4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 56 



Type in the U. S. National Herbarium, no. 676223 ; collected from 

 the trunk of a small forest tree in humid forest along the upper Cal- 

 dera River, near Camp I, Holcomb's trail, above El Boquete, Chiriqui, 

 Panama, altitude about 1600 meters, March 24, 1911, by William R. 

 Maxon (no. 5712). 



L. Watsonianum is of the section Selago and the 

 group of L. linifolium, but is not closely related to 

 any North American species. The leaves are 

 harsh to the touch, and the branches remarkably 

 rigid for so slender a plant. The irregular ex- 

 panded bases of the sporophyls, an unusual fea- 

 ture for this group of species, are indicated in the 

 text-figure herewith. 



Dedicated to H. J. Watson, Esq., a resident of 

 Fig. i.-Bases of -^1 Boquete, who during the last twenty years not 

 Sporophyls. only has been of very great assistance to natural- 



ists visiting the mountain region of Chiriqui, but has himself made 

 extensive zoological collections. I 



I 



