1960] 



BOTANY OF THE GUAYANA HIGHLAND PART IV 



17 



villoso; seapi bracteis subfoliaceis, erectis, supremis internodia subaequantibus; 

 infloreseeiitia laxe bipinnatim paniculata, lepidibus minutis stellatis vel lineari- 

 bus albidis sparse vestita ; bracteis primariis anguste triangularibus, quam 

 ramorum basibus sterilibus nudis applanatis ad 6 cm longis duplo vel triplo 

 brevioribus; ramis patentibus, sursum curvatis, lateralibus ad 19 em longis, sub- 

 dense florigeris; bracteis florigeris triangularibus, minutis, quam pedicellis 

 graciliter cylindricis 12 mm longis multo brevioribus ; floribus patentibus. nullo 

 modo secundis; sepalis late ellipticis, 5 mm longis, sublaevibus glabrisqne, in- 

 tegris; petalis obtnsis, 13 mm longis, stamina superantibus, albis vel roseis; 

 seminibus caudatis. 



VENEZUELA: Amazonas: Cerro de la Neblina, Rio Yatun, alt. 2000-2100 m, common in 

 wet savannas 4-6 km southwest of Cumbre Camp, 21 Nov 1957, B. Maguire, J. J. Wurdack 4' 

 C. K. Maguire 42167 (type). 



The above species differs from C. nubigena in its distinctly serrate leaves 

 and elongate pedicels. 



Pitcairnia wurdackii L. li. Smith, sp. now Fig. 4. 



Florifera 1-2 m alta ; foliis interioribns solum eognitis, ad 7.5 dm longis, 

 laminis linearibus, aeuminatis, pungentibus, 15 mm latis, supra glabris, subtus 

 dense adpresseque einereo-le])idotis. spinis atris snrsum curvatis 3 mm longis 

 laxe serratis; seapo erecto, 13 mm diametro, glabro; seapi bracteis erectis, in- 

 fimis subfoliaceis, imbrieatis, snpremis anguste triangularibus, quam internodiis 

 brevioribus, integris, apice lepidotis; infloreseeiitia subsimplici (basi ramo brevis- 

 simo unico praedita), 65 cm longa, glabra, ex sieeo nigreseente; bracteis flo- 

 rigeris ellipticis, aentis, 20 mm longis, pedicellos superantibus, integris, margine 

 nervatis, alibi ex sicco rugosis; floribns snbereetis; pedicellis graciliter cylin- 

 dricis, ca. 12 mm longis, valde sulcatis; sepalis lineari-lanceolatis, acutis, 4 cm 

 longis, ecarinatis; petalis 6 cm longis, nudis, pallide viridibns; staminibus in- 

 clusis ; ovario ca. ^2 infero; capsula apice dehiscente ; seminibus alatis. 



VENEZL'ELA : Amazonas: Rio Yatua, alt. 100-140 m, locally abundant on Laja Catipan, 

 26 Sep 1957, B. Mac/aire, J. J. Wurdack $ C. K. Maguire 41584 (type). 



From the nearly related P. turbinella this species differs in its completely 

 glabrous inflorescence and from P. bulbosa in its entire upper scape-bracts and 

 nearly simple inflorescence. 



Pitcairnia maguirei L. B. Smith, sp. nov. Fig. 5. 



Florifera 1.5 m alta ; foliis ad 6 dm longis, vaginis snborbicularibus, 3 cm 

 longis, subglabris, castaneis, lucidis, laminis linearibus, aeuminatis, pungentibus, 

 17 mm latis, utrinque dense adpresseque cinereo-lepidotis, spinis atris sursum 

 curvatis 1 mm longis laxe serratis ; scapo erecto, 8 mm diametro, dissite albido- 

 lepidoto; seapi bracteis erectis, infimis subfoliaceis, dense imbrieatis, supremis 

 anguste triangularibus, internodia subaequantibus, serrnlatis, basi excepta dense 

 lepidotis ; infloreseeiitia simplicissima, 45 cm longa, subdense multiflora, bracteis 

 florigeris infimis exeeptis glabra, ex sicco nigreseente ; bracteis florigeris ovatis, 

 acutis, ad 25 mm longis, ovarium superantibus vel subaequantibus, inteuris, 

 nervatis, rubris, pallide angusteque marginatis; floribus subsessilibus, diver- 

 gentibus ; sepalis lineari-laneeolatis, acutis, 4 cm longis, ecarinatis ; petalis acutis, 

 6 cm longis, nudis, pallide viridibus ; staminibus inelusis ; ovario ca. % infero ; 

 seminibus alatis. 



VENEZUELA: Amazonas: Alto Rio Orinoco, alt. 130-200 m. locally frequent on Esmer- 

 alda ridge, 20 Sep 1957, B. Maguire, J. J. Wurdaclc # TV. M. Keith 41556 (type ). 



