heterophylla) , Douglas fir (Pseudotsuga taxifolia), Idaho white pine 

 (Pinus monticola), Sitka spruce (Picea sitchensis), and Monterey 

 cypress (Cupressus macrocarpa) are of original material restored for 

 exhibit by Curator Sella. During the year Curator Thieret obtained 

 fresh material of the following for use as bases for reproductions: 

 nutmeg and mace, allspice, varieties of Capsicum peppers, guavas, 

 anus (Tropaeolum tuberosum), arracachas (Arracacia xanthorrhiza) , 

 ullucus (Ullucus tuberosum), and ocas (Oxalis tuberosa). After 

 reinstallation the special exhibit on Dutch elm disease prepared by 

 Curator Thieret and Artist-Preparator Grove for display in Stanley 

 Field Hall (see page 35) will be placed on permanent exhibition in 

 Hall 26. A mural of the giant bromeliad Puya raimondii, the work 

 of E. John Pfiffner, Staff Artist, which was installed in Martin A. 

 and Carrie Ryerson Hall (Hall 29, Plant Life), shows this little- 

 known plant in its characteristic home high in the Bolivian Andes. 



Emil Sella, Curator of Exhibits in Botany, shows a branch of ponderosa pine that 

 he collected in Oregon and restored for installation in Charles F. Millspaugh Hall. 



51 



