1963] 



BOTANY OF THE GUAYANA HIGHLANDS PART V 



111 



in the leaves of 0. perseiphylla to those found in some members of the genus 

 Persea, hence the name. 



Ocotea laticostata C. K. Allen, sp. nov. Fig. 55. 



Arbor ad 10 m alta, gemmis ut videtur robustis olivaceo-pubescentibus ± 

 obtusis, ramulis robustis valde angulatis minute adpresseque brunneo-pubes- 

 eentibus aliquantum ' 'zig-zag." Folia alternata, ut videtur reflexa, petiolis 

 robustis minute adpresseque brunneo-pubescentibus glabrescentibus valde canalic- 

 ulars, conspicue undulato-alatis, ad 15 mm longis et 4-5 mm latis, laminis 

 utrinque glabris, supra ad basim costa et subtus ad basim costa venisque exceptis, 

 percoriaceis, supra olivaceo-viridescentibus subtus magis brunneis, margine prae- 

 cipue ad basim recurvatis et petiolo undulato-decurrenti, ellipticis vel ovato- 

 ellipticis, 23-25 cm longis et 9-11.5 cm latis, ad basim rotundatis ad apicem 

 obtusis vel abrupte acutis, penninerviis, costa supra plana subtus valde elevata, 

 ad basim 4 mm lata, nervis plerumque 8-9-paribus supra obscuris subtus elevatis 

 adscendenti-arcuatis, ad angulo 45° divergentibus, rete venularum supra incon- 

 spicuo subtus minuto obscuroque. Infructescentia axillaris et subterminalis, 

 robusta, leviter brunnescens, glabrescens, plus minusve stricte paniculata, ad 



17 cm longa, rhachidibus valde striatis. Fructus ut videtur immaturus, in sicco 

 olivaceus, ellipsoideus, apiculatus, ad 10 X 8 mm, cupula cyathiformi 7-10 mm 

 longa, 10 mm diam., et 5 mm alt., margine ± plana vel saepe obscure minuteque 

 denticulata, subsessili vel pedicello leviter obconico subtenta, Inflorescentia et 

 flores ignoti. 



Type. Tree 10 m, stems angled, leaves coriaceous, in Camp Culebra above 

 Indian village of Culebra, Cerro Duida, Amazonas, Venezuela, 1000-1100 m, 



18 Nov 1950, Bassett Maguire, R. S. Cowan & John J. Wurdack 29514 (holotype, 

 fr. NY). 



A species seemingly belonging to Ocotea, but the relationship within the genus 

 is uncertain without flowering material. The species may be myrmecophyllous. 

 Distribution. Known only from the type. 



Ocotea or Nectandra sp. 



Tree 60 ft tall, leaves coriaceous, deep green above, paler green below with 

 rose-red midrib frequently colored, rachis coral-red, fruiting calyx coral-red, 

 verrucose, 9 mm in diam., fruit broadly oblong, becoming blackish, up to 1.5 cm 

 long and 1.5 broad, between Bluff Camp and low promontory north of Bluff 

 Camp, along west-facing portion of Chimanta-tepm (Torono-tepui), Bolivar, 

 Venezuela, 1600-1700 m, 5 Jan 1953, Steyermark 75686 (fr. NY). 



Ocotea or Nectandra sp. 



Arbol de 30 m de alto, esbelto, elegante, copa redonda piramidal, madera 

 amarillo grisacea, hojas pequenas, frutos pequenos, selva pluvial o sabana natural, 

 region de los rios, Icabaru, Hacha y Cordillera sin nombre a 280° de las cabeceras 

 de Rio Hacha, Bolivar, Venezuela, 450-850 m, 2 Jan 1956, Bernardi 2745 

 (y.fr., fr.NY). 



The above numbers are in fruit only. Though they are obviously not con- 

 specific, both may belong to the Ocotea cuprea-oblonga complex. Without flower- 

 ing material, however, they cannot be placed with certainty to genus or species. 



