1963] 



BOTANY OF THE GUAYANA HIGHLANDS PART V 



41 



u 



28 a b 



27 



a 



Fig. 26. Aechmea pallida {Tillett $• Boyan 44859). a, apex of leaf, x 0.5; b, inflorescence, 

 X 0.5; c, sepal, X 1. Fig. 27. Navia gracilis (Wurdack # Adderley 43275). a, branch of 

 inflorescence, X 0.5; b, floral bract and flower, X 1 ; c, anterior sepal, X 2; d, posterior sepal, 

 X 2. Fig. 28. Bromelia tubulosa {WurdacTc $ Adderley 43525). a and b, opposite sides of 

 calyx, X 1. 



brown at base within, strongly cupped and incurved above the base ; inflorescence 

 bracts white overlaid with pink near tip, margins blue with white band between 

 pink and blue, tip white ; young fruit white with greenish-blue tip ; only one 

 seen ; wet forest above first cliffs along trail from Porkknocker Camp 3, at fork 

 of Partang River, to Merume Mountain, 9 Jul 1960, S. S. & C. L. Tillett & 

 R. Boyan 44859 (holotype NY) . 



PIPERACEAE 



Piper wurdackii Yuncker, sp. nov. 



Frutex parvus, internodiis superis glanduloso-granulosis, foliis late ellipticis 

 apice abrupte arcteque plus minusve falcatim acuminatis basi subaequilateraliter 

 rotundatis cordulatis supra glabris subtus ad venas plus minusve adpresse 



9 By T. G. Yuncker. 



