1957} 



THE BOTANY OF THE GUAYANA HIGHLAND— PART II 



381 



1. Stenopadus kunhardtii Maguire, Mem. N. Y. Bot. Gard. 8: 151. 1953. 



TYPE: spreading tree 12 m high, 1500 m alt., Cerro Sipapo, Amazonas, Vene- 

 zuela, Maguire & Politi 28303 (NY; the collection number was mis-cited in the 

 original publication as 28304), 



Distribution. Known only from Cerro Sipapo. 



2. Stenopadus huachamacari Maguire, Mem. N. Y. Bot. Gard. 8: 151. 1953. 



Type: Slender tree 10 m high, 1500 m alt., Cerro Huachamacari, Amazonas, 

 Venezuela, Maguire, Cowan & Wurdack 30026 (NY). 

 Distribution. Known only from Cerro Huachamacari. 



3. Stenopadus stipitatus Maguire & Wurdack, sp. nov. 



Arbor 4-6 m alta; ramulis teretibus in axillis foliorum dense pilosis, aliter 

 glabris; foliis alternis, laminis elliptico-oblanceolatis, 7-12 cm longis, 3-5 cm 

 latis, ad apicem rotundatis, basi acutis, venis primariis lateralibus prominulis, 

 ca. 15-jugis in nervo marginali collectivo; petiolo lato, 3-5 mm longo; capitulo 

 solitario sessili terminali majusculo, 40-50-floro homogamo; involucre hypo- 

 crateriformi 6-7 cm alto, multiseriato; stipite 3.5-4.5 cm longo, 10-12-seriato, 

 bracteis glabris deltoideo-ovatis vel ovatis 3-8 mm longis, carinatis, obtusis; 

 phyllariis ca. 8-seriatis, vix carinatis, gradatis, inferioribus ovato-oblongis 

 1.5-2.5 cm longis, 7-8 mm latis, superioribus oblongo-lanceolatis ca. 3 cm 

 longis, ca. 6 mm latis, obtusis, intimis anguste 2-3 mm latis; receptaculo piano 

 alveolato sparse piloso multipaleaceo, paleis 2-3 mm latis; corollis glabris 

 actinomorphis subcarneis subventricoso-hypocrateriformibus, tubo cylindrico 

 10-12 mm longo, limbo ca. 8 mm longo, lobis 7-8 mm longis, circinnatis acutis, 

 3-nervatis, nervis liberis ad basim corollae; filamentis ca. 17 mm longis, ad 

 basim limbi affixis; antheris 12-13 mm longis, appendicibus apicalibus acutis, 

 appendicibus caudalibus antherarum adjacentium connatis; stylis ca. 40 mm 

 longis, sursum asperulis, ramulis ca. 0.5 mm longis compressis, aliquantum 

 dilatatis, obovatis, acutiusculis; achaeniis glabris, prismaticis, 4-angulatis, ca. 

 6 mm longis, annulo deficienti; corona ca. 0,5 mm longa, aliquantum 5-lobata; 

 pappo ca. 22 mm longo, stramineo, (4) 5-seriato; setis anguste subpaleaceis, ad 

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



TYPE: small branched tree 4-6 m high, heads long-stipitate; infrequent, 

 woodland along margins of Cano Yutaje, Right Fork, at 1500 m alt., Cerro 

 Yutaje, Manapiare River, Terr. Amazonas, Venezuela, Feb. 21, 1953 5 B> Maguire 

 & C. K. Maguire 35358 (NY). 



Known only by the type collection. 



4. Stenopadus obconicus Maguire & Wurdack, sp. nov. (Fig. 71.) 



Arbor parva 1-5 m alta; ramulis teretibus, in axillis foliorum dense pilosis 

 aliter glabris; foliis alternis, laminis 7-11 cm longis, 3.5-5.0 (6.0) cm latis, 

 glabris, oblongo-oblanceolatis vel obovatis, ad apicem rotundis, ad basim acutis, 

 costa subtus prominenti, aliquantum impressa supra; venis lateralibus primariis 

 8-10-jugis, in nervo marginali collectivo, prominulis subtus; petiolo 6-12 mm 

 longo; capitulo solitario vel frequenter 2-3, sessili vel pedunculo 1-2 longo, 

 majusculo, 25-35-floro, homogamo; involucro obconico 4.5-6.0 cm longo, 10-12- 

 seriato, phyllariis numerosis glabris, anguste acute lanceolatis, gradatis minute 

 scariociliatis, inferioribus 7-8 mm longis, superioribus ca. 4 cm longis, intimis 

 non angustioribus; receptaculo piano alveolato moderate paleaceo, paleis 10-15, 

 linearibus integris 0.6-0.8 mm latis acutis, ad apicem minute serrulatis, corollis 

 actinomorphicis glabris, parte tubulata 14-15 mm longa, non fere in tubo et 

 limbo differentiatis, sursum expanso, lobis 12-14 mm circinnatis acutis 3-nerva- 



