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HIRAEA COSTARICENSIS AND H. POLYANTHA, TWO NEW SPECIES OF MALPIGHIACEAE, AND CIRCUMSCRIPTION OF H. QUAPARA AND H. SMILACINA

Published online by Cambridge University Press:  18 March 2019

C. Anderson
C. Anderson*
Affiliation:
University of Michigan Herbarium, 3600 Varsity Drive, Ann Arbor, MI 48108, USA. E-mail: chra@umich.edu
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Abstract

Two new species of Malpighiaceae are proposed: Hiraea costaricensis C.E.Anderson and H. polyantha C.E.Anderson. Hiraea costaricensis is characterised by the presence of basifixed hairs on the stems and leaves; H. polyantha, of Colombia, is distinctive in its large inflorescences, composed of c.100 flowers. Collections of the novelties had been associated with Hiraea smilacina Standl., a species that traditionally had been thought conspecific with H. quapara (Aubl.) Sprague; they are immediately separated by their fruits. In Hiraea smilacina the schizocarps break into three butterfly-shaped samaras, as is typical for the genus. The fruit of Hiraea quapara is spherical, composed of three mericarps covered by a network of reduced winglets. Hiraea smilacina is found from southern Mexico through Central America, except El Salvador and Nicaragua, and has been collected also in Colombia and Ecuador. Hiraea quapara is known mainly from French Guiana, with one collection from adjacent Suriname and two from Amapá, Brazil. All taxa are fully described and illustrated.

Keywords

Central AmericaHiraeaMalpighiaceaeMexiconorthern South America
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Articles
Information
Edinburgh Journal of Botany , Volume 76 , Issue 2 , July 2019 , pp. 269 - 284
Copyright
© Trustees of the Royal Botanic Garden Edinburgh (2019) 

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