170 INDEX. 
Cyclotella compta, Kitz., 148. 
Kützingiana, Chauvin, 148. 
Meneghiniana, Avitz., 148. 
var, rectangulata, Grun., 148. 
minutula, Kütz., 148. 
operculata, Avitz., 148. 
Cylindroeystis, Menegh., 107. 
subpyramidata, W., $: G. 5, West, 107. 
Cylindrospermum, Kitz., 172. 
Goetzei, Schmidle, 172. 
Cymatopleura, W. Sm., 160 ; of Victoria 
Nyanza, 91. 
apiculata, W. Sm., 167. 
Nyansæ, G. 5. West*, 167; men- 
tioned, 85, 91. 
Solea, W. Sm., 166; a plankton 
Diatom, 85; mentioned, 85, 
-— var. laticeps, О. Miill., 167. 
Cymbella grossestriata, O. Müll., 159. 
— — var, Tanganyike, G. S. West *, 
(err. = Cocconema), 92. 
levis, Naos 159. 
leptoceros, Rabenh., 159, 
maculata, А. Schm., 160. 
turgida, Greg., 159. 
Cymbopogon cymbarius, Rendle,* 241. 
Cymodocea nodosa, А schers., from Red Sea, 
445. 
Cynoglossum geometricum, Baker $ С. 
Н. Wright, 268; mentioned, 231. 
Cynorchis  anacamptoides, ArünzlL, 237; 
mentioned 232. 
chinensis, Rolfe *, 309. 
gracilis, Kränzl., mentioned, 369. 
Cyperacew, fossil, 220; from Fokien, 371; 
from Ruwenzori, 240. 
Cyphella Cheesmani, Massee *, 411. 
Cypripedium barbatum, Lindl., 330. 
Cyrtandra cupulata, Ridl., 319. 
Cyrtanthus, Forst., mentioned, 232, 238, 
carneus, Lindi., mentioned, 238, 
Cystoseira Myrica, J. Ag., 443. 
Dacrydium Becearii, Parl, distrib., 202, 
204. 
elatum, Wali., 333. 
Dactylococcopsis, Hansg., 184. 
acicularis, Lemm., mentioned, 185. 
africana, G. 5. West*, 184; mentioned, 
91. 
Daphnoideæ from Ruwenzori, 292, 
Davallia pinnata, var. gracilis, Hook. $ 
Baker, 334. 
Debarya, Wittr., 104. 
africana, (7, 5. West *, 104. 
immersa, W. West *, 104. 
Decameria Jovis Tonantis, Welw., 42]. 
Dehaasia lancifolia, Rid/.*, 320. 
Delitschia bisporula, Hans., 415. 
sp., 415. 
Delphinium, Tourn., in Mexico, 431 ftnote, 
Dendrobium aduncum, Wall., 368. 
Anthrene, Ridl., mentioned, 394. 
bifarium, Lindl., 324. 
cornutum, Hook. f., 324. 
gracile, Lindl., mentioned, 323. 
Hasseltii, Lindi., mentioned, 324, 
Kelsalli, Ridl., 323. 
kuhlii, Lindl., mentioned, 324. 
longipes, Hook. f., 323. 
megaceras, Hook. f., mentioned, 324. 
sp., 325. 
subflavidum, Аи. *, 324, 
uniflorum, Grif, 323. 
Density of Species (Gadow ), 437. 
Desmidiacee, geogr. peculiarities, 82 ; 
granules formed in, 282; of Lake Nyasa, 
90; of Tanganyika, 107, 105; of 
Victoria Nyanza, 91. 
Desmodium lasiocarpum, DC., 947; men- 
tioned, 229, 
Scalpe, DC., 247; mentioned 230. 
Diachæa leucopoda, Rost., 413. 
Dianthera, Gronov., 7. 
sp., Benth., 9, 11, 13. 
Diatoms from Lake Nyasa, 18, 90; in 
Plankton of Tanganyika Exped., 82, 62 ; 
Victoria Nyanza, 91. 
Dicliptera maculata, Nees, 271. 
Dicotyledons, age, 71; derivation, 71 ; 
embryo-sae, 32; 
point of, 39. 
Dictyospheeria favulosa, Decne., 442, 
Dictyospheriew of Tanganyika, 144. 
Dictyospheerium, Näg., 144. 
pulehellum, Wood, 144. 
Dictyota dichotoma, J. Ag., 444. 
Didymocarpus, Wall., 302. 
flavobrunnea, Ridl., 318. 
grandifolia, Rid/.?, 318. 
heterophylla, Ridl., mentioned, 319. 
hispida, Rid/., mentioned, 319. 
lanales as starting 
