298 PROF. OLIVER ON NEW PLANTS FROM RORAIMA. 
Рілте 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) Roraime, Oliver, вр. п. 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 XX XIX. 
Figs. 1-9. (А.) Myrtus stenophylla, 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; 8, expanded flower; 4, stamen, 
front and back view; 5, calyx-tube and ovary; 6, longitudinal section of ovary. АП 
enlarged. 
PLATE XLI. 
Figs. 1-8. Sciadophyllum coriaceum, March., зр. п. 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. 
Puare XLII. 
Figs. 1-7. (A.) Psychotria Imthurniana, 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. 
Prate XLIII. 
Figs. 1-8. (А.) Baccharis Vitis-Idea, Oliver, sp. п. 1, male plant, and 2, female plant; 3, male capi- 
tulum ; 4, floret; 5, seta of pappus ; 6, stamens; 7, style; 8, female floret. АП 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 (§ Orchidioides) Campbelliana, Oliver, вр. n. 7, different views of plant 
in flower, 8, ampullæ; 9, calyx-lobe; 10, lower lip of corolla and spur?; 11, stamens. All 
enlarged. 
