﻿326 SMITHSONIAN MISCELLANEOUS COLLECTIONS I VOL. 47 



occasional irregular faint lineation, and on the smaller divisions of 

 the rachis by minute elongated punctations. 



On examining the plant material from Nuttall I was more than 

 surprised at finding specimens in which the peculiar little rhombic 

 winged fruits (Wardia) usually found at other localities in associa- 

 tion with the Pottsville Aneimites were not only still attached to 

 their stalks, but in actual union with fragments of pinna; unmistak- 

 ably bearing the small reduced pinnules of the species described 

 above. These fruits, found abundantly associated with the pinnae 

 of Aneimites fertilis at this locality, appear to present themselves in 

 nearly all stages of development, while many detached mature ex- 

 amples occur scattered on the fragments of shale. 



Figure 4, plate xlvih, exhibits the lax, elongated, and ramose 

 habit of the apical portion of the fertile pinnae. The rachis becomes 

 less terete and more flexuose, while forking pinnately and distantly 

 below and more closely above. At the same time, with the disap- 

 pearance of pinnules, the axes become more lax, and spread out 

 thinner in passing upward, the distal lobes or divisions (pedicels) 

 also becoming cuneately expanded at the apices, while revealing 

 several thin nerve-strands, which, in the most dilated apices, give 

 rise to a distant, dichotomous nervation, that, so far as developed, is 

 precisely in agreement with the nervation of the sterile portions of 

 the frond. At the distal margins of these terminal expansions are 

 developed the fruits, usually singly, though rarely two appear on the 

 same pedicel, in which case one is commonly immature or abortive. 

 The more dilated apices, which retain a broader foliar lamina and 

 more distinct nervation, seem at most not to bear more than minute 

 and undeveloped or abortive fruits. Several imperfectly preserved 

 fruits are seen in the specimen figured, while a number of scarred 

 apices mark the points of detachment of other mature specimens. 



The characters both of pedicels and of seeds are better shown in 

 a more simply divided example, illustrated in figures 5 and 5a, plate 

 xlvih. This specimen shows well two of the broader, nervose, 

 apical dilations which are seen to be shallowly and broadly digitately 

 lobate. The lobes are always thickened and concavo-convex, and 

 frequently seem to contain a small scar or pit. They are, perhaps, 

 to be regarded as abortive, though it is possible that they may be 

 sporophytic. They are strongly suggestive of a developmental stage 

 of a sporangial type found in association with an undescribed species 

 of Aneimites from the base of the Pottsville near Pocahontas, Vir- 

 ginia. Evidently they are less altered from the ordinary foliate type. 



At the base of the nearly fully developed seed on tbe left in the 



