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	The Cutting Edge
	Volume XXI, Number 2, April 2014
	
	News and Notes |  
	Leaps and Bounds | Germane Literature |
	Season's Pick 
	
	
	 BORAGINACEAE. Santamaría & González 4679, from  800–1000 m elevation in the foothills of Volcán Turrialba (Atlantic slope of  the Cordillera Central), represents Tournefortia  multiflora J. S. Mill., a sp. (with very odd, asclepioid-like floral  morphology) heretofore believed endemic to Panama. The initial determination by Manual co-PI Barry Hammel was confirmed, via a  scanned image, by Jim Miller (MO)  himself (who would now class this sp. in Heliotropiaceae). 
    EUPHORBIACEAE. Manual  collaborator Armando Estrada (CR)  has opened our eyes to the presence in Costa Rica of Euphorbia lancifolia Schltdl., a sp. that was not mentioned in the  Manual Euphorbiaceae treatment (2010) by José  González (LSCR) nor, for that matter, in the Flora costaricensis account of the family (1995). Though apparently native at least from  southern Mexico to El Salvador and Honduras, E. lancifolia is also known to be cultivated, and there are South  American collections in TROPICOS. The  status (native or introduced) of the Costa Rican populations is unclear, but  Armando reports that the sp. is relatively common in the basin of the Río  Torres (Guadalupe de Goicoechea; Sabanilla de Montes de Oca), on the Pacific  slope of the Valle Central. Moreover, he  found a 1951 collection from the San Carlos region (León 3582) in the CR herbarium that had been determined originally  as E. lancifolia. In the Flora  of Guatemala, Euphorbia lancifolia keys next to E. oerstediana (Klotzsch  & Garcke) Boiss., from which is distinguished by its leaf-blades that are  acute (vs. obtuse to rounded) at the base and "fleshy" (vs.  "thin"). 
    HYDROCHARITACEAE. The submerged  aquatic Egeria densa Planch., native  to South America, was treated in full in Manual Vol. 2 (2003), albeit on a  highly tenuous basis: a single  collection from a pond on the campus of the Centro Universitario de San Ramón. Now we have much more solid evidence for the  status of this sp. as a bona fide member of the Costa Rican flora, courtesy of  Manual co-PI Barry Hammel, who  recently discovered a large and well-established population clogging irrigation  canals in the headwaters of Quebrada Ojo de Agua, at ca. 815 m elevation near  the town of Ciruelas, on the Pacific slope of the Valle Central. Barry's collection (Hammel  et al. 26697), in full flower, requires modification of the elevational  range of E. densa (to "800–1050  m") and allows us, for the first time, to specify a flowering phenology  ("mar."). 
    RUBIACEAE. A batch of  intriguing material gathered recently by Manual co-PI Nelson Zamora (INB) from the Refugio Nacional de Vida Silvestre  Mixto Maquenque, on the Llanura de San Carlos, included Faramea tamberlikiana Müll. Arg. subsp. sessifolia (P. H. Allen) C. M. Taylor, otherwise known in Costa  Rica (sp. and subsp. alike) only from the Pacific slope. And in a very similar vein... 
	
    URTICACEAE. Zamora et al. 6587, a sterile  specimen from the Cutris region, far out on the Llanura de San Carlos, has  finally been determined (after much deliberation) as Coussapoa asperifolia Trécul, previously believed to reach its  northernmost limit on the Península de Osa.  And yes, Virginia, Coussapoa will be treated under Urticaceae in the Manual. 
 
    
       
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