268 FLORA OF LOWER COAL MBAStJEES OF MISSOURL 



the avei'age, lie nearly in a row, their axes parallel, close by the side of a 

 striated branching stem over 2 cm. in diameter. No direct attachment of 

 the fruits to the stem is clear, though the arrangement is strongly suggestive 

 of a former organic union. 



Although Rhahdocarpos Mansfieldi is described by Lesquereux as the fruit 

 of Cordaites Mansfieldi, it having been found by him on a branch referred to 

 that species and occurring in the same beds, no leaves have yet-been found in 

 Missouri that can, I believe, safely be identified with the Cannelton Cordaites. 



Bihahdocarpos Mansfieldi resembles in size Pacliytesta incrassata Brongn., 

 to which it is so obviously closely related that there is little room for doubt 

 that its structure is in general the same as that of the latter species, so thor- 

 oughly and beautifully illustrated by Brongniart in his Recherches sur les 

 Graines Fossiles Silifides^ and by Renault in the Flora of Autun and 

 Epinac.^ Our American fruit, which is shorter, proportionally wider, more 

 distinctly obovate, with wider ribs than the species last named, is much 

 smaller than the P. gigantea Brongn.- P. intermedia of Grand 'Eury,^ another 

 related species, is longer, much more slender, and more pointed at the 

 extremities. Rhahdocarpos ScJmltsianiis, which has also been included in 

 Pacliytesta by Grand 'Eury,^ is much smaller than R. Mansfieldi, oval, and 

 rounded at the ends. 



Localities. — Owen's coal mine, U. S.Nat. Mus., 6178. The precise locality 

 of the slab from the vicinity of Clinton is not known; U. S. Nat. Mus., 6170. 



Rhabdocarpos multistriatxjs (Presl) Lx. 



1838. GarpoUtes mulUstriatus Presl, iu Sternberg : Versuch, vol. ii, p. 208, pi. xxxlx, 



figs. 1, 2. 

 1880. Bhabdocarpus mulUstriatus (Presl) Lesquereux, Coal Flora, vol. ii, p. 578 (pars). 

 1899. Bhabdocarpus multistriatiis (Presl) Lx., D. White, 19th Aun. Rept. U. S. G-eol. 



Surv., pt. 3, p. 534. 



It is with great doubt that I refer several specimens to this species, 

 the interpretation of which seems to have led to much confusion both in the 

 literature and in the collections pertaining to American Paleozoic plants. 

 Much of this material, including that now under consideration, would 

 appear to be referable to the original type of Trigonocarpum Scliultzianmn of 



' Paris, 1881, pis. six, xx. See also pis. xvii, xviii, xxi. 



-Bassin houiller et permien d'Autun et d'fipinac, fasc. iv; Flore fossUe, 2me partie, Atlas, Paris, 

 1893, pi. Ixxx. 



^Gtol. et pal. bassin houill. Gard, 1890, p. 308, pi. viii, fig. 3. *Y\. carb. Loire, p. 203. 



