DESCRIPTION OF SPECIES, 107 



ever, unable to find a published fossil species of the genus with two pairs 

 of i)arallel simple lateral nerves at a distance from each other without 

 trace of secondaries. Some living- species of Cinnamomum have, however, 

 the same character and present in the primary nervation of some of their 

 leaves a distribution of the primary nerves like that of the leaves figured; 

 C. rauiphnra and C. Zf'uhmlcniii, for instance. These peculiar characters 

 are a variation of the normal fonu. 



Leaves of 'rhil)audia liave parallel lateral nerves which ascend to the 

 apex, ])Ut thev are dift'erentlv disposed. 



llalntat: Near Fort Harker, Kansas. No. 2C)i\h of the collection of the 

 U. S. National Museum. 



Cinnamomum sezannense Watelet. 

 PI. XII, Figs. 6, 7. 



Ttaphnogene sezmmensis (Wat.) Sap. »& Mar., Fl. de Sezanne, p. 369, PI. viii. Fig. 5 

 (fragment) ; Saj). & Mar., Vtig. Marnes Heers. de Geliiiden, ]), 47, PI. vi, Figs. 5, 6; 

 Cinnaniomtim sezannense Sap. & Mar., Rt^vis. Fl. Gelindeu, p. GO, PI. ix. Figs. 2-6. 

 Heer, Fl. Foss. Arct., vol. 6, 2 Abth., p. 77, PI. xix. Fig. 8; PI. xxxiii. Figs. 11, 12. 

 vol. 7, p. 30, PI. LXI, Fig. la. 



Leaves sulicorlaceous, narrowed to the petiole from an obtuse base, 

 lanceolate above, acute or narrowed into a long acumen, entire, triple nerved; 

 lateral nerves snpra-l)asilar, ascending ])arallel to the Ijorders, short branched 

 on the outside, anastomosing above Avith the secon«laries; ner\illes numer- 

 ous, fiexuous, transverselv decurrent. 



The above description is that of Saporta (Revision of the Gelinden 

 Flora, loc. cit.). It is somewhat modified from that in Flore de Se'zamie and 

 also from that in the first volume of the Flora of Gelinden. The leaves 

 which repi'esent the species are mostlv in fragments. That in the Flora of 

 Suzanne, like our Fig. 6, has the upper and lower parts destroyed. It is 

 much narrowei-, apparently longer, the lateral secondaries being shorter, 

 less parallel to the l)orders than in our Fig. 7. Both figures of the Flora 

 of CTclinden are also fragmentarv, fullv agreeing in form, size, and nervation 

 with Fig. (') of our i)lat('; tliose of the Kevisi(m are smaller, one only (Fig 

 (!) being preserved entire. It is a small leaf with a prolonged acumen. The 

 figures given by Heer (Fl. Foss. Arct., loc. cit.) are also all of fragmentar}- 

 leaves, those of PI. xxxiii. Fig. 11, and PI. lxi. Fig. la, being of better 

 preserved leaves, much narrower than tliose of the Dakota Group, with the 

 lateral nerves straight, resembling altogether the figure in the Flora of 

 Sezaime. From a comparison of all the forms represented it appears that 



