1957] 



BOTANY OF THE CHIMANTA MASSIF— I 



421 



rectis applanatis 2 mm longis sublaxe armatis; scapo nudo, brevi, vaginis foliorum 

 omnino occulto; inf lorescentia hemisphaerica, digitato-glomerata, 4-6 cm diametro; 

 bracteis exterioribus subf oliaceis, latis, inf lorescentiam involucrantibus et 

 flores subaequantibus, basi rubris; bracteis florigeris lanceolatis, acuminatis, 

 sepala subaequantibus, apice incrassatis, integris vel obscure serrulatis, rubris; 

 floribus breviter crasseque pedicellatis; sepalis liberis, lanceolatis, rectis, 

 acuminatis, 22-30 mm longis, integris, rubris, obscure lepidotis; petalis 5 cm 

 longis, obtusis, pulcherrime aureis, apice macula viridi ornatis; staminibus 

 styloque longe exsertis; ovario supero; seminibus nudis, corrugatis, nigris. 



TYPE: on soil-covered cliff-face along Rfo Sarven near Camp 9 at 1200 m 

 alt., Sarven -tepuf, Bolivar, Venezuela, February 7, 1953, /• /• Wurdack 34324. 



VENEZUELA: Bolivar: Chimanta Massif: on shaded sandstone boulders and on bluffs 

 above, trail between Camp 3 and Camp 4, vicinity of stream between northwestern part 

 of Abacapa-tepui and Apacara-tepui at 1200-1600 m alt., April 19, 1953, /• A. Steyermark 

 75159. Common on vertical sandstone banks and boulders, southwestern-facing forested 

 slopes of Chimanta-tepui (Torono-tepui), between base Camp and steep slopes above 

 valley of Rio Tirica at 1000-1400 m alt., May 15, 1953, J. A. Steyermark 75392. Common 

 all alon^ shaded bluffs at base where damp, along southwest-facing sandstone bluffs of 

 Chimanta-tepui (Torono-tepul) near southern corner at 1700 m alt., May 19, 20, 1953, 

 /. A. Steyermark 75495. 



34. Navia scopulorum L. B. Smith, sp. nov. (Fig. 88.) 



Dense aggregata; caule imperfecte solum cognito, 8 mm diametro; foliis 

 plurimis, patentibus, 14 cm longis, vaginis late ovatis, 15 mm longis, integris, 

 brunneis, tenuibus, glabris, laminis linearibus, acuminatis, basi haud attenuatis, 

 6 mm latis, ex sicco involutis, laxe serrulatis, mox glabris; scapo gracili, 1 cm 

 longo, omnino occulto; inf lorescentia nidulanti, pauciflora, glabra; bracteis 

 exterioribus e late ovato longe acuminatis, ad 2 cm longis, apice obscure ser- 

 rulatis; floribus subsessilibus; sepalis liberis, cochleari-imbricatis, lanceolatis, 

 acuminatis, 11-15 mm longis; petalis 25 mm longis; ovario l / 2 infero; capsula 

 ellipsoidea, 7 mm longa. 



TYPE: leaves rich green on both sides, not glaucous as in number 75497, in 

 dry crevices at base of bluff, densely forested slopes along trail from Base Camp 

 to Bluff Camp, western slopes of Chimanta-tepui (Torono-tepui) at 1 100-1700 m 

 alt., Chimanta Massif, Bolivar, Venezuela, May 30, 31, 1953, /• A. Steyermark 

 75613. 



VENEZUELA: Bolivar: leaves rigid, coriaceous, rich green in upper half, silvery 

 gray in lower half, below gray or pale green, bracts erect, rigid, silvery-yellow green, in 

 crevices an 1 on sheer walls, often pointing downward, along base of southeast-facing 

 sandstone bluffs of Chimanta-tepui (Torono-tepui), from south corner northeastward at 1700 

 m alt., May 21, 1953, /• A. Steyermark 75497. 



Tillandsia turneri var. orientalis L. B. Smith, var. nov. 



Tillandsia rhodocincta Baker, Jour. Bot. 26: 143. 1888. 

 Tillandsia multifolia Mez, Repert. Spec. Nov. 12: 420. 1913. 



Differt in omnibus partibus minor,' florifera 15-40 cm alta; laminis foliorum 

 15-30 mm latis; inf lorescentia pauciramosa vel simplici; spicis paucifloris; 

 sepalis 13-15 mm longis. 



TYPE: epiphyte, vicinity of Summit Camp along Rfo Tirica at 1925 m alt., 

 Central Section, Chimanta Massif, Bolivar, Venezuela, February 18, 1955, /• A. 

 Steyermark and J. J. Wurdack 928. 



VENEZUELA: Bolivar: Mount Roraima summit, December 18, 1884, im Thurn 316 

 (type of Tillandsia rhodocincta Baker); McConnell & Quelch 671. On shrubs, frequent in 

 upper part of upper cumbre at 2300-2350 m alt., northwest cumbres, Churi-tepul (Muru- 

 Tepui), February 3, 1953,/./. Wurdack 34305. Amazonas: Cerro Yavi summit at 2200 m 



