172 



SHORTER CONTRIBUTIONS TO GENERAL GEOLOGY, 1021. 



halfway to the base into tlu'ee ovate erect 

 lobos, which are rather bluntly or conically 

 pointed. The median lobe is largest and most 

 expanded medianly. The margins are entire, 

 and the lower lateral margins are fidl and 

 rounded. The liase is more or less decuirent. 

 The leaf substance is thin. Length from 4 to 

 10 centimeters; maximum width, about half- 

 way between the apex and the base, from 3.5 

 to U centimeters. Petiole missing in all the 

 knowai material. Midrib stout, normally 

 straight. A single stout lateral primary di- 

 verges from the mitlrib at an acute angle at its 

 extreme base on either side and terminates at 

 the tip of the lateral lobe. The secondaries 

 are thin, numerous, ascending, and campto- 

 drome, the basal lateral secondaries being 

 especially long and ascending, the others being 

 subparallel. Tertiaries mostly percurrent, 

 open. 



This species, which shows considerable re- 

 semblance to some of the Upper Cretaceous 

 forms that have been refeiTed to the genus 

 iS'a,s.sa/>a.s, was described from material col- 

 lected in the Dakota sandstone of Ellsworth 

 County, Ivans. Small leaves are abimdant in 

 the characteristic concretionary specimens, 

 which I believe represent the true Dakota 

 sandst(nie rather than older beds in that area. 

 The species is not abundant m the Woodbine 

 sand, but there are several specimens in the 

 relatively small colkn'tions from that forma- 

 tion, to which and the Dakota this form appears 

 to be confined. 



Genus MALAPOENNA Adanson. 

 Malapoenna falcifolia (Lesquereux) Knowlton. 



Lilseii faleifoUn l^esqiieroux. The flora of tho I'akota i,'vouii, 



p. 97, pi. 11, tig. 5, 1892. 

 Miiliipoenna fiilcifalvi (Lesquereux) Knowltou. l'. S. 



Geol. Siin-ey Bull. 152, p. 142, 1898. 

 l!en-y, ToiTey Bot. Club Bull., vol. 33, p. ISO, 190i;; 



New Jersey Geol. Siu'vey Ann. Kept, for 1905, 



p. 139, 1900; Torrey Bot. Club Bull., vol. 39, p. 



399, 1912: V. S. Geol. Survey Trot. Paper 112, 



p. 122, pi. 21, tig. 5, 1919. 



Leaves of rclntively small size, lanceolate, 

 falcati\ Length about 5 to 6 centuneters; 

 maximum witlth, al)Out halfway between the 

 apex and the base, if anythmg slightly nearer 

 the base, about 1.7 centimeters; from this 

 point the blade narrows to the lanceolate base 

 and gradually tapers to the extended acuminate 

 tip. Petiole not preserved. Midrib much 



curved, thiti distad. Secondaries three or four 

 pairs; the 1ow(M' suprabasilar and subopposite 

 pair should possibly be termed lateral primaries, 

 as Lesquereux called them. These lower 

 secondaries are thin and branch from the mid- 

 rib at angles of 45° or less, sweeping upward in 

 a long curve, at length camptodrome. Upper 

 secondaries somewhat irregtilarly spaced, camp- 

 todrome. Tertiaries very fine and more or less 

 obsolete. Texture coriaceous but not thick. 

 This attractive species is easily distinguished 

 from other lauraceous forms, particularly from 

 species of Cinnamomum, with which Lesque- 

 reux originally c(mipared it, by its slight in- 

 equilaterality and marked falcate form, as well 

 as by the lack of definiteness in the triple 

 veiuxtion, the suprabasilar position of the so- 

 called primaries, and the character of the 

 tertiary venation. It was described originally 

 from material found in the Dakota sandstone 

 near Delphos, Kans., and subsequently was 

 discovered by me m the Magothy formation of 

 New Jersey. Some of the specimens from the 

 lower part of the Tuscaloosa formation of Ala- 

 bama, though the material is not extensive, are 

 complete and are entirely characteristic, as is 

 the single specimen discovered at Arthurs 

 Bluff, Tex. It may readilj^ be distinguished 

 from Malapoenna horrellensis Berry ,'''^ of the 

 L'pper Cretaceous Black Creek, Eutaw, and 

 Ripley formations, by its suprabasilar primaries 

 and cuneate base. 



Genus OREODAPHNE Nees. 

 Oreodaphne alabamensis Berry. 



Plate XXX VI I, figure 1. 



Oriodaphnr ulahununsis Berry, Torrey Bot. Chib Bull., 

 vol. 39, p. 400, pi. 32, 1912; "u. S. Geol. Survey 

 Prof. Paper 112, p. 119, i)l. 19, figs. 3-5, 1919. 



Leaves of large size, ovate, from 13 to 20 

 cubic centimeters in length and from 4.75 to 7 

 cubic centimeters in mnximum width, which 

 is at a point midway between the apc.x and 

 the base. From the point of greatest width 

 the m;irgins cur\e, both distad and proxiiuiid, 

 in a very full cnr\e, narrowing rather abruptly 

 to the acuminate tip and also to the more or 

 less decurrent base. Midrib stout, curved. 

 Lateral piimaries opposite, one on each side, 

 brandling from the midrib at an acute angle a 

 considerable distiince above its base, ratb.er 



Si Borry, E. W., Torro.v Bot. Club Boll., vol. 37, p. 198, pi. 24, figs, 

 l-'l, 1910. 



