282 FLORA OF LOWER COAL MEASURES OF MISSOURL 



pages, we mav suminarize them, somewhat uiisystematically, as follows, the 

 figures given representing the number of species' described: 



Aloie 2. Cyclocladia aud Blacrostachya, 2. 



Fungi, 2. Radicites, 2. 



Eremopteris, 2. Spheiiophyllum, 5. _ 



Pseudopecopteiis, 3. Lepidodeudrou, 5. 



Mariopteiis, 4. Lepidopliloios, 1. 



Spbeuoptei-i.s, 19. Lepidostrolms, 3. 



01ioocari)ia, 3. Lepidoxjliyllum and Lepidocystis, 2. 



Pecopteris, 10. Omphalopliloios, 1 



Spiropteris aud Brittsia, 2. Sigillaria, 4. 



Aphlebia and Feru truuks, 12. Stigmaria, 2. 



Aletbopterls and Tt^niopteris, 3. TaniiopliylUnn and Lepidoxylon, 2. 



Callipteiidium, 5. Cordaites, 2. 



iS^europteiis, 5. Cordaiauthus, 2. 



Liuopteris and Odontopteris, 2. Uordaicarpon, 1. 



Calamites, 3. Cardiocarpon, 1. 



Asterophyllites, 2. Rliabdocarpos, 2. 



Aunularia, 3. Titanophyllum? 1. 



Calamostachys aud Volkiuanuia, 2. Dicrauopliyllnm ' 1. 



GENERAL RANGE OF THE MISSOURI FLORA IN THE COAL MEASURES OF THE 



UNITED STATES. 



From the summary given above, it will be seen that nearly all the com- 

 mon genera of the Mesocarboniferous of the world are represented in tlie 

 flora of Missouri. Among the more important exceptions are the genera 

 Trigonocarpum,^ Bothrodendron, Loncltopteris, and the newer divisions of the 

 old genus Cordaites. The second genus, Bothrodendron, is very rare in this 

 country and has been supposed by many to be entirely wanting. There 

 are, however, numerous specimens of it in the recent collections made by 

 the Survey from the Kanawha series (Lower Coal Measures in the Europeaia 

 sense) of West Virginia. There is, moreover, little room for doubt that the 

 fossil described by Professor Lesquereux^ from "near the base of the Middle 

 Carboniferous Measures" near Alta, Ilhnois, as Cydostigma Kiltorkense 

 Haught., is a representative of the same genus, though the identity of the 

 fossil with the species found in the Old Red Sandstone of Ireland is most 

 improbable. The genus Loncliopteris has not yet, so far as I am aware, 

 been found in North America. 



1 It is possible tliat the evnsbed fruits idi-utified as RluiMocarpos muWstriatm may, when found 

 better preserved, show the characters of Trigonocarpmn. 

 - Coal Flora, vol. ii, 1880, p. 429. 



