Lectotypification of Artemisia variabilis Ten. (Compositae)

Lectotypification of Linnaean names in Pedicularis (Orobanchaceae)

Ten Linnaean names of Pedicularis (Orobanchaceae) are lectotypified: P. comosa, P. flammea, P. hirsuta, P. incarnata, P. lapponica, P. resupinata, P. rostrata, P. tristis, P. tuberosa and P. verticillata. Lectotypes are designated from the Linnaean herbarium at LINN. The type choices made here maintain the present usage of the corresponding Linnaean names for ten Pedicularis species.

Detection of Sesquiterpene Lactones in Ten Artemisia Species Population of Khorasan Provinces

Objective During the last three decades sesquiterpenoid lactones have emerged as one of the largest groups of plant products with over 3000 naturally occurring substances known. The genus Artemisia characteristically contains this biologically active type of secondary metabolites. With respect to increasing interest in the cytotoxic, antibiotic, phototoxic and antineoplastic activities of sesq...

Wood Anatomy of Vernonieae (Compositae)

Systematics of Isocarpha (Compositae: Eupatorieae)

Isocarpha comprises five species ranging from southern Texas and the Bahamas to northern Peru and northeastern Brazil. The genus belongs in Eupatorieae rather than Heliantheae, but structure of the head of Isocarpha with its elongate, chaffy receptacle is anomalous within Eupatorieae. An hypothesis is presented suggesting the evolutionary derivation of this type of head through formation of flo...

Wood Anatomy of Eupatorieae (Compositae)