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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



38. Xyris juncifolia Maguire & Smith, sp. nov. Fig. 10, A-E. 



Herbae acaules, cespitosae ; foliis ad 60 cm longis; vaginis 5-11 cm Longis, 

 basin versus gradatim ampliatis, sulcatis, pallide brunneis, plus minusve rugu- 

 losis, eciliatis, apice late breviterque ligulatis ; laminis teretibus, subulato- 

 acuminatis, 2 mm diametro, ex sicco sulcatis; scapo 60-77 cm alto, 1-1.5 mm 

 diametro, tereti, ecostato, glabro ; vagina scapi foliacea, longissime laminata; 

 spica ellipsoidea vel obovoidea, 14-20 mm longa, multiflora ; bracteis basilaribus 

 sterilibus multis, valde reductis, alteris ellipticis, late obtusis, sepala superanti- 

 bus, area dorsali subelliptica carinata praeditis ; sepalis lateralibus liberis, valde 

 inaequilateralibus, ellipticis, obtusis, 5.5 mm longis, late carinatis, brevissime 

 ciliatis ; placentis basilaribus. 



Type. Leaves rounded, in clumps, common in Cumbre Camp, alt. 2000 m, 

 Cerro Guaiquinima, Rio Paragua, 25 Dec 1951, Bolivar, Venezuela, Bassett 

 Mat/Hire 32750 (holotype NY, isotype US). Paratypes. Abundant bog-marsh 

 herb and along water course, North Valley, alt, 1700 m, 10-12 Jan 1952, 33055; 

 flowers yellow, frequent in moist open areas, cumbre along west rim south for 

 6 km from camp cario, alt. 2000 m, Serrania Paru, Rio Paru, Cario Asisa, Rio 

 Ventuari, 1 Feb 1951, Amazonas, Venezuela, Cowan d Wurdack 31284, 31185. 



Distribution. Known only by the cited specimens. 



39. Xyris neblinae Maguire & Smith, sp. nov. Fig. 11, A-E. 



Herbae e fragmentis solum cognitae, verisimiliter acaules et cespitosae ; foliis 

 ca. 80 cm longis ; vaginis maximis, ad 29 cm longis, basin versus gradatim ampli- 

 atis, apice quam laminis paulo latioribus, marginibus angustis pallidis exceptis 

 omnino atro-castaneis, obscure rugulosis ; laminis teretibus, subulato-acuminatis, 

 1.5 mm diametro, laevibus; scapo 80 cm alto, tereti, ecostato, ex sicco leviter 

 sulcato, glabro ; vagina scapi subf oliacea, lamina ad 4 cm longa praedita ; spica 

 late fusiforme, 25 mm longa, multiflora; bractois basilaribus sterilibus multis, 

 valde reductis, alteris ellipticis, late obtusis, sepala subaequantibus, area dorsali 

 anguste ovata carinata praeditis; sepalis lateralibus liberis, aequilateralibus, 

 lineari-lanceolatis, acutis, 9 mm longis, late carinatis, dense ciliatis; placentis 

 vetustis ignotis. 



Type. Summit, savanna near west escarpment, 2 km north of Cumbre Camp, 

 occasional, alt. 1800 m, Cerro de la Neblina, Rio Yatua, 12 Jan 1954, Amazonas, 

 Veneeuela, B. Maguire, J. J. Wurdack tf* G. S. Bunting 37243 (holotype NY, 

 isotype VEN, US). Paratypes. Cerro de la Neblina, Maguire, Wurdack & Ma- 

 guire 42381, 42301; Maguire, Wurdack & Bunting 37216, 37315. 



Distribution. Known only by the type collections. 



40. Xyris longiceps Malme, Rec. Trav. Bot. Neerl. 9: 131. 1912. 



Type. In arenosis inundatis, Suriname, Splitgerber 978 (L). 



Distribution. Moist sandy savannas. SURINAME. Tafelberg, Maguire 24259; 

 Zanderij, Maguire 23673, 23718. VENEZUELA. Amazonas : "Esmeralda, Tate 301 

 (NY), Steyermark 58407 (NY) ; Serrania Paru, Phelps & Hitchcock 461 (NY). 

 COLOMBIA. Yurupari, Rio Vaupes, Garcia-Barriga 14936 (COL, NY, US); 

 Araracuara Savannas, Rio Caqueta, Maguire, Maguire & Fernandez 44127 (COL, 

 NY, US), 44162 (COL, NY, US). BRAZIL. Amazonas (var. polystachya Smith 

 & Downs). 



