Nepenthes tentaculata, Hook. f., 125; ecol., 
30, 31, 38. 
— var. tomentosa, Macfarl., 125; 
ecol., 41. 
villosa, Hook. f. 126; 
hybrid, 127, 
Nephelaphyllum 
153. 
Nephrodium cicutarium, Baker, 199. 
cucullatum, Baker, 198. 
ecol, 38; 
scapigerum, Hook. f., 
immersum, Hook., 198. 
truncatum, Presl, 198. 
Nephrolepis acuminata, Kuhn, 199. 
acuta, Presl, 199. 
biserrata, Schott, 199 ; ecol., 20, 22. 
davallioides, Kunze, 199. 
Nertera depressa, Banks d Soland., ecol., 
35. 
Neviusia, A. Gray, infl., 536. 
alabamensis, A. Gray, infl., 537. 
Nibong, 54. 
Nigella, Linn., infl., 531. 
sp., infl., 526. 
Nipa palm, mentioned, 25 ; 
9. 
Nitella acuminata, A. Braun, 213; ecol., 
16. 
— — var. indica, A. Braun, 213. 
Nitzschia obtusa, W. Sm., 251. 
Palea, W. Sm., 281. 
sigmoidea, W. Sm., 251. 
trvblionella, Hantzsch, 251. 
vermicularis, Grun., 251. 
Nostocaceæ of B. N. Borneo, 238. 
salt made from, 
Oak-tree, mentioned, 23. 
124; 
Ocimum Basilicum, Linn., 
22, 
ecol., 
Odontocyclos kurilensis, Turcz., 452. 
Odontosoria chinensis, J. Sm., 200; ecol., 
20. 
(Ecophila ants, pests on Fagræa racemosa, 
Jack, 111. 
(Edongoniales of B. N. Borneo, 216. 
Adogonium, Link, spp., 216. 
Oldenlandia diffusa, Roxb., 92; ecol, 13, 
15, 19. 
erythræoides, Mig., 92. 
Oleaceæ of B. N. Borneo, 110; of Shikotan, 
479, 443. 
INDEX. 
Onagraceæ of B. N. Borneo, 82; of Shiko- 
tan, 465-467, 443. 
Oncosperma filamentosum, Blume, ecol., 54. 
Ononis, Linn., infl., 562. 
arvensis, Linn., infl., 555. 
excisa, Taub., 394. 
Natrix, Linn., infl., 555. 
racemosa, Thunb., 395. 
rotundifolia, Zinn., infl., 554. 
Oocystis elliptica, West, 225. 
solitaria, Wittr., 225. 
Ophioglossaceæ of Shikotan, 499, 443. 
Ophiopogon malayanus, Kidl., 165; ecol., 
29, 34, 35. 
Oplismenus compositus, Beauv., ecol., 35. 
— f. velutina, Stapf, 186. 
Oranges, mentioned, 21, 27. 
Orchidaceæ of B. N. Borneo, 146-161. 
Orchideæ of Shikotan, 487, 442, 443. 
Orchids, ecol., 29, 35, 39, 440. 
Orchis aristata, Fisch., 487 ; distrib., 508. 
Origin of solitary axillary flower, 548-556, 
561; of solitary terminal flower, 
521 seq. 
Orography of B. N. Borneo, 5-7. 
Orthosiphon stamineus, Benth., 124. 
Oryza granulata, Nees & Arn., 187. 
Meveriana, Baill., 187 ; ecol., 17. 
minuta, Presl, 187. 
Ridleyi, Hook. f., 187 ; ecol., 15, 17. 
Oscillatoria Agardhii, Gom., 234. 
animalis, Ag., 234. 
geminata, Gom., 284. 
limosa, Ag., 234. 
nigra, Vauch., 234. 
princeps, Vauch., 234. 
Oscillatoriacese of B. N. Borneo, 216, 235- 
238. 
Otophora fruticosa, Blume, 66; ecol. 15 
17. 
imbricata, Blume, 66 ; distrib., 3; ecol., 
17. 
Oxalis Acetosella, Linn., 456 ; distrib., 503 ; 
ecol., 441. 
Oxycoccus palustris, Pers, 477; distrib., 
506; ecol., 441. 
Oxyria digyna, Hill, 484 ; distrib., 444, 507. 
reniformis, Hook., 484. 
Oxytropis retusa, Matsumura, 458 ; distrib., 
508 ; ecol., 440. 
Ozonium, Link, sp., 212. 
, 
