As presently interpreted Phoradendron sec tion Pau cifiorae consists of 15 spec ies. These mistletoes parasitize primarily conifers. We describe seven new spec ies . make sta tus changes for four species, and provide information on the hosts and di str ibution of all members of the sec tion. New species described are: Phoradendron abietinurn Wiens, on Abies durangen si s in Chihuahua, Durango, ...

Fungi belonging to the genus Geastrum are known as earth stars due to different layers with specific alignment in fruit-bodies. In this paper four species of the genus Geastrum viz. G. coronatum, G. rufescens, G. saccatum and G. schmidelii were reported as new for Iran. Previously reported specimen, G. corollinum (as G. recolligens)was newly collected and was studied in details. Newly reported ...

Myoglobin was purified from skeletal muscle of the pika (Ochotona princeps) and its primary structure was determined. This sequence was added to the set of 64 already known vertebrate myoglobin sequences and used to evaluate the phylogenetic position of the pika among other mammals, using a computerized search procedure based on maximum parsimony criteria. The pika is clearly related to the rab...