298 PROF. OLIVER ON NEW PLANTS FROM RORAIMA. 



Plate XXXVIII. 



Figs. 1-6. (A.) Ravenia ruellioides, Oliver, sp. n. 1, portion of plant in flower; 2, calyx and pistil; 3, 



corolla, laid open ; 4, anther, back and front ; 5, pistil ; 6, vertical section of ovary and disk. 



All enlarged. 

 Figs. 7-13. (B.) Myrcia (§ Aulomyrcia) Roraimm, Oliver, sp. n. 7, plant; 8, bud; 9, expanded flower; 



10, calyx, the petals and stamens removed; 11, stamen, back and front; 12, longitudinal 



section of ovary and calyx-tube; 13, transverse section of ovary. 



Plate XXXIX. 



Figs. 1-9. (A.) Myrtus stenophyfla, Oliver, sp. n. 1, plant in flower and fruit; 2 & 3, leaf, above and 

 below ; 4, expanded flower ; 5, calyx and bracteoles ; 6, stamen, front and back view ; 7, trans- 

 verse section of ovary ; 8, fruit ; 9, seed. All enlarged. 



Figs. 10-18. (B.) Microlicia bryanthoides, Oliver, sp. n. 10, plant in flower and fruit; 11, leaves; 

 12, bud; 13, expanded flower; 14, longer, 15, shorter stamens; 16, apex of ovary and style; 

 17, fruit; 18, seed. All enlarged. 



Plate XL. 



Figs. 1-6. Crepinella gracilis, March. , sp. n. 1, plant in flower ; 2, bud; 3, expanded flower ; 4, stamen, 

 front and back view ; 5, calyx-tube and ovary ; 6, longitudinal section of ovary. All 

 enlarged. 



Plate XLI. 



Figs. 1-8. Sciadophyllum coriaceum, March., sp. n. 1, plant in flower; 2, bud; 3, coherent petals; 

 4, petal apart ; 5, anther, back and front ; 6, ovary ; 7, transverse section of ovary ; 8, young 



fruit. All enlarged. 



Plate XLII. 



Figs. 1-7. (A.) Psychotria Imtliurni ana, Oliver, sp. n. 1, plant in flower; 2, stipules; 3, expanded 



flower ; 4, corolla, laid open ; 5, stamen, back and front ; 6, ovary and style ; 7, longitudinal 



section of ovary. 

 Figs. 8-15. (B.) Psychotria concinna, Oliver, sp. n. 8, plant in flower; 9, stipules; 10, flower ; 11, 



corolla, laid open; 12, anther, back and front; 13, ovary and style; 14, epigynous disk; 



15, longitudinal section of ovary. All enlarged. 



Plate XLIII. 



Figs. 1-8. (A.) Baccharis Vitis-Idaa, Oliver, sp. n. 1, male plant, and 2, female plant ; 3, male capi- 

 tulum ; 4, floret; 5, seta of pappus; 6, stamens; 7, style; 8, female floret. All enlarged. 



Figs. 9-16. (B.) Calea ternifolia, Oliver, sp. n. 9, plant in flower; 10 & 11, scales of involucre; 

 12, palea of receptacle ; 13, floret; 14, seta of pappus ; 15, anthers; 16, style. All enlarged. 



Plate XLIV. 



Figs. 1-6. (A.) Ledothamnus guyanensis, Meissn. 1, plant in flower; 2 & 3, leaves; 4, sepal; 5, 



stamens, front and back view ; 6, pistil. All enlarged. 

 Figs. 7-11. (B.) Utricularia (§ Orchidioid.es) Campbelliana, Oliver, sp. n. 7, different views of plant 



in flower , 8, ampullae ; 9, calyx-lobe ; 10, lower lip of corolla and spur ? ; 11, stamens. All 



enlarged. 



