Diploicin, a chlorinated depsidone related to orcinol, previously not reported to be present in Pannariaceae, was found in Parmelia dimorphum and leprolomin, a diaryl ether previously described (4), was isolated from P. dimorphum and Psoroma pallidum. All these compounds were characterized from 'H-nmr, ms, and ir spectral data and by comparison with authentic samples. In continuation of chemotaxonomic studies of Iranian wild plants of the Papaveraceae (1-11), alkaloid content of Glaucium corniculatum (L.) Rudolph. subspecies refractum (NAB) Cullen, population Pol-Dokhtar was studied. This species is a perennial wild plant growing in an area near Pol-Dokhtar Tunnel on the highway from Mianeh to Zinjan at an altitude of 1600 meters. The height of the plant is about 49-95 cm. It blooms from April to August, has large (up to 5 cm) yellowish-orange flowers, and long (10-25 cm) seed pods. Some of the alkaloids isolated from this plant population are common with those reported in our previous work on this species (10). Chemotaxonomic correlation of this species is under investigation.