538 T. D. A. Cockerell — Descriptions of Tertiary Plants. 



Fungi. 



Geaster florissantensis sp. nov. Fig. 1. 

 Diameter of " star " about 56 mm , the segments about eight 



mm 



in number, five being visible, variable in form, the largest 20 : 

 long and about 11J broad at base, but one next to it only about 

 7 broad ; color dark brown, texture apparently leathery, with- 

 out any sign, of venation. 



Florissant, at a new station on the hillside not far from 20 

 ( W. P. Cockerell, 1908). It occurs on a slab with numerous 

 remains of Typha lesquereuxi Ckll., Ulmus hillice Lx., and 

 other plants. The appearance is exactly that of a modern 

 Geaster in the expanded condition, and the irregularity of the 

 segments is unlike that of any calyx known to me. Geaster 

 is, of course, common in Colorado to-day. 



Gymnosperms. ' 

 Pinus sturgisi sp. nov. Fig. 2. 



Leaves in bundles of threes, apparently entire-margined, 

 about I75 mm long and lf mra broad, very straight, sharp-pointed. 

 Two fibrovascular bundles are very distinct, being preserved 

 as white lines. In all respects, the plant agrees very closely 

 with the living P. tceda L., of the Eastern and Southern 

 States. 



Florissant ; the type from Station 13 B {Miss Gertrude 

 Darling, 1908), but the species was also found, less well pre- 

 served, at various stations in 1907. The species is dedicated 

 to Dr. W. C. Sturgis, of the School of Forestry at Colorado 

 College, in recognition of his contributions to Colorado botany. 

 The fossil species of Pinus from Florissant must now be con- 

 sidered to be three in number at least, separable as follows : 



Leaves in bundles of five __ P. wheeleri Ckll. (doubtfully 



recorded as P. palceostrobus (Ett.) Heer, by Lesquereux). 



Leaves in bunches of three 1. 



1. Leaves about I75 mm long P. sturgisi Ckll. 



Leaves about 70 mm long P. hambachi Kirchner. 



I formerly sunk P. hamhachi under P. florissanti Lx., which 

 was based on a cone, but it must be restored, at least pro- 

 visionally. 



Heyderia C. Koch. 



This genus, once widespread, is restricted to the Pacific 

 coast region of North America {Heyderia decurrens (Torrey) 

 C. Koch) and China {H. macrolepis = Libocedrus macrole-pis 

 Benth. apd Hook. = Calocedrus macrolepis Kurz). At 



