36 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



65. Xyris carinata Maguire & Smith, sp. nov. Fig. 21, A-E. 



Herbae acaules, cespitosae ; foliis lineari-ensiformibus, ad 15 cm longis, trans- 

 verse rugulosis, rubescentibus ; vaginis 3-4 cm longis, sulcatis, apice minutissime 

 ligulatis et cum laminis confluentibus, basi triangulari-auriculatis ; laminis 1 mm 

 latis; scapo 25-30 cm alto, 0.5 mm diametro, tereti, ruguloso; vagina scapi 

 subfoliacea, breviter laminata ; spica ellipsoidea, dein ex sicco obovoidea, 8-10 

 mm longa, pauciflora ; bracteis oblongo-ellipticis, rotundatis, atris, apice carinatis 

 et area dorsali parva angusta praeditis, basilaribus valde reductis, alteris sepala 

 superantibus ; sepalis lateralibus liberis, aequilateralibus, linearibus, acutis, 7 mm 

 longis, anguste carinatis, ad apicem versus brevissime ciliatis; placentis basilar- 

 ibus, elongatis. 



Type. Flowers yellow, occasional in Bonnetia-grass savanna, summit Cerro 

 Guanay, Carlo Guaviarito, alt. 1800 m, Rio Manapiare, Rio Ventuari, 4 Feb 1951, 

 Amazonas, Venezuela, B. Maguire, K. D. Phelps, C. B. Hitchcock & G. Budowski 

 31773 (holotype NY, isotype US). 



Distribution. Known only by the type collection. 



66. Xyris malmeana L. B. Smith, Bol. Inspet. Fed. Obras Contra Secas, Rio. 



10: 126. 1939. 



X. gldbrata (Seubert) Grisebach sensu Grisebach, Fl. Brit. W. Ind. 525. 1864, non X. 

 savannensis p gldbrata Seubert. 



Type. Open sandy soil, 2 km south of Vigia, Para, Brazil, Brouet 2136 (GH). 

 Distribution. Trinidad, Suriname (Tafelberg), northern Brazil (Amapa, 

 Guapore, Para). 



67. Xyris cuatrecasana Idrobo & Smith, Caldasia 6 : 244. /. 30. 1954. 



Type. Circasia, margenes del Vaupes, alt. 200 m, 9 Oct 1939, Vaupes, Colom- 

 bia, J. Cuatrecasas 7155 (holotype F). 



Distribution. Known only by the type collection. 



68. Xyris yutajensis Maguire & Smith, sp. nov. Fig. 22, A-F. 



Herbae acaules, cespitosae ; foliis lineari-ensiformibus, 5-7 cm longis, sub- 

 laevibrls ; vaginis ca. 1 cm longis, apice eligulatis et cum laminis confluentibus, 

 ad basin versus gradatim latioribus, intus dense ciliatis ; laminis 1-1.5 mm latis, 

 glabris, margine haud incrassatis; scapo 10-22 cm alto, 0.5 mm diametro, sub- 

 tereti, multicostato, glabro; vagina scapi eis foliorum simili, apiculata; spica 

 anguste ovoidea, acuta, ad 10 mm longa, submultiflora ; bracteis ellipticis, sub- 

 acutis, tenuibus, area dorsali angusta laeve viridi praeditis, basilaribus valde 

 reductis, alteris sepala subaequantibus ; sepalis lateralibus liberis, aequilateral- 

 ibus, lanceolatis, acutis, 5.5 mm longis, angustissime carinatis, glabris; placentis 

 basilaribus. 



Type. Flowers yellow, perennial herb on wet rocks and banks, frequent in 

 small savanna and along left fork of Cano Yutaje, alt. 1250 m, Serrania Yutaje, 

 Rio Manapiare, 12 Feb 1953, Amazonas, Venezuela, Bassett Maguire & C. K. 

 Maguire 35206 (holotype NY, isotype US). 



Distribution. Known only by the type collection. 



