BOTANY OF THE CHIMANTA MASSIF — I 



433 



extus circa apicem parce pilosulis superne minute hispidulis vel strigillosis aliter 

 glabris, marginibus eroso-serrulatis, intimis lineari-lanceolatis vel linearibus, 

 20-34 mm longis 1-2 mm latis, extus superne dense pilosis vel lanulosis; re- 

 ceptaculo plano-convexo, ca. 6 mm diam., alveolato glabro; paleis 2-5 deciduis 

 marginalibus extus parce pilosis marginibus superne hispidulis; floribus actino- 

 morphicis extus glabris, 24-25 mm longis, aurantiacis et stramineo-brunneis, tubo 

 stramineo-brunneo paullo prismatico-cylindrico, 9-10 mm longo 1.5-2 mm diam., 

 extus glabro intus fauce piloso, lobis aurantiacis vel stramineis 5, erectis in 

 statu sicco apice recurvatis linearibus acutis marginibus incrassatis, 15-17 mm 

 longis 0.6-0.8 mm latis, circa apicem puberulis marginibus ciliatis pilis rufis 1-3 

 mm longis praeditis; filamentis filiformibus in orificio tubi affixis, 16-18 mm 

 longis; antheris brunneo-stramineis vel aurantiacis linearibus, 7.5-8.5 mm longis, 

 glabris, appendicibus terminalibus anguste triangularibus 1 mm longis, caudicibus 

 sagittatis liberis inaequilateralibus subulatis, 0.7-1.3 mm longis; stylo auranti- 

 aco vel aureo, 35-42 mm longo 1 mm crasso, apice bifido extus subscabridulo- 

 papillato basi ab corona carnosa 5-lobata 1-1.3 mm alta subtento; achaeniis 

 lineari-turbinatis prismaticis, 7-8.5 mm longis superne ad 2 mm latis, plerumque 

 12-costatis fulvo-velutinis aetate parte inferiore glabrescentibus; pappo stra- 

 mineo-brunneo, 20-22 mm longo basi 0.2-0.3 rnm lato, 3-4-seriato, setis 

 barbellatis. 



TYPE: swampy savanna in depression below ridge west of west branch of 

 headwaters of Rio Tirica, Central Section, Chimanta Massif, Bolivar, Venezuela, 

 2120 m alt., February 13, 1955, Julian A. Steyermark & John J. Wurdack 821 

 (holotype F, isotype NY). Paratypes: thickets bordering savanna below Upper 

 Falls of Ri*o Tirica above Summit Camp, Central Section, Chimanta Massif, 1940 

 m alt., February 7, 1955, Steyermark & Wurdack 605; dominant in large swamp, 

 east-central portion of summit of Apacara-tepui, Chimanta Massif, 2450-2500 m 

 alt., June 21-22, 1953, Steyermark 75923. 



8. Chimantaea espeletoidea Maguire, Steyermark, & Wurdack, sp. nov. 



Frutex 2-3-metralis, caule erecto ligneo 1.5-2 cm diam. simplici solitario 

 infra denudato aliter conferte folioso, parte denudata cano-tomentosa vel glabra, 

 parte foliosa cano-tomentosa; foliis supremis congestis adscendentibus vetusti- 

 oribus patentibus alternis petiolatis, petiolis crassis, 1-2 cm longis 1-1.3 cm 

 latis, basi ampliatis utrinque cano-lanosis vetustioribus tomentellis, laminis 

 coriaceis supra atroviridibus glabris vel subglabris subtus ochroleucis dense to- 

 mentosis vel vetustioribus cano-tomentosis anguste elliptico-lanceolatis obtusis, 

 6-10 cm longis 1-2 cm latis, supra sulcatis nervis lateralibus obscuris valde 

 revolutis; capitulis solitariis terminalibus sessilibus in basi lanosa foliorum 

 supremorum et copiosis tomentosis insessis 25-35-floris homogamis maturis dis- 

 tentis, 3.5 cm altis 5.5 cm latis; involucro maturo distento late campanulato 5-6- 

 seriato, phyllariis 75-80, maturis squarrosis vel laxe recurvatis in dura to -chart a- 

 ceis, extimis medianisque late lanceolatis acuminatis, 10-12 mm longis 2.5-3 mm 

 latis, intus glabris extus cano-tomentosis, interioribus intimisque linearibus vel 

 subulatis acuminatis vel caudatis, 30-32 mm longis 1.8-2 mm latis, supra medium 

 ochroleuco-tomentosis intus glabris; receptaculo profunde concavo, 4.5-5 mm 

 diam., areolis parce cano-tomentellis; paleis 3-4, deciduis marginalibus charta- 

 ceis subulatis, 30-31 mm longis 0.8-0.9 mm latis, extus medium supra parce 

 pilosis intus glabris; floribus actinomorphicis extus glabris, 26 mm longis, tubo 

 prismatico-cylindrico, 9 mm longo 1.5 mm diam., extus glabro intus fauce dense 

 hirsutulo, lobis pallide luteis 5, erectis apice recurvatis linearibus acutiusculis 

 marginibus incrassatis, 17-18 mm longis 0.7-0.8 mm latis, parce ciliolatis apice 



