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Manual de Plantas de Costa Rica

Main | Family List (MO) | Family List (INBio) | Cutting Edge
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The Cutting Edge

Volume XXIII, Number 3, July 2016

News and Notes | Leaps and Bounds | Germane Literature | Season's Pick | Annotate your copy

MELASTOMATACEAE.; The recent discovery by Mario Blanco (CR) of Meriania grandiflora (Standl.) Almeda on the Pacific slope of Costa Rica (see under "Leaps and Bounds," this issue) transcends a mere range extension, as Mario happened to note that his new material had 6-merous flowers and fruits (rather than 5-merous, as characteristic of the entire genus according to the Manual Melastomataceae treatment).; Curious about this, Mario investigated and found that floral merosity had never been reported for M. grandiflora itself, even in the protologue of Centronia grandiflora Standl.; He asked us to examine the material at MO in this regard, which we did; and of the half dozen or so specimens (all Panamanian) for which merosity could easily be determined (without destroying flowers or fruits), 6-mery was indeed the clear and consistent condition.; This, of course, requires mild tweaks to the Manual description and discussion for the genus Meriania, as well as the following revamping of the first lead of couplet 20 in the key to genera:; "Fls. generalmente 5(6)-meras."; That should do it!

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