734 SCIENTIFIC RECORD FOR 18S5. 



II. Flora of the Laramie group : 



(1) States that the flora has a relation, remarkably well defined, with 

 that of Sezanne. Says that the age of the Laramie group of Haydeu is 

 not yet definitely determined. The flora, like the invertebrate fauua, is 

 on the whole of a peculiar character, uniformily distributed over the 

 whole extent of the formation, and free from any types or characters 

 relating it to the Cretaceous flora. As the Laramie group has never 

 been subjected to submersion in the deep sea, the few remains of Dino 

 saurians found in it are derived from low marine lagoons penetrating 

 into the land, and cannot impress the formation with the Cretaceous 

 character. 



(2) Table of distribution of the species of the Laramie group. 



(3) Description of species added to the flora of the Laramie group. 

 The following new species are described : Osmunda major, Oreodoxites 

 pUcatus, Aralia pungens, Anona robusta, Zizyphus Beckwithiij Bhamnus 

 deformatus. 



III. The flora of the Green River group : 



(1) Geological distribution of the measures. 



(2) Enumeration and description of the species of fossil plants known 

 from ihe Green River group. The following new species are described: 

 Char a f gloinerata, Fontinalis pristina, Isoetes brevifolius, Sphenopferis 

 Guyottii,Adiantites gracillimns, Finns Florissanti, Widdringtonia linguce- 



folia, Cyperites Haydenii, Potamogeton ? verticillatus, Najadopsis rugulosa, 

 Lemna penicillata, Flabellaria Florissanti, Palmocarpon f globosmn, 

 Myrica obscura, M. rigida, M. callicomcEfolia, M. fallax, M. Scottii, M. 

 diversifolia, M. AlJcalina, Betula Florissanti, B. truncata, Alnus cordata, 

 Ostrya betuloides, Carpinus attenuata, C. fratcrna, Quercus Osbornii, 

 Q. pijrifolia, Q. castaneopsis, Salix amygdala'foUa, S. Libbeyi, TJlnus Hil- 

 liw, U. BrowneUii, Celtis McCoshii, Ficns tenuincrvis, F. allialina, San- 

 talum Americanum, Banlsifes Uncatus, Lomatia JiaJcea' folia, L. spinosa, 

 L. terminaUs, L. tripartita, L. aciitiloba, L. abbreviata, L. interr^ipta, 

 Pimelea delicatula, Olea prcemissa, Fraximis Eeerii, F. mespilifolid, F. 

 abbreviata, F. f myricwfolia, F. JJngeri, F. Libbeyi, Apocynophyllum 

 Scudderi, Porana ISpeirii, P. tenuis, Myrsine latifolia, Bumelia Floris- 

 santi, Macreightia crassa, Andromeda delicatula, A. rhomboidalis, Aralia 

 dissecta, Hcdera marginata, Weinmannia integrifolia, W. obtusifolia, 

 Sterculia rigida, Tilia populifolia, Acer indivisum, Sapindus inflexus, S. 

 lancifolius, Evonymus Jiexifolius, Celastrus Laccei, G. fraxinifolius, G. 

 elegans. Ilex pseudostenophylla, I. microphylla, I. maculata, I. querci- 

 folia, I. grandifolia, I. kniglitioefolia, lihamnus olecefolius, Juglans Floris- 

 santi, Rhus fraterna, R. coriarioides, R. cassioides, R. Hilliw, R. subrhom- 

 boidalis, R. vexans, R. trifolioides, Zanthoxylon spirea^folium, Ailanthus 

 longe-petiolata, Amelanchier typica, Crataegus acerifolia, Rosa HilUce, 

 Amygdalus gracilis, Gytisus modestus, G. Florissantianus, Gercis parvi- 



