M. Socorro González Elizondo

Three New Species of Eleocharis (Cyperaceae) from the Andean Páramos of Colombia and Ecuador

ABSTRACT Three new closely related species of Eleocharis R. Brown (Cyperaceae) from Andean páramos are described from Colombia: E. fassettii S. González & P. M. Peterson, E. cuatrecasii S. González & P. M. Peterson, and E. moraosejoana S. González, C. Ulloa & P. M. Jørgensen. They all belong to Eleocharis subgen. Eleocharis, sect. Eleocharis, and differ from related species by a combination of characters, among which are the thin, loose upper sheath apices and the unusual achene shape that is conspicuously tapered toward the base and apex.

Distribution of Dwarf Mistletoes (Arceuthobium spp., Viscaceae) in Durango, Mexico

ABSTRACT The dwarf mistletoes (Arceuthobium spp., Viscaceae) are an ecologically and economically important group of hemi-parasitic flowering plants that parasitize members of the Pinaceae in both the Old and New Worlds. There are two areas of maximum diversity for the dwarf mistletoes: northern California and Durango, Mexico. Here we provide additional information on the distribution of dwarf mistletoes in Durango based on field observations and herbarium collections. This information supplements data provided in a monograph on Arceuthobium published in 1996. Needed research on the dwarf mistletoes in Durango is also discussed. Key words: Arceuthobium, distribution, dwarf mistletoes, Durango, México.