276 PROF. OLIVER ON NEW PLANTS FROM RORAIMA. 



foliis digitatis, 5-7-natis, foliolis ellipticis, apice rotunclatis v. ssepius leviter emar- 

 ginatis basi acutiusculis inargme integerrimis anguste revolutis crassiusculis coriaceis, 

 supra denudatis, reticulo nervorum densiusculo infra valde prominente, floribus in 

 umbellas duas compositas superpositasque digestis, unibellulis numerosis, 9-12-floris, 

 pedunculo compresso elongato superne dilatato, radiis nliformibus basi bracteolatis, 

 calycis limbo minute 5-dentato, corolla bemispbaerica acutiuscula, petalis apice 

 cohasrentibus demum a basi secedentibus, staminum filamentis brevibus, stylis in 

 unum sulcatum 5-fidutn latitudinem disci epigyni vix sequantern concretis f ructu. . . . 



Roraima. 



Allied to Sciadophyllum japurense, Mart, et Zucc, but differing in leaves, inflorescence, 

 and style. 



Arbor. Rami supremi 2 cm. crassi. Petiolus communis 20 cm. longus. Petioli 2-4 cm. 

 longi. Poliola 11-13 cm. longa atque 4-5 cm. lata. Pedicelli 5-8 mill, longi. 



220. Viburnum glabratum, H. B. K. Base of cliff. 



134. Coccocypselum canescens, Willd., var. House. 



6. Kotchub;ea (Synisoon Schomburgkianum, Baill.). Aroie Creek. 

 69. Declieuxia chiococcoides, H. B. K. House. 

 29. Sipanea pratensis, Aubl. Arapoo R. 



135. Cephaelis axillaris ?, Sw. House ; upper slope. 



83. Psychotria inundata, Bentb. 3500 ft. Upper slope. 

 145, 232. Psychotria crassa, Bentb. ? House. Upper slope. 

 185. Psychotria, sp. ( = Scbombk. 1018 B and Appun. 1103). Upper slope. 



163, 320. Psychotria Imthurniana, Oliv., sp. nov. (Plate XLII. A. figs. 1-7.) Glaber- 

 rima ; ramulis gracilibus internodiis rectis subteretibus, foliis subsessilibus anguste vel 

 lineari-lanceolatis acuminatis basi obtusissimis subeordatisve, costa proininula, 

 nervis secundariis utrinque circ. 10-15 incurvis prominulis nervum marginalem attin- 

 gentibus cum venulis intermediis, stipulis basi connatis deltoideo-subulatis brevibus, 

 cymis terminalibus pedunculatis 9-15-fioris laxiusculis bracteis obsoletis, calycis 

 limbo 4-dentato dentibus deltoideis, corollaa tubo cyliudrico limbo 2-plo longiore. 

 Roraima, upper slope and ledge, 7000 ft. 

 Polia tenuiter eoriacea flavescentia, lf-2J poll, longa, J-f poll. lata. Plores 2-2J lin. 



longi ; corollas limbus 2-2| lin. diam., lobis ovatis obtusis, tubo intus piloso. Ovarium 



biloculare. 



191, 214. Psychotria, sp. (Imperfect.) Upper slope and path. 

 291. Psychotria ? sp. Path to upper savannah. 



Psychotria concinna, Oliv., sp. nov. (Plate XLII. B. figs. 8-15.) Glaberrima, 

 ramulis gracilibus atro-purpureis, foliis petiolatis parvis coriaceis ovalibus acutis v. 

 acutiusculis, supra costa subprominula nervis lateralibus obsoletis, subtus costa pro- 

 minente nervis secundariis utroque latere 7-10 prominulis patentim curvatis nervum 



