302 



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



tis, acutis, 12-18 mm longis, nervatis, rubris, posterioribus anguste alato-carina- 

 tis, petalis staminibusque ignotis; ovario supero. 



TYPE: on rocks in scrub woodland, south escarpment slopes, Cerro Guanay, 

 1200-1800 m alt., Cano Guaviarito, Rio Manapiare, Rio Ventuari, Amazon as, Ven- 

 ezuela, February 4, 1951, B. Maguire, K. D. Phelps, C. B. Hitchcock & G. Bu- 

 dowski 31762, 



VENEZUELA: Amazonas: Cerro Yutaje: occasional in thickets near Camp Yutaje at 

 1300 m alt., February 8, 1953, B. & C. K. Maguire 35090. Frequent in shaded places 

 along cano or in woodland, along left fork of Carlo Yutaje at 1250 m February 12, 1953, 

 B. & C K. Maguire 35226. Frequent in left branch of Cano Yutaje at 1200 m alt., Febru- 

 ary 25, 1953, B. & C. K. Maguire 35416. 



In the material from Cerro Yutaje the minute linear white trichorres of the in- 

 florescence are much more persistent than in the type. 



11. Navia serrulata L. B. Smith, sp. nov. Fig. 35 



Habitus ignotus; foliis plurimis. 36 cm longis, vaginis late ellipticis, 2 cm 

 longis. quam laminis multo latioribus, apice brunneis serrulatisque. laminis line- 

 aribus, longe acuminatis, 5-6 mm latis. dense minuteque serrulatis, subtus dense 

 albo-lepidotis; scapo gracili, vaginas foliorum superante; inflorescentia myrian- 

 tha, verisimiliter simplex, crasse ovoidea, late obtusa, 25 mm longa, glabra; 

 bracteis exterioribus subfoliacei s, inflorescentiam involucrantibus et superanti- 

 bus; bracteis florigeris lanceolatis. acutis, quam sepalis paulo brevioribus, ser- 

 rulatis; pedicellis brevissimis; sepalis liberis, lanceolatis, acutis, 7-9 mm lon- 

 gis; petalis sepala vix superantibus; antheris exsertis, linearibus, 3 mm longis; 

 ovario supero. 



TYPE: bracts pinkish, flowers yellowish, frequent on northwest slopes at 800 

 m alt., Cerro Yapacana, Rio Orinoco, Amazonas, Venezuela, January 1, 1951$ B. 

 Maguire, R. S. Cowan & J. ]. Wurdack 30521. 



VENEZUELA: Amazonas: common on rocks in more exposed woodland below Interme- 

 diate Camp at 800-1000 m, Cerro Yutaje, Serrania Yutaje, Rio* Manapiare, February 4, 

 1953, B. & C. K. Maguire 35056. 



12. Navia colorata L. B. Smith, sp. nov. Fig. 36. 



Caulescens, ramosa; foliis in rosulis terminalibus, 15-25 cm longis, subtus 

 et basi supra pilis rninutis albis dissite vestitis, foliis interioribus cum bracteis 

 basi albis vel rubris et aream coloratam magnam circa inflorescentiam formanti- 

 bus, vaginis parvis, late ovatis, brunneis, laminis linearibus, longe acuminatis, 

 8-11 mm latis, spinis gracilibus pallidis 0.5-1.5 mm longis subdense armatis, 

 scapo brevi, nudo; inflorescentia subhemisphaerica, 15-25 mm diametro, bipin- 

 nata, multiflora; bracteis exterioribus subfoliaceis, inflorescentiam involucranti- 

 bus et multo superantibus; bracteis florigeris ovatis, acutis, 7-8 mm longis, inte- 

 gris, apice lepidotis; pedicellis brevibus, latis; sepalis liberis, lanceolatis, acu- 

 tis, 9 mm longis, apice inflexis lepidotisque, posterioribus anguste alato-carina- 

 tis; petalis aureis; ovario supero. 



TYPE: flowers yellow, leaves around flowering heads white basally, turning 

 green in the next seasons, on cliffs at the base of the escarpment at 1800 m alt., 



. Explanation of figures 33-36 



FIGS. 33-36. Navia. FIG. 33. N. viridis (Maguire & Maguire 29078). a, base of leaf,X 

 1; b, floral bract x 5; c, sepals, X 5. FIG. 34. N. phelpsiae (Maguire, Phelps, Hitchcock 

 & Budowski 31762). a, base of leaf, x 1; b, inflorescence, x l / 2 \ c, floral bract, X 1; d, se- 

 pals, x 1. FIG. 35. N. serrulata (Maguire, Cowan & Wurdack 30521). a, base of leaf, x 1; 



b, margin of leaf, x 5; c, inflorescence, x 1; d, floral bract, x 5; e, posterior sepals, X 5. 

 FIG. 36. N. colorata (Cowan & Wurdack 31417). a, base of leaf, x 1; b, inflorescence, X 1; 



c, floral bract and sepals, X 1; d, posterior sepals, x 5. 



