JURASSIC FLORA OF DOIMJLAS COrXTV, OREd. 113 



(ioinis (TEXIS Liiidlcv and llulldii. 



Ctknis sri.cicAii.is (l'l;illi|i>i Ward n. roinl)." 



I'l. XXV. Fii;-. '•: I'l. XX\I. 



IS'i.S. Zam'm Inncfilhliu Bnniu:!!. ; I'rodroinc. j)]). '.M. I'.t'.» OionuMi). 



1829. Cyraditeti su/ricdiills I'liill.: (i(>()l()<,ry of Vnrksliiiv. ])]). 1 4s. is'.i. j)!. vii. lig. L'l. 



1,834. rttni\faJratii L. & II.: Foss. Fl. (it. I'.iii.. \nl. II, |.. (i:;. pi. <iii. 



1S41. Ziiiiiitis hnKiiUil'inx (V>nm\i\\.) Morr.: Ann. cV^ Ma^. Xat. Ili.st., 1st Scr., 



Vol. VII, p. 116. 

 IStU. I'liropliiiUninfcilaifiiii, (L. .<: II. I San(ll)cr>;cr [non Xatli.]: ' NCrli. d. Xaliirw. 



\'(>r. in Karlsrnlii', Ilrl't I, \). :!•") [d]- 



A inmilK'r of spociincns of thi.s Hue plant woi'o obtaiiipcl. Unfortu- 

 nately the stratum whicli contains most of them has no cleavage and 

 tends to l)reak across th(> plane of the leaves. Hence the specimens 

 procm-ed are smaller than the parts contained in the rock. The figures 

 given hy Zigno' of this plant very accurately represent it as found in 

 the Oregon strata. 1 do not find, however, on the axes, the regular 

 reticulation given in Zigno's Fig. la. The marking on the axes is an 

 irregular wrinkling or puckering of the epidermis, seen onl>- when that 

 is present. The axes seem to be very robust, but the amount of vas- 

 cular tissue is not so great as might l)e supposed from its width. They 

 were apparently succulent, with a large proportion of cellular tissue. 

 The apparent width is increased also by the continuation, over th(> axis, 

 of the thick epidermis of the base of the leaflets. The leaves must 



« The name Ctenis falcata L. & H. certainly can not stand. Lindley and Button themselves state that it is 

 the Chjcmliteii sulcicaulin of Phillips, of which that author gives a fair figure in his Geology of Yorkshire ( 1829) . 

 That Lindley and Hutton had better material and made a better figure is no reason for changing a name, 

 as this would permit anyone at any time to make a new name if better material were discovered. The name 

 Zamia Inmj'ifoUa of Brongniart, given by Mr. Seward (Jur. Fl. Yorksh. Coast, p. 23.5) may be ignored as a 

 nomen imdum, no description or figure of it having ever been published either under that name or under 

 the name Zamiles lo7i^ifoliiis, first used by Morris in 1841, and later by Brongniart himself in his Tableau 

 (l)p. B2, lOfi). The fact that Mr. Seward found in the Paris Museum a specimen labeled Zamia longifolia 

 l)cl()nging to this species is scarcely sufTicient to justify giving this specific name to the plant. If it had been 

 the I vpe, so designated by Brongniart in his Prodrome, or even on the label, it might have been accepted under 

 some codes, as, for example, that of the Ornithologists' Union, Canon XLIII, p. .53; but Mr. Seward does not 

 sav that the label wa.'i in Brongniart 's handwriting, and, moreover, the specimen was found at Caylon near 

 Scarborough, while Brongniart (Prodrome, p. 199) gives Whitby as the locality. All things considered, tlicre- 

 fore, it does not seem possible to adopt Brongniart's name, and it must become a synonym.— L. F. W. 



'' This combination is usually credited to Sehimper (Pal. Veg., Vol. II, p. 137), who does not meniion 

 Sandberger's paper. The Pterophijllum :> falcatum Nath., Fl. v. Bjuf, Hft. 11, p. 71, pi. xiii. figs, lli, 17 

 (1879), wliatever it may be, is a preoccupied name and must be cliangcd. — L. F. W . 



cFlor. Foss. Form. Oolith., \<A. I. pp. 190-192. pi. xxiv, figs. 1-3. 



MON XLvni — 05 



