WHITE] NOTES ON CHAKACTERISTIC SPECIES. 901 



slender, almost stalk-like base, as in the normal form. The leaves at 

 the base of the branch verticil are much more elongated and deeph^ 

 and narrowly cut than in the normal t^^pe. 



Sp/itnajj/if/fhim ten lie ii\:>pein's to be related to the S. rnajiisoi Bronn, 

 though the differences noted above seem to readily distinguish it from 

 that as well as other species. It is also closely allied to another very 

 large- leafed species, not yet described, from the Vespertine or Pocono 

 series (basal Carboniferous) of southwestern Virginia, between which 

 and the former it appears to be intermediate. 



The species here described is one of the most beautiful as well as 

 wideh' distributed plants of the Pottsville series, ranging in identical 

 forms along the Appalachian trough from Pennsylvania southward 

 to Warrior, Alabama. In general it is quite characteristic of the 

 middle or Horsepen division (Clark formation) of the Pottsville series, 

 to which its horizon in the roof of Lykens coal No. 4 also belongs. 

 Although several fragments from near coal No. 2 or No. 3 at the New 

 Lincoln mine appear so nearly in agreement with the tA^ pes as to be 

 not readily distinguishable from the typical form, I have not met it 

 elsewhere in the Upper L3"kens division or the Sewanee zone. It is 

 not certain that the specimen is from the Upper Lykens division. 

 In the Southern Anthracite field the species occurs in the roof shales 

 of Lykens coal No. 4, at the Brookside and Lincoln collieries, the 

 Kemble drift, the North Brookside prospect shaft, and in the gap at 

 Pottsville. 



Lepidodendron alabamense sp. nov. 



The species which will later be described in full and illustrated 

 under the above name includes the specimens from the upper part of 

 the Clark and from the Quinnimont formations in the Virginia region, 

 and from the vicinity of the Warrior coal in the Alabama section, 

 included b}^ Lesquereux^ in Lejyidodendron Sternbei'giL It belongs to 

 a Lepidodendroid type presenting several phases or modifications in 

 the different zones of the formation. Typically, however, as seen 

 in the region of Lykens coal No. 4, or in the Quinnimont formation, in 

 which it is generally found in association with Marlopterls 2)ottsvillea^ 

 NeurojJteris Smii/i.'iii, Spheiiopliylluni tenue^ LepidopliyUimi qiiinni- 

 montanum, and Trigonocajpitni Ilelence^ it is especialh' characterized 

 by the robust, thick branchlets, densely clothed with thick, rigid, rather 

 short leaves, which, though verv oblique at the l)ases, rapidly curve 

 outward, upward, and then inward, while tapering gradually, so that 

 their upper portions assume a distinctly incurved or somewhat uncinate 

 form. Stems and branches of this type are present in the roof shales 

 of Lykens coal No. 4 at the Brookside mines and at Kalmia, and in the 

 Pottsville Gap at a horizon about 775 feet below the Twin coal. 



'Coiil Floni, Vol. II, p. 36C. 



