J70 



K«^ssn. n.wrs vkou tkxas — k»^m'\ink. 



Ill ihu'kiH'ss ;iiul -'A ct'iilimflt'is in Icuylli. rin> cliarMcIrr of j lie mmIcs 

 t>r (lie coiu' \\;i.s iiol iiiadr oiil. Tlic pidbaMi" s| aiiiiiiali' aiin'iils ar(> 

 oltloiiii to «_\ limlrital ill runii, cttNcrrd w illi < losciv aiiprcssrd aiul itii 

 hrit'au>il scalt's llial aiv olli|tli» al in sliapr and lia\ c al llicir ends a<ii((> 

 prolon^aiions llial art' about half as lonu" as llichodyol' (lu' stale. Tlu'so 

 aiiuMits aro al»oiil l'! iiiilliincltMs loui; and .'! inilliiiu>lcis lliicK. 



Niiiiicrous spoi'iiiuMis of tin's nolcwoit liv plant oi'ciir. and it was 

 t'U>aily vny coininon in I ho Trinity lloia. 1 ' niort nnalrly tin- thick 

 toriactuMis h'avrs hav(> a .ureal tendeiH.N to \>rc\ otV troiii I lu> stone, and 

 lieiu-e speeinieiis handled wilhoiil ur(>at tare are tMsily spoihtl. 



ri. xwviii, Fiii. r». uivesa portion of what was a branch of consider. 

 able size. It show s what st^'ins to Ili\ e In^en coninion in the jtlant, \ i/,., 

 the (endency of the t w i.us t(» diverge at tiist w idely fnnii the steins w liicli 

 i^ive them olV, and tluMi to curve npwards toward the ends ot' the main 

 biancht's. This liiiiii*' shows also the dicli«ttomoiis modi' ot(li\ isiftii ot 

 tiio branches, which seems to liavt> been the most common. 



Pi. \\\i\, 1-M,u, 1, represents the end t»f a componnd branch that is 

 iniich smaller than tliat ^iveii in l-'ij;. o, which is the middle portion of 

 the branch. 



In Pl.xwix, Fiii. 1, the airaiiuemcnt ol the nil imale t w i^s in an alter- 

 nate manner, a l(>ss common nuule, is seen. Some of the ultimate twi<;s 

 111 this specimen w t-ro l»roUeii olV, so that the ultimate uronpiiio- is not 

 fully shown. The only cone found which can with in-obability be n> 

 forrod to this lUaehyphyllnm is that .uivt^i in IM^. o, IM. iii. As the 

 stone in splitting- carri(>tl oil' the upper snrlace of this cone the character 

 ot' the scahvs w as not made out. w hile its diniensions and sliapt^ are well 

 disclosed. The scales seem tt) have been iatlu>r thick towanl their froo 

 ends, wed.m'-shaped towards their base, and to have overla])iu<d one 

 another. 



The small anient represented m IM. wxviii, Fi.u. I, most probably bo. 

 loujis to this lirachyphyllnm, bcinii the stamiiiato anient. The shape 

 of its scales agrees well with those tiunred by Sapo'-ta* for />, _f/r»r<'//r, 

 but the aiiuMit from Texas is more slender or cylindrical in sliapt>. 



This plant is most probably anew species. It is probably nearer 

 />'. MorndiiniKtii Kronen., than any pre\ ioii^ly described sptH'ios, but 

 di Iters fn Mil this in the i^reatcr iinifv»rmily in the shape of the leaves, 

 and 111 the constant abs(>nce of any mammillary prominem-e on their 

 backsas w (dl as in the more tU>cided de\ elopment of a laiuet shaped tip. 

 Itistpiite dilVerent from /.'.<•/(». sw/ccn/Zc Font., of the N'iruiiiia l'ot«» 

 inaet in showinu- a more sparse dichotomons branchiiii:, in the distinct 

 keel, in the denser eitidermis of the Icaxcs, and in their i>roloii<;ation 

 at their tips. 



*r;di onloioiiio l'i!inv«is«\ rhiittos jurassitpu's. 'I'oiiie in: iitla^, 1*1. \iin, I'iir. 7. 

 tMmiogiaph \v. l', {<. Ot'ological Survoy, I'art i. toxt, p. 221. 



