298 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



XVol. 9, No. 3 



52. Ovary almost wholly inferior; sepals narrowly triangular, acuminate, 



entire, auricled at the base. Colombia: Amazonas-Vaupes. 



N. fontoides. 



51. Sepals 7-15 mm long. 



53. Leaf-blades 9 mm wide; stems normally elongate. 32. N. aloifolia. 

 53. Leaf-blades 3-6 mm wide; stems short. 



54. Leaves 2-5 cm long. 33. N. parvula. 



54. Leaves 14 cm long. 34. N. scopulorum. 



1. Navia lindmanioides L. B. Smith, sp. no v. Fig. 26. 



Humilis; foliis multis, ad 34 cm longis, inflorescentiam multo superantibus, 

 dense serrulatis, basi dissite minuteque albo-stellatis, mox glabris, vaginis par- 

 vis, suborbicularibus, brunneis, laminis linearibus, acuminatis, 15 mm latis; 

 scapo erecto, brevi, ca. 1.5 mm diametro, minute albo-stellato, bractea unica 

 subfoliacea paulo infra apicem aucto, alibi nudo; inflorescentia subdigitatim pa- 

 niculata, tripinnata, 9-12 cm longa, dense albo-stellata; bracteis primariis infi- 

 mis linearibus, serrulatis, quam ramis multo brevioribus, supremis ovatis quam 

 eis florigeris vix majoribus; ramis subpatentibus, pauciramosis, laxe florigeris; 

 bracteis florigeris late ovatis, acutis, 2 mm longis, tenuibus; pedicellis brevissi- 

 mis crassisque; floribus patentibus; sepalis cochleari-imbricatis, liberis, ob- 

 longo-ovatis, obtusis, 4 mm longis, tenuibus; petalis ellipticis, obtusis, 5 mm 

 longis, stamina aequantibus, albis; ovario supero, globoso, lepidoto; ovulis pau- 

 cis. 



TYPE: flowers white, frequent along base of escarpment at 1000 m alt., Cerro 

 Yapacana, Rib Orinoco, Amazonas, Venezuela, January 3 S 195 1 9 Maguire, R. 

 S. Cowan & }. J. Wurdack 30650. 



Number 30619 from the same locality is this species. The collectors note that 

 the leaves are asymmetrically arranged. 



2. Navia fluviatilis L. B. Smith, sp. nov. Fig. 27. 



Humilis, acaulis, verisimiliter annua, florifera 12-21" cm alta; foliis ca. 15 s 

 suberectis, ad 13 cm longis, graminiformibus, omnino inermibus, lepidibus minu- 

 tissimis dissite obtectis, vaginis ovatis, 8 mm longis, pallide brunneis, laminis 

 linearibus, acuminatis, planis, 5 mm latis; scapo erecto, gracillirro, quam foliis 

 multo brevioribus; scapi vaginis anguste lanceolatis, apice acuto incrassato ex- 

 cepto membranaceis, supremis quam internodiis brevioribus; inflorescentia sim- 

 plici, laxe racemosa, glabra; bracteis florigeris eis scapi similibus, quam pedi- 

 cellis duplo vel triplo brevioribus; pedicellis adscendentibus, gracillimis, 6-7 mm 

 longis; sepalis liberis, anguste oblongis, obtusis, 2.5 mm longis, subhyalinis, 

 juv€nilibus cochleari-imbricatis; petalis anguste ellipticis, obtusis, sepala paulo 

 superantibus, albis; staminibus inclusis; ovario supero; stylo gracili; capsuia 

 graciliter fusiformi, acuminata; seminibus angustis, fere vel omnino nudis, nigris. 



TYPE: locally frequent on exposed sandstone boulders in stream bed, 1000 m 

 alt., Membaru-Kurupung Trail, Pakaraima Mountains, British Guiana, October 29- 

 November 4, 1951, Maguire & D. B. Fanshawe 32360, 



3. Navia hohenbergioides L. B. Smith, sp. nov. Fig. 28. 



Florifera ad 4 m alta; caule erecto, 1 m alto, 3 cm diametro; foliis ultra 6 dm 

 longis, obscurissime dissiteque lepidotis, vaginis quam laminis laevioribus et 

 cum spinis pallidis sed vix distinctis, laminis linearibus, acuminatis, pungenti- 

 bus, 3 cm latis, nervatis, spinis atris sursum curvatis 2 mm longis laxe armatis; 

 scapo erecto, ca. 3 cm diametro, glabro; scapi bracteis strictis, dense imbricatis, 

 dense serratis, infimis anguste triangularibus, supremis lanceolatis; inflores- 

 centia ample laxeque tripinnatim paniculata, glabra; axi recto; bracteis primariis 



