First report of Arceuthobium hondurense and Sruthanthus deppeanus in Nicaragua.

The Honduran dwarf mistletoe, Arceuthobium hondurense Hawksw. & Wiens (Viscaceae), is one of the rarest dwarf mistletoes known in Central America (1,2). It is only known from four general areas in Honduras, but has also been reported from three locations in southern Mexico (2,3). At one time, A. hondurense was thought to be in danger of extinction (1). During March 2006, we found three new populations of this rare dwarf mistletoe in the Cordillera Dipilto in northern Nicaragua (Department Nueva Segovia). One population was approximately 11 km northeast of San Fernando (13°44′55″N, 86°19′07″W; elevation 1,130 m), the second population was approximately 9 km north of Mozonte (13°44′09″N, 86°24′54″W; elevation 1,415 m), and the third population was approximately 6 km southwest of Depilto (13°42′51″N, 86°32′22″W; elevation 1,340 m). Honduran dwarf mistletoe was parasitizing Pinus tecunumanii Equiluz & J.P. Perry at each of these locations, and at the Mozonte population, it was also infecting P. oocarpa Schied...