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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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