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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[Vol. 9, No. 3 



ris ellipticis, sepala subaequantibus, integris, apice subulato-incrassatis, alibi 

 tenuibus; sepalis linearibus, acutis s 12 mm longis, posterioribus connatis, an- 

 guste alato-carinatis; petalis albis; ovario supero. 



TYPE: abundant on dry rocks at 1500 m alt., Cerro Coro-Coro, Serranla Yutaje, 

 Rio Manapiare, Amazonas, Venezuela, March 2, 1953 s 3. & C. K. Maguire 35437. 



Number 35496 from the same locality is also this species. 



31. Navia immersa L. B. Smith, sp. nov. Fig. 55. 



Verisimiliter humilis; caule ignoto; foliis plurimis, fere 2 dm longis, vaginis 

 suborbicularibus, 15 mm longis, subhyalinis, glabris, laminis linearibus, acumi- 

 natis, basi 3 mm latis, minutissime subdenseque uncinato-serrulatis, crassis, 

 coriaceis, supra glabris, subtus adpresse albo-lepidotis; inflorescentia sessili, 

 in centro foliorum immersa, verisimiliter simplici; bracteis exterioribus e foliis 

 gradatim reductis; bracteis florigeris linearibus, acutis, tenuibus, serrulatis, 

 apice incrassatis; pedicellis brevibus; sepalis liberis, linearibus, acutis, 30 mm 

 longis, apice paulo dilatatis serrulatisque, tenuibus, glabris; petalis stamini- 

 busque ignotis; ovario 6 mm longo, robusto, parte infera sterili; seminibus pau- 

 cis. 



TYPE: ftequent on South Escarpment face at 1400 m alt., Cerro Huachamacari, 

 Rio Cunucunuma, Amazonas, Venezuela, December 18, 1950 s B. Maguire, R. S. 

 Cowan & J. J. Wurdack 30325. 



32. Navia aloifolia L. B. Smith, sp. nov. Fig. 56. 



Caulescens, saepe decumbens; caule simplici vel paucirarroso, 3-15 dm 

 longo, ca. 7 mm diametro, in partibus apicalibus ad 3 dm longis foliis densissime 

 vestito, alibi denudato; foliis, juvenilibus dissite arachnoideis, vaginis erectis, 

 late ovatis s 1 cm longis, ex sicco albis, laminis recurvatis, anguste triangulari- 

 bus, acuminatis, 6 cm longis, 9 mm latis, rigidis, pungentibus, utrinque viridibus, 

 margine spinis gracilibus atris antrorsis 1.5 mm longis subdense armatis; scapo 

 nullo; inflorescentiis sessilibus s celerrime ramis auctis sympodialiter superatis 

 pseudo-axillaribus, dense globosis, paucifloris; bracteis florigeris subfoliaceis, 

 flores superantibus; floribus subsessilibus; sepalis cochleari-imbricatis, acutis, 

 9 mm longis, posterioribus anguste alato-carinatis; petalis aureis; ovario plus 

 quam % infero; seminibus nudis. 



TYPE: common near Cumbre Camp, summit at 1700 m alt., Cerro de laNeblina, 

 Rio Yatua, Amazonas, Venezuela, January 10, 1954, B. Maguire, /. /. Wurdack & 

 G. 5. Bunting 37146, 



Further numbers of this species from Cerro de Neblina are: 37020, frequent along 

 west escarpment edge; 37098, abundant along escarpment west of Cumbre Camp; 37170, 

 dominant plant of open areas 4-8 km north of Cumbre Camp; and 37288, forming cushions 

 on west escarpment edge northwest of Cumbre Camp. 



33. Navia parvula L. B. Smith, sp. nov. Fig. 57. 



Pulvinata; caule brevi sed ramoso, 5 mm diametro; foliis multis, 2-5 cm lon- 

 gis, lepidibus linearibus albis dissite vestitis, mox glabris, vaginis late triangu- 

 laribus, 7 mm longis, laminis recurvatis, linearibus, acuminatis, basi haud atten- 

 uatis, 3-4 mm latis, laxe serrulatis; inflorescentia nidulante, pauciflora, 7 mm 

 diametro; bracteis exterioribus foliaceis sed reductis; bracteis florigeris e late 

 ovato acuminatis, sepala superantibus, apice serrulatis; floribus subsessilibus; 

 sepalis liberis, triangularibus, acutis, 7 mm longis; petalis staminibusque igno- 

 tis; ovario l / 2 infero; capsula subglobosa, rostro excepto 4 mm longa; seminibus 

 paucis, nudis, nigris, tuberculato-sulcatis. 



TYPE: locally frequent in colonies on dry rock outcrops on south side of Cum- 

 bre Camp carlo toward Caho Grande at 1500-1700 m alt., Cerro de la Neblina, Rio 



