182 



Flora Telluriaxa. Part I. 1837 (first quarter). 



II. 1837 (first quarter). 



III. 1837 (November or December). 



IV. 1838 (near middle of year). 

 New York Botanical Garden. 



DESCRIPTION OF A NEW TERTIARY FOSSIL 

 FLOWER FROM FLORISSANT, COLORADO 



By Arthur Hollick 



Among the many interesting specimens discovered by Profes- 

 sor Theo. D. A. Cockerell in the Tertiary plant beds at FIoris.sant, 

 Colorado, recently transmitted to me for critical examination, is 

 one which represents a more or less well-preserved flower. Some 

 of its parts are obscure or missing, but those that are preserved 



show the general characters of the 

 ^^C'--: "-> filaments, anthers, and petals, and, 



to a lesser extent, those of the 

 caly.x also. 



It is so seldom that the delicate 

 ti.ssues of petals, filaments and 

 anthers are preserved as fossils, 

 and the known examples of any 

 such are so few, that this speci- 

 men is of unusual interest and is 

 worthy of description even though 

 the description must necessarily be 

 incomplete. 



Fig. I. Photograph of Plienanthera 

 petalifera, i J^ times natural size. 



Phenanthera petalifera g&\\. et sp. nov. 



Remains consisting of more or less dismembered parts of a 

 small pedunculate, choripetalous flower, which may be allied 

 either to the family Caryophyllaceae or to the order Rosales or 

 to the Myrtales. 



Calyx-tube about 4 mm. wide and 5 mm. long, urn-shaped, 4 

 (?)-divided above the middle, the divisions bearing spatulate ap- 

 pendages (?). Petals spatulate, 2-3 times longer than the 

 divisions of the calyx-tube and alternate with them. Stamens 8, 



