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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 2, April 2016

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

FABACEAE.  Manual co-PI Barry Hammel has just stumbled upon an error affecting most of the spp. in the genus Pithecellobium (see Manual Vol. 5, 2010):  to wit, the phrase "folíolos 2 pares por pinna" is often used erroneously (in both descriptions and discussions) to describe leaves that, in actuality, have just two leaflets (not two pairs) per pinna.  We have confirmed this error from material at MO, and it has been acknowledged by Fabaceae contributor and co-PI Nelson Zamora, who advises that the phrase "folíolos 2 pares por pinna" be replaced with "folíolos 2 por pinna" in the descriptions of Pithecellobium furcatum Benth., P. hymenaeifolium (Humb. & Bonpl. ex Willd.) Benth., P. johansenii Standl., P. lanceolatum (Humb. & Bonpl. ex Willd.) Benth., and P. unguis-cati (L.) Benth.  He also provides the following patch for the final couplet of the key to spp.:

6

Folíolos obtusos o redondeados en el ápice; bosque seco y húmedo, 0–250+ m, vert. Pac....P. unguis-cati

6' Folíolos mucronatos a largamente acuminados en el ápice; bosque muy húmedo, ca. 600 m, vert. Carib....P. sp. A



As far as our spot-checking has revealed, this error appears limited to Pithecellobium and is (mercifully!) not pervasive throughout the Manual Fabaceae treatment.  The wonder of it all is that it took more than five years after the volume was published for anyone to find these errors, and it was one of us who found them!  Does anyone who works with Costa Rican plants ever look at the Manual?

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