304 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 9, No. 3 



Serrania Paru, Rio Paru 2 Carlo Asisa, Rio Ventuari, Amazonas, Venezuela, Feb- 

 ruary 12, 1951, R. S. Cowan & J. J. Wurdack 31417. 



The species is also represented from this region by number 31262, 1-4 rosettes per 

 caudex, basal half of central leaves rose-colored, frequent in open rocky sabanitas along 

 West Rim, cumbre at 2000 m alt.; and by number 31358, flowers yellow, interior leaves 

 basally pink, apically red-green, occasional along West Rim, cumbre at 2000 m alt. 



An unnumbered collection of the species was made in this locality by K. D. Phelps 

 and C. B. Hitchock on February 11, 1949. 



13. Navia involucrata L. B. Smith, sp. nov. Fig. 37 



Humilis; foliis multis, 17 cm longis, vaginis late ovatis, brevibus, brunneis, 

 laminis anguste triangularibus, acuminatis, pungentibus, 18 mm latis, dense ser- 

 rulatis, concoloribus, supra dense minuteque albo-flocculosis 5 subtus mox gla- 

 bris; scapo gracili, 20-25 mm longo, nudo; inflorescentia hemisphaerica, 2-3 cm 

 diametro; bracteis exterioribus e base late ovata acuminatis, serrulatis, crasse 

 coriaceis, ex sicco flavis, inflorescentiam involucrantibus longe superantibus et 

 fere omnino obtegentibus; bracteis florigeris lanceolatis, acutis, sepala subae- 

 quantibus, integris, parte superiore incrassata, minute lepidota; pedicellis bre- 

 vibus; sepalis liberis, lanceolatis, acutis, 14 mm longis, apice lepidotis s poste- 

 rioribus carinatis, basi anguste alatis, apice obscure dentatis; petalis aureis, 

 stamina subaequantibus; ovario supero. 



TYPE: flowers yellow, frequent along cumbre of West Rim at 2000 m alt., Ser- 

 rania Paru, Rio Paru, Cano Asisa, Rio Ventuari, Amazonas, Venezuela, February 

 7, 1951, Cowan & Wurdack 31359. 



Number 31360 is fruiting material of this species from the same place, and K. D. 

 Phelps and C. B. Hitchcock 527 is immature. 



14. Navia nubicola L. B. Smith, sp. nov. Fig. 38. 



Breviter caulescens; caule simplici; foliis ex comparatione paucis, ad 38 cm 

 longis, vaginis parvis, late ovatis, laminis linearibus, acuminatis, basi attenua- 

 tis, 16 mm latis, ex sicco tenuibus, subdense serrulatis, linea mediana pallida 

 pictis, supra glabris, subtus dense adpresseque cinereo-lepidotis; inflorescentia 

 nidulante, globosa sed subpauciflora, 20-25 mm diametro, simplici; bracteis ex- 

 terioribus subfoliaceis, inflorescentiam superantibus; bracteis florigeris ellipti- 

 cis, sepala superantibus, integris, membranaceis, apice dense lepidotis; floribus 

 subsessilibus; sepalis liberis, lanceolatis, late acutis, 14 mm longis, apice in- 

 flexis et dense lepidotis, membranaceis, lateralibus anguste carinatis; petalis 

 albis; ovario supero; capsula ellipsoidea, rostro brevi excluso 5 mm longa. 



TYPE: terrestrial, flowers white, locally abundant in slope forest between 

 Camps 2 and 3 at 200-500 m alt., Cerro de la Neblina, Rio Yatua, Amazonas, 

 Venezuela, January 29, 1954, B. Maguire, J. J. Wurdack & G. S. Bunting 37392. 



The species is further represented by numbers 37382 and 36801 from the vicinity of 

 the type locality. 



15. Navia lanigera L. B. Smith, sp. nov. Fig.- 39. 



Imperfecte solum cognita, verisimiliter caulescens; laminis foliorum angus- 



Explanation of figures 37-41 



FIGS. 37-41. Navia. FIG. 37. N. involucrata {Cowan & Wurdack 31359). a, apex of 

 leaf, X 1; b, margin of leaf, x 5; c, inflorescence , X %\ d, flower, x 1. FIG. 38. N. nubi- 

 cola. a, habit, x %; b, part of leaf, x 1; c, floral bract, x 1; d, sepals, X 1. FIG. 39. N. 

 lanigera (Maguire, Phelps, Hitchcock & Budowski 31794). a, inflorescence, X 1; b, floral 

 bract, x 2; c, posterior sepals, X 2; d, fruit, x 2. FIG. 40. N. pulvinata (Maguire & Ma- 

 guire 29111). a, leaf, x 1; b, part of leaf, x 5; c, outer bract of inflorescence, X 1; d, 

 flower, x 1. FIG. 41. N. saxicola (Maguire, Cowan & Wurdack 30680). a, base of leaf, X 

 1; b, part of leaf, x 5; c, inflorescence, x 1; d, floral bract, x 5; e, posterior sepal, x 5. 



