Abstract
Three Mesoamerican species, most recently assigned to Psidium, are not species of that genus, nor can they be accommodated realistically in any existing genus of the Myrtaceae. Chamguava is described to contain them. This new genus is a member of the Campomanesia complex of genera, probably most closely related to Pimenta and Blepharocalyx. It is distinguished from them by a subpeltate placenta and by shortly peduncled, uniflorous inflorescences that are grouped together in umbel-like clusters. The following new combinations are made: C. gentlei, C. gentlei var. apodantha, C. musarum, and C. schippii. In preparation of the treatment of the Myr- taceae for the Flora of Guatemala (McVaugh 1963b), McVaugh (1963a) transferred five Cen- tral American species of Eugenia to Psidium. He was correct in believing them to be a closely related complex belonging to the subtribe Myr- tinae but incorrect in placing them in Psidium. As discussed below, Psidium differs in embryo and seed coat structure. The group cannot be accommodated in any existing genus of Myr- tinae, thus a new genus, Chamguava, is here de- scribed. Chamguava appears to have its closest relatives in Pimenta and Blepharocalyx but is dis- tinguished from both of these by characters of the inflorescence and, in most cases, the pla- centa.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
