520 INDEX. 
Ochna leptoclada, Oliver, 36. 
natalitia, Engler § Gilg, 37. 
pulchra, Hook., 37. 
Ochnaceew of Gazaland, 36. 
Ocimum Knyanum, Гале, 170. 
odontosepalum, 5. Moore *, 170. 
suave, Willd., 170. 
Odina edulis, Sond., 50. 
sp., mentioned, 10. 
Stuhlmanni, нде, 50. 
(Edogoniacei of South Orkneys, 829; 
mentioned, 294, 
Cidogonium spp., 300, 318, 320, 521, 529, 
404, 414, 415, 420, 422; tab., 308-423; 
mentioned, 996. 
Olacines of Gazaland, 43, 
Olax Stuhlmanni, Engler, 43, 
Oldenlandia Bojeri, Hiern, 78. 
caffra, Ecl. § Zeyh., 18. 
cynanchia, A. Schum., 72. 
hirtula, О. Kuntze, 78. 
natalensis, О. Kuntze, 73. 
trinervia, Retz., 78. 
Welwitschii, Hern, 75. 
Olea Woodiana, Knob., 136. 
Oleace: of Gazaland, 135. 
Оппа acuminata, A/ofzsch, mentioned, 
73. 
vanguerioides, Bak. fil.*, 72, 
Oliniace:e of Gazaland, 72. 
Oliver, F. W., Communications by (Daker), 
275; (Prankerd), 461. 
Olyra latifolia, Linn., 224. 
Oncinotis chirindiea, S. JMeore*, 141; 
mentioned, 6. 
inandensis, Wood & Evans, mentioned, 
142. 
Oncoba spinosa, Forsk., 23. 
Oocystis, mentioned, 307. 
gleocystiformis, mentioned, 313. 
lacustris, Chod, 313, 399, 404, 407, 
410, 417. 
forma nivalis, F. E. Fritsch *, 
300, 313, 326. 
parva, W. $ G. 5. West, 399, 404. 
solitaria, Wittr., 320. 
Opilia amentacea, Roxb., 43. 
Ophiocaulon cissampeloides, Masters, 74. 
Oplismenus africanus, Beauv., 224. 
Orchis maculata, ecol., 363, 382. 
mascula, ecol., 259-268, 371, 373, 382. 
Orchidacew of Gazaland, 207-209. 
Oriri, 57. 
Orkneys, South, Freshwater Algæ of the 
(Fritsch), 203-338, 
Ormosia angolensis, Baker, 61 ; mentioned, 
7-10. 
Ornithogalum pyrenicum, ecol., 374. 
Orthorrhynchium elegans, Broth., 454. 
Orthosiphon, mentioned, 174. 
Woodii, Gürke, 172. 
Orthotrichacese of New Zealand, 445- 
448. 
Orthotrichum sp., mentioned, 453. 
Orygia decumbens, Forsk., 75. 
Osbeclia Swynnertonii, Bak. fil.*, 71. 
Oscilatoria Agardhii, Gomont, tab. 400— 
423. 
brevis, Avifz., 333. 
spp., 426, 
splendida, Grev., 333. 
subtilissima, Kitz., 334. 
tenuis, Ag., 334. 
forma sordida, Kitz., 934. 
Oscillatoriaceæ of South Orkneys, 333. 
Osmunda, sporangia, 486, 
regalis, Linn., 245. 
Osteospermum moniliferum, Linn., 123. 
Osyris abyssinica, Mochst., 189. 
Otiophora inyangana, N. E. Br., 102. 
Otomeria dilatata, Hiern, 77. 
Ottelia lancifolia, Rich., 207. 
Oxalis Acetosella, ecol., 375. 
corniculata, Linn., 35. 
semiloba, Sond., 35. 
Oxyanthus Gerrardi, Sond., 82. 
Monteiroæ, №. E. Br., 82. 
Schlechteri, K. Schum., 82. 
sp., mentioned, 11. 
speciosus, DC., mentioned, 83. 
Swynnertonil, S. Moore *, 82. 
-— var. breviflorus, S. Moore *, 83. 
Oxytenanthera abyssinica, Munro, 235, 
Pachystela cinerea, Pierre, 133. 
Pahudia quangensis, Prain, 62. 
Palaeozoic Seed, Lagenostoma ovoides, HL, 
(Prankerd), 461-490. 
Paleozoic seeds, pollination, 482. 
Palmacer of Gazaland, 219. 
Pancratium trianthum, Herb., 212. 
