32 TERTIARY INSECTS OF NORTH AMERICA. 



of Celastrites, known only by a few leaves. The Sapindaceae are very 

 numerous in individuals; a species of Acer is represented by leaves, flowers, 

 and fruits, but not yet described ; leaves of a Staphylea occur with five 

 species of Sapindus and one of Dodonaea. The flora has a large number 

 of Leguminosae, eleven species occurring, of eight genera, Cytisus, Dal- 

 bergia, Cercis, Podogonium, Cassia, Leguminosites, Acacia and Mimosites ; 

 Lesquereux formerly referred some of them to Robinia and Colutea. The 

 Rosacese show an Amygdalus, leaves of Rosa, and a species of Spiraea, 

 with very finely preserved leaves of an Amelauchier, scarcely distinguish- 

 able from some of the varieties of the living species. Numerous leaves of 

 Weinmannia of three species represent the Saxifragaceae, and, finally, a 

 species of Aralia and another of Hedera, the Araliaceae. 



Among the gamopetalous plants the Ericaceae are represented by what 

 is probably Vaccinium reticulatuni Al. Br., together with a species of An- 

 dromeda; no less than six species of Ilex represent the Aquifoliaceae; two 

 of Diospyros, and one each of Bumelia and Macreightia, the Sapotacese: a 

 species of Myrsine, so common in the European Tertiaries, but in our coun- 

 try represented only by this single leaf, the Myrsinese. Convolvtilacea? 

 show two species of Porana, and the Apocynaceae a single species of Apo- 

 cynophyllum. 1 Oleacea- have a flowering branch of Olea and eight species 

 of Fraxinus, one regarded as identical with a European Tertiary plant. 



The apetalous angiosperms show a great variety of forms at Florissant, 

 and among them many are referred to species from foreign Tertiaries. A 

 species of Banksia and seven of Lomatia represent the Proteaceae; a species 

 of Pimelia the Thymelaceae ; one of Santalumthe Santalaceae, Urticacese 

 are the most numerous of all plants ; four species of Ulmus occur, one 

 found also in the European Tertiaries; another formerly thought to be iden- 

 tical with a second European species but now regarded as distinct, and two 

 others, one of them found also in western Colorado ; of Celtis there is one 

 species, whose leaves have a close affinity to the existing C. occidentalis and 

 its Texan variety ; two species of Ficus are identical with European species ; 

 but the mass of specimens nearly or quite one-half of all that have been 

 brought from this locality represent species of Planera; two species only 

 occur, one identical with a European form; the other known only from Flo- 

 rissant and the White River, and in the former very variable; Lesquereux 



1 In the text of his last report Lesquereux refers this to Alkali, Wyomiug, but iu his tabl" to Florin 

 saut. 



