PARIETALES. 291 



iacites formosus. Except for its relatively Coniparahle recent and fossil forms are dis- 



smaller size, slightly different margin, and less cussed at length under the Boinhaciies formosus 



numerous secondaries it would answer equally and need not be repeated suice their discussion 



well for Bomhacites xrilcoxianus. The details ap|)lies almost eciually well to Itoth s])eci('s. 



and lloral characters are of course conjeclural Occumnce. — Lagrange formation (in beds of 



but are sufficiently generalized to escape criti- Wilcox age), Purycar, Henry County, Temu 



cism. The foliar characters jire believed to be (collected by 1*^. W. Berry). Wilcox group, 2 



correct and are based on numerous specimens miles south of \aborton, De Soto Parish, La. 



of the fossil as well as on a consideration of the (collected by O. B. Hopkins). 



uniforndy digitate, long-petioled leaves of the Colhdlon. — U. S. National Museum. 



modei'H niend>ers of tiie sul)famil\' Adansonieie. 



Suggestions liave been obtained from a study Order parietales. 



of tiie leaves of mnnerous Brazilian sjjccies of Family DILLENIACE^:. 



Bomba.x and Chorisia. ^ ^„,„,,™.,„ „ 



. , , , Genus DILLENITES Berry, n. gen. 

 Occurrence. — Lagrange iormation (m beds 



of Wilcox age), Purycar, Henry County, Tenn. The genus Dillenites is proposed for the re- 



(coUected by E. W. Berry). ception of fttssil i)lants that show characters of 



Collection. — U. S. National Museum. the Dilleniaceaj but not sufficient to ally them 



„ ^ with certainty to a particular existing genus. 



BOMBACITES WILCOXIANUS Bcrrv, U. SD. rpi ■ 1 • I 1 r • ii 



' ihe genus may be considered as having the 



Plate LXXV, figure 2. generic characters included in tlie ilescriptions 



Description. — Leaflets as a nile relatively of the followmg species : 



large, ovate-lanceolate in outlhie and slightly Leaves more than 10 centimeter.s long, apex and base 



ineeiuilateral, petiolulate. Length ranges from equally pointed, margin entire below, carries wide- 



8.5 to 11 centimeters. Maximum width, which spaced serrate teeth above Dillmiles miirodaitatus. 



is in the middk' part of the leaf, ranges from 2.25 Leaves less than 10 centimeters long: 



to 3 centimeters. Apex narrowed and ex- Ovate, base broadly rounded DiUcnim ovatus. 



, , • T> Base narrowed: 



tended, acuminate. Base narrowly cuneate Leaves relatively broad, teeth close-set, acumi- 



and slightly decurrent. Petiolule stout, curved, nate-serrate Dilleniles scrmtiis. 



tumid proximad, about 1 centimeter in length. Relatively narrow, teeth clo.se-set, incumbent- 



Margms distinctly undulate, the chords of the ^'^"''^^'^ Dillmiici htracera/olk. 



undidations becommg progressively shorter T eeth remote, sirMght-sermte.. Dillenite^tezensis. 



distad mitil toward the tip the margin is weakly Dillenites microdentatus (Hollick) BeiTy. 

 dentate. Texture coriaceous. Midrib very 



J V- u 1 u • ,ti • • ii 1 Plates LXXV, figure 3; LXXVlI,figm-el; CXIV fitmreS 



stout below, becommg thm m the apex, curved. . s , , guit^x, v^.vxy, n^uiuo. 



Secondaries thin, subparallel, about 12 opposite Qttercns microdentfUa. Hollick, in Harris, G. D., and 



to alternate pairs ; they diverge from the midrib Veatch, A. (J., A preliminary report on the geology 



J. • 1 1 ii i "i 1 i of Louisiana, p. 280, pi. 34, 1899. 



at wide angles that become somewhat more ^ ' 



acute distad, curve upward in very flat arches. Description. — Leaves medium sized to large, 



and ultimately curve in a camptodrome man- elliptical in general outlme, apex and I)ase 



ner parallel with the marginal undulations acumuiate and equally pouited. Length ranges 



and close to them, where they join the adjoin- from 11.75 to 22 centimeters. Maximum 



ing superior secondaries. Tertiary venation width, midway between the apex and the base, 



obsolete. ranges from 6.5 to 9 centimetei-s, the lateral 



This species is clearly distinct from previ- margins formmg regularly curved arcs from 



ously described forms and is obviously refer- base to tip. Margms entire and undulate 



able to the subfamdy Adansoniete of the Bom- proximad for about one-third to one-half tlieir 



bacaceiB. It resembles Bomhacites formosus length, crenate-serrate for the upper one-third 



considerably but differs in its larger size, undu- to two-thirds of their length, the teeth remote 



late margins, extended acumen, more numer- and more or less evenly spaced, not enlarged, 



ous secondaries, which approach closer to the becommg closer distad. Texture coriaceous. 



margins, and in the development of a stout Petiole missmg. Midrib stout and prominent. 



petiolule. Secondaries relatively thin, numerous, about 



