(Edogonium punctatostriatum, De 
Bary, mentioned, 127, 129. 
pyrulum, Wittr., 127. 
var. obesum, Wittr., 128. 
reticulatum, West A West f.*, 
129. 
spirale, Hirn, 128; figs, de- 
scribed, 212. 
var. acutum, West & 
West f.*, 128. 
stellatum, Wittr., 198. 
suboctangulare, West A West f.*, 
127; figs. described, 212. 
Oldenlandia foetida, Forst., 282. 
Orzacrzx, 286. 
Olyra micrantha, H. B. & K., 74. 
OnaenRACEX, 30. 
OnaGRARIACER, 280. 
Oncidium nigratum, Lindl., 12. 
orthostates, Ridl., 64. 
Oncosperma fasciculatum, Thw., 436, 
474. 
Onychonema leve, Nordst., 193. 
uncinatum, G. C. Wallich, 192; 
fig. described, 2165. 
var. subglabrum, West A 
West f.*, 192. 
Oocystis elliptica, West, 199. 
gigas, Arch., 199. 
var. incrassata, West, 199. 
OrnrocrrrEz, 130. 
Ophiocytium capitatum, Wolle, 130. 
var. longispinum, 
Lemmerm., 130. 
cochleare, A. Br., 130. 
parvulum, A. Br., 131. 
Ophioglossum nudicaule, Linn., 312. 
pendulum, Linn., 312. 
Oplismenus compositus, Beauv., 303. 
Oncui1DACRX, mentioned, 12, 58. 
OncarpEz, 269, 297. 
Orchids of Roraima, 58-65. 
Oreodoxa regia, H. B. & K., 473. 
Osbeckia buxifolia, Arn., mentioned, 
131, 201. 
Oscillaria Frolichii, Kuetz., 204. 
maxima, Kuetz., 204. 
Oscillatoria acuminata, Gomont, 204. 
animalis, Agh., 204. 
imperator, Wood, 204. 
.. limosa, Agh., 204. 
princeps, Vauch., 204. 
tenuis, Agh., 204. 
Osmunda, Tourn., 237. 
cinnamomea, Linn., 254. 
Claytoniana, Linn., 241. 
D 
INDEX. 
Osmunda regalis, Linn., 241, 243. 
Osmundites Dowkeri, Carruth., 254. 
schemnicensis, Unger, 254. 
Osteomeles anthyllidifolia, Lindl., 
267, 278. 
Oxalis corniculata, Linn., 275. 
distans, A. St.-Hil., 91. 
Schomburgkiana, Prog., 21. 
Pachytesta, Brongn., 389. 
Pæpalanthus biformis, N. E Br.*, 71. 
capillaceus, Klotzsch, 72. 
eriocephalus, Klotzsch, 69. 
falcatus, Koern., mentioned, 70. 
flavescens, Koern., 13, 69. 
fraternus, N. E. Br.*, 69; 
mentioned, 13. 
plantagineus, Koern., mentioned, 
". 
Roraimse, Oliver, 13, 69. 
Schomburgkii, Klotzsch, 70; 
mentioned, 13. 
simplex, Mig., mentioned, 72. 
subcaulescens, N. E Br.*, 71. 
subtilis, Mig., 72. 
umbellatus, Kunth, 72. 
uncinatus, Gardn., mentioned, 
1L 
Pallavicinius Wallisii, J. B. Jack, 16, 
95. 
Das, mentioned, 13, 300. 
ParwELLACEE, 195; mentioned, 211. 
Palms, Air-spaces, 434; Anatomy 
and Histology of Roots, 430; 
Anatomy of Roots, 427; Endo- 
dermis, 438; Fibrous Zone of 
Sclerenchyma, 439; Inner Cortex, 
433; Lignified Elements of the 
Cortex, 434; Limiting Layer, 
432 ; Mucilage-sacs, 437 ; Origin 
of Adventitious Roots in the Stem, 
430; Passage of Roots through 
the Cortex of the Stem, 430; 
Pericycle, 439; Phloem, 441 ; 
Root-apex, 431; Root-cap, 432 ; 
Root-cylinder, 443; Tegumentary 
System, 433 ; Xylem, 441. 
Panpanace®, 300. 
Pandanus odoratissimus, Linn., 265, 
300. 
sp., 300. 
Panicum ambiguum, Trin., 303. 
chnoodes, Trin., 74. 
eligulatum, A. E. Br.*, 13, 73. 
loreum, Trin., mentioned, 74. 
maximum, Jacq., 302. 
Panicum nervosum, Lam., 13. 
pilipes, Nees, 303. 
sanguinale, Linn., 303. 
Parime Mts., Venezuela plants absent 
from, 7. 
Parmelia dictyorhiza, Massee *, 102; 
mentioned, 16. 
hypotropa, Nyl., 102. 
perforata, Achar., 16, 102. 
Paspalum conjugatum, Berg, 302. 
distichum, Linn., 302. 
scrobiculatum, Linn., 302. 
stellatum, Fluegge, 13. 
Passiflora quadrangularis, Zinn., 281. 
Quelchii, N. E. Br.*, 31; figs. 
described, 103. 
PassrrLoRACEJ, mentioned, 9, 31, 
281. 
Patima, Aubl., mentioned, 37. 
laxiflora, Benth., 36. 
Pavonia cancellata, Cav., 21. 
speciosa, H. B. & K., 21. 
Pecopteris dentata, Lindl. & Hutt., 252. 
denticulata, Brongn., 253. 
recentior, Phillips, 252. 
whitbiensis, Brongn., 252, 253. 
Williamsoni, Brongn., 252. 
Pectis elongata, H B. 4 K., 10. 
Pediastrum Boryanum, Menegh., 196. 
clathratum, Lemm., 196. 
duplex, Meyen, 196. 
enoplon, West, 196. 
Napoleonis, Ralfs, 196. 
pertusum, Kuetz., 196. 
Tetras, Ralfs, 196. 
Pellionia elatostemoides, Gaud., 296. 
Penium adelochondrum, Ein. men- 
tioned, 135. 
Clevei, Zund., mentioned, 134. 
closterioides, Ralfs, 135. 
Digitus, Bréb., 134. 
i var. constrictum, West, 134. 
Haynaldii, Schaarschm., 136. 
heterotaphridium, West A 
West f.*, 185; figs. de- 
scribed, 212. 
inconspicuum, West, 135. 
lagenarioides, Roy, mentioned, 
135. 
var. sydneyense, Racib., 
mentioned, 135. 
lamellosum, Kuetz., 134. 
lanceolatum, W. B. Turn., 134; 
fiz. described, 212. 
var. subcylindricum, West 
d West f.*, 134. 
