Navia delascionis L.B.Sm., Steyerm. & H.Rob.[as Navia delascionis L.B. Sm., Steyerm. & H. Rob.,]

Diagnose: —Caulescens; caule erecto, 8 cm alto. Folia 10cm longa, vaginis parvis, atris; laminis anguste triangularibus, 3 mm latis, albo-ciIiatis, alibi mox glabris, laxe serrulatis, interioribus ad basin versus albis Inflorescentia terminalis, sessilis, anguste ovoidea, 2 cm alta, atrocastanea; bracteis primariis subfoliaceis, inflorescentiam superantibus. Bracteae florigerae ellipticae, quam sepalis paulo breviores, membranaceae, rubro-brunneae. Sepala libera, posterioribus linearibus, obtusis, 10mm longis; ovario supero,

Observations: —Leaf anatomy. Vascular bundles covered by chlorenchyma adaxially and abaxially; the innermost adaxial water storage cells sporadically resiniferous; subepidermal cells mostly unistratose, abaxially mostly resiniferous substomatal pores nearly occluded, transversely elongate, halteriform; abaxial scales not evident.
The new species seems rather distinct among those with nearly occluded substomatal pores by the broad covering of chlorenchyma adaxially over the vascular bundles. Of the species placed close in the above key, relationship is perhaps closest to some from western Bolivar such as Navia lasiantha and N. cardonae.