. Nat. Hist., 3d ser., vol. 5, p. 444. 

 [Ety. kuklo8, circle; stigma, a dot or 

 puncture.] Stems arborescent, surface 

 tuberculate,rugoselengthwise ; tubercles 

 in regular spiral order, small, subglo- 

 bose, more generally conical, acute, 

 topped with a vascular terminal and 

 prominent point, or more rarely flat- 

 tened at the top into small, round 

 areoles, with the vascular point in the 

 middle ; decorticated surface smooth or 

 obscurely striate lengthwise by the 

 series of tubercles, which are oval, ele- 

 vated or prominent, and gradually ef- 

 faced downward or decurnng, preserv- 

 ing the impressions of the central vas- 

 cular scars. Type C. kiltorkense. 



afline, Dawson, 1881, Quar. Jour. Geo. 

 Soc, vol. 37, p. 301, Chemung Gr. 



densifolium, Dawson, 1871, Foss. Plants 

 Can., p. 43, Devonian. 



kiltorkense, Haughton, 1860, Ann. and 

 Mag. Nat. Hist., 3d ser., vol. 5, p. 

 444, Subcarboniferous. 

 Cymoglosw, Schimper, 1869, Traits de 

 Paleontologie Vegetale, vol. 1, p. 553. 

 [Ety. kumo, wavy ; glossa, tongue.] 

 Frond pinnate, or bipinnatc ; pinna 

 oblong, sessile, alternate, margin lobed; 

 nerves simple or branching, reaching 

 the margin and leaving triangular spaces 

 without nerves. Type C. goepper- 

 tana. 



breviloba, Fontaine & White, 1880, Perm, 

 and Up. Carb. Flora, p. 86, Coal Meas. 

 or Permian. 



formosa, Fontaine & White, 1880. Perm, 

 and Up. Carb. Flora, p. 86, Coal Meas. 

 or Permian. 



lobata, Fontaine & White, 1880, Perm, 

 and Up. Carb. Flora, p. 87, Coal Meas. 

 or Permian. 



aobtusifolia, Fontaine & White, 

 1880, Perm, and Up. Carb. 

 b Flora, p. 85, Coal Meas. or 



Permian. 

 Dactvlophvcus, Miller & Dyer, 

 1878, Cont. to Pal., No. 2, p. 1. 

 [Ety. dactylos, finger ; phukos, 

 sea-plant.] Stem divided at 

 one or both ends into three 

 or more short subequal 

 branches, and closely related 

 to Ichnophycus. Type D. tri- 

 digitatum. 

 quadripartitum, Miller & Dyer, 

 1878, Cont. to Pal., No. 2, p. 2, 

 Utica Slate Gr. 

 tridigitatum, Miller & Dyer,1878, Cont. 

 to Pal., No. 2, p. 1, Utica Slate Gr. 



FiQ. 30. — Dadoxy- 



imi. «, bark ; b, 

 wood; / ii ii «• or 

 liinT ipleuren- 

 c h y in a) : '■, iih'- 

 ilulla or pith ; d, 

 OMl o| tin I 1 i) \V 



pith in- iternber- 

 gla. 



Dadoxvlon, Endlicher, 1840, Syn. Con. [Sig. 

 pine or torch-wood.] Branching trunks, 

 with distinct zones of growth and a 

 pith -of Sternbergia 

 type; wood-cells, with 

 rows of areoles with 

 oval pores; medullary 

 ravs with series of 

 cells, 

 acadianum, Dawson, 

 1863, Can. Nat., vol.8, 

 and Acad. Geol., p. 473, 

 Coal Meas. 

 annulatum, Dawson, 

 1863, Can. Nat., vol. 8, 

 and Acad. Geol. p. 473, 

 Coal Meas. 

 antiquum, Dawson, 18(>3, 

 Can. Nat., vol. 8, and 

 Acad. Geol. p. 473, 

 Coal Meas. 

 clarkii, Dawson. 1882, 

 Foss. Plants Erian 

 and Up. Sil. Eorma- 

 tions, pt. 2, p. 124, Gen- 

 esee shales, 

 halli, Dawson, 1862, 

 Quar. Jour. Geo. Soc, vol. 18, p. 306, 

 Ham. Gr. 

 matrriariuni, Dawson, 1863, Can. Nat., 

 vol. 8, and Acad. Geol., p. 473, Up. Coal 

 Meas. 

 newberryi, Dawson, 1871, Foss. Plants 



Can., p. 14, Portage Gr. 

 ouangoinliamim, Dawson, 1861, Can. Nat., 

 vol. (i.itinl Acad. Geol, p. 684, 

 Up. Devonian. 

 DAN.EITE8, Gceppert, 1888, Svst, 

 Filic. Foss., p. 380. [Ety. 

 from the genus Dahma,] 

 Fronda pinnate; ■eoondary 

 veins coining out in right 

 angles from the primary 

 straight nerve, simple or di- 

 chotomous ; sporanges, on 

 the lower side of the lamina, 

 placed in rows from the me- 

 dial nerve to near the bor- 

 ders along the lateral veins, 

 oval or linear exannulate. 

 Type D. asplenioides. 

 asplenioides, var. major, Bun- 

 bury, 1846, Quar. Jour. Geol. 

 Soc, vol. 2, p. 85. Coal 

 Meas. 

 emersoni, Lesquereux, 1880, 

 Coal Flora of Pa., p. 157, 

 Coal Meas. 

 macrophyllus, Newberry, 1873, 

 (Alethopteris macrophylla,) 

 Ohio Pal., vol. 1, p. 383, 

 Low. Coal Meas. 

 Dechenia, Gceppert, 1841, Die 

 Gattungen der fossilen Pflan- 

 zen, p. 43. [Ety. proper 

 name.] Stems arhorescent; 

 leaf-scars in continuous spiral lines ; 

 bolsters oblong, rounded, marked by 

 obscure concentrical strise, on the middle 



