1957] 



THE BOTANY OF THE GUAYANA HIGHLAND— PART II 



383 



tis, nervis liberis ad basira corollae; filamentis ad basim limbi affixis; antheris 



14- 15 mm longis, appendicibus apicalibus acutis, appendicibus caudalibus 

 linearibus antherarum adjacentium connatis; stylis ca. 42 mm longis, sursum 

 asperulisc ramulis ca. 1 mm longis s patentibus, compressis aliquantum dilatatis, 

 acutiusculis; achaeniis plus minusve prismaticis, rubritinctis., 6-7 mm longis g 

 10-nervatis, glabris; annulo deficienti, corona aliquantum 5-lobata, ca. 0.8 mm 

 alta; pappo sordido, ca. 2 cm longo, (4) 5-seriato, setis anguste subpaleaceis ad 

 apices acute dilatatis, barbellatis, ad bases compressis minute connatis. 



TYPE: small tree 2-5 m high, often virgate s leaves coriaceous, involucre 

 green, obconic, bracts brown-tipped, frequent in low Bonnetia bush, vie. Cumbre 

 Camp at 1700 m alt., Cerro de la Neblina, Terr. Amazonas, Venezuela, January 



4, 1954, Maguire, Wurdack & Bunting 37041 (NY). Paratypes, all from Cerro 

 Neblina: shrub or tree 1.5-4.0 m high, border of open savanna at 1800 m s Ma- 

 guire, Wurdack & Bunting 37150; small tree or shrub 1-2 m high, flowers yellow- 

 brown, frequent, along West Escarpment at 1850 m alt., Maguire, Wurdack & 

 Bunting 37005; shrub or small tree, heads obconic, frequent^ cumbre savanna, at 

 1800 m alt., Maguire, Wurdack & Bunting 37077. 



Section 2. Campestris Maguire & Wurdack, sect. nov. 



Capitula solitaria terminalia; corollis urceolatis in tubo et limbo nondif- 

 ferentiatis, lobis flexuosis, 3-venatis; filamentis submedio affixis; receptaculo 

 paleaceo; achaeniis subprismaticis; corona aliquantum 5-lobata; pappo 4-5- 

 seriato, setis anguste subpaleaceis, ad basim connatis; foliis non reticulatis. 



TYPUS: Stenopadus campestris Maguire & Wurdack. 



5. Stenopadus campestris Maguire & Wurdack, sp. nov. (Fig. 71.) 



Arbor parva vel 5 m alta; ramulis glabris, axillis foliorum exceptis; foliis 

 alternis subconfertis; laminis glabris, coriaceis, oblanceolatis vel obovatis 

 subcuneatis, (5) 8-13 cm longis, 2.5-6.0 cm latis, marginibus revolutis, costa 

 subtus prominenti, venis lateralibus 5-6-jugis, improminulis; petiolo 4-8 mm 

 longo; capitulo solitario terminali, paucipedunculato, 20-30-floro, homogamo; 

 involucro hemisphaerico, 2.2-2.8 cm alto 5-6-seriato; phyllariis glabris obtusis, 

 subcarinosis conspicue scario-marginatis, inferioribus late ovatis vel oblongis, 

 5-15 mm longis, superioribus oblongis vel oblongo-lanceolatis, 4-6 mm latis, 



15- 25 mm longis, intimis angustioribus ca. 1.5 mm latis; corollis glabris, tubo 

 urceolato ca. 10 mm longo, lobis linearibus 7-9 mm longis, obtusis, flexuosis, 

 non circinnatis valde 3-venosis, venis liberis ad basim tubi; filamentis ca. 25 

 mm longis, subter tubi medio affixis; antheris 10-11 mm longis; appendicibus 

 apicalibus 2.5-3.0 mm longis, acutiusculis, appendicibus caudalibus sagittatis, 

 ca. 1.5 mm longis, linearibus truncato-acutis, adjacentibus omnino connatis; 

 stylis subulatis, 32-35 mm longis, sursum valde asperulis, ramulis 1.5-1.8 mm 

 longis, non differentiates obtusiusculis; achaeniis immaturis glabris prismaticis 

 valde 10-costatis, ca. 6-8 mm longis; annulo deficienti; corona 0.5-0.6 mm 

 longis, 5-lobatis sparse hirsuto-pilosis; pappo fulvo, setis 4-5-seriatis, sub- 

 paleaceis, 10-18 mm longis, ad basim 0.2-0.5 mm latis, breviter connatis, 

 minute barbellatis. 



TYPE: shrubby tree 1.5-5.0 m high, flowers straw-colored, frequent, thickets 

 about edge, Sabana Venado, Cano Pimichln, 2 km above Puerto Pimichfn, at 140 

 m alt., Rio Guam/a, Territorio Amazonas, Venezuela, April 14, 1953, Maguire & 



Explanation of figure 71 



FIG. 71. a-b, Stenopadus campestris. a, habit, X Vi\ b, corolla, X 2. c-d, Stenopadus 

 obconicus. c, habit, X l A\ d, corolla, X 2. 



