1957] 



BOTANY OF THE CHIMANTA MASSIF— I 



435 



A shrub 1-4 m high, of cumbre elfin Woodland, of the Roraima chain, occurring 

 above 2000 m altitude. 



2. Quelchia cardonae Steyermark, Fieldiana 28:670. 1953. 



TYPE: cumbre, Cerro Acopan-tepuf at 2200 m alt., October 1947, F. Cardona 

 2288 (US No. 19322272). 



Distribution. Known only from Acopan-tepui , Gran Sabana, Edo. Bolivar, 

 Venezuela, where it is an occasional tree of openings and elfin woodlands. 

 Additional specimens, Chimanta Massif: Steyermark & Wurdack 403, 565, 1007. 



3. Quelchia bracteata Maguire, Steyermark & Wurdack, sp. nov. 



Frutex 2-4-metralis, caule erecto ligneo, ramulis erectis infra denudatis 

 aliter conferte fbliosis, 0.4-0.7 cm diam., parte media supraque stramineo- 

 tomentosa infra strigoso, pilis malphigio-pauciramosis, foliis alternis densissime 

 confertis erectis breviter petiolatis, petiolis incrassatis, 3-7 mm longis basi 

 2.5-4 mm latis, pubescentibus vel glabrescentibus, laminis coriaceis supra 

 atroviridibus subtus argenteo-viridibus utrinque valde reticulato-venosis late 

 oblongis vel obovato-oblongis rotundatis vel obtusis apiculatis basi subcordatis 

 vel subobtusis, 3-8 cm longis 1.5-3-5 cm latis, costa media subtus prominenti, 

 nervis lateralibus utroque latere 8-9; capitulorum glomerulis axillaribus, saepe 

 pseudo-terminalibus dense confertis numerosis pedunculatis, pedunculis 0.3-3 cm 

 longis, plerumque strigosis; corymbis 2-2.5 cm latis; capitulis congestis unifloris, 

 17-21 mm longis cum bracteis foliosis vel lanceolatis acutis vel subacutis, 12- 

 17 mm longis 3-10 mm latis, strigillosis vel supra glabrescentibus subtendenti- 

 bus; involucro fusiformi-elliptico, 9-12 mm longo 3-4 mm lato, 4-5-seriato, 

 phyllariis 7-9 chartaceo-coriaceis lanceolatis extimis apice acutis vel sub- 

 obtusis, 8-9 mm longis 2-2.5 mm latis, apice ciliatis extus circa apicem leviter 

 pilosis, medianis intimisque apice obtusis vel subobtusis, 7.5-9 mm longis 2.5 

 mm latis, apicibus marginibusque parte superiore ciliolatis aliter glabris; corollis 

 albidis actinomorphicis glabris profunde 5-fidis tubo cylindrico 3.5-4.0 mm longo 

 1.2 mm lato, lobis valde recurvatis linearibus acutis, 6 mm longis 1 mm latis; 

 antheris atropurpureis, 6-6.25 mm longis, basi caudato-sagittatis, appendicibus 

 terminalibus triangulari-lanceolatis acutis, 1.5 mm longis, caudicibus lineari- 

 lanceolatis, 1.5-2.0 mm longis, acutiusculis hispidulis adjacentibus connatis; 

 styli ramulis albidis divaricatis, ca. 1.75 mm longis, minute 3-lobatis; achaeniis 

 subfusiformi-oblongis griseis vel brunneo-purpureis, 4-5 mm longis 1.5 mm latis, 

 leviter 10-costatis glabris; pappo stramineo vel purpureo, vel supra stramineo et 

 basi purpureo, 7-8 mm longo, setis scabridulis. 



TYPE: forested slopes below summit of western escarpment, Torono-tepui, 

 Chimanta Massif, Bolivar, Venezuela, 1970 m, February 9, 1955, Julian A. 

 Steyermark & John ]. Wurdack 683 (holotype NY, isotype F). Paratypes: rocky 

 slopes around zanjones between east and west branches of headwaters of Rio 

 Tirica, Central Section, Chimanta Massif, 2185 m alt., February 12, 1955, Steyer- 

 mark & Wurdack 754 (putative parent of x Q. grandifolia); Bonnetia forest, north- 

 western part of summit of Abacapa-tepui* Chimanta Massif, 2125-2300 m alt., 

 April 13, 1953, Steyermark 74872. 



4. Quelchia eriocaulis Maguire, Steyermark & Wurdack, sp. nov. 



Frutex 1-3-metralis, caule erecto ligneo simplici solitario infra denudato 

 aliter conferte foiioso, parte media supraque densissime ferrugineo-lanulosa 

 infra tomentoso vel glabrescenti, 0.7-1.2 cm diam.; foliis alternis densissime 

 confertis breviter petiolatis, petiolis incrassatis, 0.7-1,5 cm longis, densissime 



