PLATE LXX. 



SiGILLARIA CAMPTOT^NIA Wood. 

 (Page 230.) 



Fk;. 1. Fragment from young stem, partially deprived of tke epidermis. U. S. Nat. Mus., 606.3. 



3. Another stem in which both the leaf scars and the diagonal cross-striation, usually less clearly 



seen when the epidermis is preserved, are shoTvn. U. S. Nat. Mus., 6064. 

 3a. Enlarged detail showing leaf scars, supr.-i- and subjaceut shields, and cortical aspect ; from the 



same specimen. x2. 

 36. Enlarged detail of leaf scar and environment; from same. x4. 



4. Surface of fragment of old trunt, from which the epidermis is partly removed. It shows the 



casts of the narrow, short bolsters. U. S. Nat. Mus., 60.52. 

 4a. Partially decorticated bolster of the same. X2. 

 4/j. Bolster of same, without epidermis and leaf cicatrix. x2. 



Stigmabioid impression. 



(Page 246.) 



Fig. 5. Impression, apparently Stigmariau in nature, with deep diagonal cross wrinkling, perhaps 

 referable to Sigillaria camptotatiiia Wood. U. S. Nat. Mus., 6067. 



SiGILLARIA SIGILLARIOIDES Lx. Sp. 



(Page 230.) 



Fig. 2. Portion of flattened .stem. The fragment photographed is the "reverse" of the original 

 type, described and illustrated (Coal Flora, p. 425, jil. Isviii, figs. 8, 8a) as Lepidopldoios 

 siflUIarioides Lx. Lacoe collection, U. S. Nat. Mus., 6650. 



450 



