PROF. OLIVER ON NEW PLANTS FROM RORAIMA. 279 
155. ViNCETOXICUM (ORTHOSIA) HIRTELLUM, Oliv., sp. nov.; volubile, caule gracili pilis 
brevibus subpatentibus hirto, foliis ovali-oblongis rigidiuscule apiculatis, marginibus 
revolutis, supra hirtellis in sicco rugulosis, subtus przecipue in costa pilis patentibus 
hirtis, cymis sessilibus v. brevissime pedunculatis pauci- v. pluri-floris foliis brevi- 
oribus, floribus subsessilibus v. pedicello calyce vix longiore, corolle lobis angustis 
intus hirsutis, coronz segmentis 5 basi in annulo brevissimo continuo insertis 
lineari-lanceolatis gynostegium fere zequantibus, stigmate obtuso. 
Roraima. 
Folia 8-3 poll. longa; petiolus 75 poll. longus v. brevior. Flores } poll. longi 
Very much resembles in general facies Ditassa pauciflora. 
147. NEPHRADENIA LINEARIS, Benth. ? 
113. CURTIA (Schuebleria tenuifolia, Don). 5400 ft. 
47. LISIANTHUS AM@NUS, Ма. 5400 ft. 
306. LISIANTHUS lwTrHURNIANUs, Oliv., sp. nov. Gracilis, glaberrimus, caule inferne 
folioso teretiusculo internodiis folio brevioribus utrinque lineis elevatis duabus 
notatis, foliis coriaceis obovatis ellipticisve obtusis v. obtusiusculis margine anguste 
revolutis triplinerviis, pedunculo elongato cymis 3- 2-floris, floribus longe pedunculatis, 
calyce (3-3 poll. longo) 5-fido, lobis ovato-lanceolatis acutiusculis, corolle (2-poll.) 
tubo leviter dilatato, limbi lobis oblongo-ovatis acutis, filamentis elongatis gracilibus 
glabris inclusis, antheris oblongo-ellipsoideis inappendiculatis. 
Roraima, ledge and summit. 
Caulis 1-pedalis erectus v. basi decumbens. Folia 3-3 poll. longa, basi in petiolum 
angustata, 3-2 poll. lata. Pedunculus communis 3-6 poll. longus; bractez superiores 
lineares v. ovales. Discus hypogynus. 
In our specimens the limb of the corolla looks as though it might remain straight or 
even slightly incurved in flower. | 
188. LisrANTHUS aff. L. macrantho, sed calycis lobis acuminatis corolle tubum æquan- 
tibus. Upper slope. 
3. HELIOTROPIUM ай. H. fruticoso, conf. Н. strictissimum=Schombk. 185, 283, and 
573. Konkarmo. 
24. SOLANUM, an S. Convolvulus, Sendtn. ? (inadequate). Атароо В. 
” 
210. MELASMA ? SPATHACEUM, Oliv., sp. nov. ; scabrum, foliis suboppositis v. inferioribus 
alternis brevissime petiolatis ovato-ellipticis basi rotundatis v. leviter cordatis 
dentatis supra scabris, floribus pedunculatis in axillis superioribus pedunculis folio 
subzequilongis apice bibracteolatis, bracteolis linearibus v. oblanceolatis basi 
angustatis, calyce alabastro acuminato florifero antice fisso spathaceo, corolla exserta 
leviter incurva tubo superne leviter dilatato, limbi brevis lobis subzqualibus, lobo 
postico truncato emarginato, lateralibus obtusissimis, antico obovato-rotundato 
bifido. 
Roraima, upper slope. 
