1957] 



BOTANY OF THE CHIMANTA MASSIF— I 



425 



ANNONACEAE 27 



Anaxagorea petiolata R. E. Fr. Lloydia 2: 179. 1939. 



Venezuela, Estado Bolivar, in rainforest at base of Ptari-tepul, elev. 1100 m, 

 Dec. 18, 1952, Bassett Maguire & John J. Wurdack 33819. 



Tree 12 m, cauliflorous and ramiflorous. Previously known from British 

 Guiana, Kanuku Mountains. 



COMPOSITAE 28 



Alomia ballotaefolia Maguire, Steyermark & Wurdack, sp. nov. 



Herbacea annua 3.5-5 dm alta, caulibus vinaceis teretibus erectis subsimpli- 

 cibus vel pauciramosis dense puberulis, 2-4 mm diam.; foliis plerumque oppositis 

 petiolatis, petiolis 1-2.5 cm longis, dense puberulis; laminis membranaceis 

 ovato-deltoideis vel rhomboideis grosse inaequaliterque dentatis vel parce 

 lobatis, supra molliter puberulis subtus dense molliter strigosis, 1.5-5.5 cm 

 longis 1-3.5 cm latis, apice subacutis vel obtusiusculis basi cuneatis vel sub- 

 truncatis, penninerviis nervis lateralibus utroque latere 2-4, dentibus utroque 

 latere 5-8 obtusis vel rotundatis; capitulis 11-14-floris ad apices ramorum 

 modice numerosis corymbulis confertis dichotome dispositis campanulatis, 4-4.5 

 mm longis 3-4 mm latis; involucri bracteis 12-14, 3-4-seriatis viridibus infimis 

 lineari-lanceolatis vel anguste lanceolatis acutiusculis, 1.8-2 mm longis, extus 

 dense hirtellis pilis adscendentibus, ceteris lanceolatis vel elliptico-lanceolatis 

 acuminatis vel subacurninatis, 2.5-3 mm longis 0.5-0.8 mm latis, extus dense 

 hirtellis prominenter 3-costatis; receptaculo subhemisphaerico subalveolato 

 glabro paleifero; floribus lilacinis, 2.5 mm longis, in tubum proprium et fauces 

 distinctas paullo differentiatis, a basi ad limbum sensim ampiiatis, tubo extus 

 parce glanduloso-puberulo limbo glabro, lobis ovatis hebeti-acutis 0.5 mm longis 

 glabris; paleis nonnullis tenuibus ob lanceolatis vel ligulato-oblanceolatis cuspi- 

 dato- vel subito acuminatis, 2.2-2.5 mm longis 0.5 mm latis, extus parte superiore 

 puberulis; achaeniis prismaticis nigris, 1.5 mm longis 0.4 mm latis, calvis apice 

 annulo carnoso integerrimo. 



TYPE: along base of southeast-facing sandstone bluffs of Chimanta-tepui 

 (Torono-tepui), Chimanta Massif, Bolivar, Venezuela, 1700 m alt., May 21, 1953, 

 Julian A. Steyermark 75520 (holotype F, isotype NY). 



This species most closely resembles A. angustata (Gard.) Benth. and A. 

 regnellii Malme, both from Brazil. From the former it differs in the receptacular 

 pales, shorter phyllaries,. opposite leaves, and dense non-glandular pubescence of 

 leaves and involucre. From the latter it may be distinguished by the glandular- 

 puberulent outside of the corolla tube, more or less differentiation of corolla into 

 tube and limb, 11-14- instead of 40-f lowered heads, the presence of receptacular 

 pales, and dense, non-glandular pubescence of stems and leaves. 



Eupatorium ibaguense Schultz-Bip. var. indiscretum Maguire, Steyermark & 

 Wurdack, var. nov. 



A typo differt foliis anguste ovatis acutis vel parce acuminatis obscure 

 serrulatis (mucronibus callosis ca. 0.5 mm altrs utrinque ca. 6) basi late cuneatis 

 supra basin 3-plinerviis vel obscure 5-plinerviis, 4-9 cm longis 2-3 cm latis; 

 corollae lobis apicem versus puberulis; achaeniis 2.3-2.5 mm longis. 



TYPE: frequent along lower escarpment face, Sarven-tepul, Chimanta Massif, 

 Bolivar, Venezuela, 1900-2050 m alt., Jan 13, 1953, John J. Wurdack 34112 

 (holotype NY, isotype F). 



27 By R. E.. Fries. 

 tAikania florida by Leandro Aristeguieta. 



