Rubiacearum americanarum magna hama pars II. New and newly circumscribed taxa of Guettarda (Guettardeae)

The new species Guettarda davidseorum Lorence and G. subcapitata C. M. Tayl or, here described and illustrated, are known from a moist forest region in Belize and dry forest regions from southern Mexico to Nicaragua, respectiv ely Guettarda davidseorum is similar in aspect to C. deamii Standley, and G . subcapitata has been previously confused with G. macrosperma Donnell Smit h. Also considered here are distinctive patterns of variation in the wide-r anging variable species G. crispiflora Vahl, which support the recognition of five subspecies with generally allopatric geographic distributions; seve ral of these subspecies differ from those that have been previously circums cribed.