Page:Miscellaneousbot01brow.djvu/614

596 and its distribution in Terra Australis, 11, 12

Buxbaumia, character of the genus, and observations on its structure and affinities, 351

Bywater, Mr., his microscopical observations referred to, 485-6

Cadaba farinosa, observations on, 276

Cæsalpineæ, observations on the order and on its distribution in Terra Australis, 23; species found in the vicinity of the Congo, 110; in Central Africa, 294

Caley, George, plants collected by him in New South Wales, 6; species of Eucalyptus observed by him, 18

Calyx, position of the fifth segment in reference to the axis of the spike in Polygaleæ, Lobeliaceæ, Leguminosæ, and Rosaceæ, 292

Calyx and corolla, distinction between, illustrated by Euthales and Velleia, 33; by Franklandia, 81

Canna Indica, probably of American origin, 158

Canneæ, structure of flower in, 49

Capparideæ belonging to the same natural class as Cruciferæ, 272; observations on the order and on the species found in Central Africa, 272—280; number of placentæ in, 273

Capparis sodada, observations on, and on another species from Central Africa, 279, 280

Capsicum, arguments in favour of its American origin, 158

Carallia, why referred to Rhizophoreæ, 119

Carex, structure of flower, 54

Caryophylleæ, species of, in the collection from Central Africa, 285

Cassava brought from America to the banks of the Congo, 155

Cassia, observations on the phyllodineous species of, 327, 339; and on those with a single pair of caducous foliola, &c., ib.

Cassuviæ, observations on the order and the species found in the vicinity of the Congo, 112

Casuarina, spiral vessels in the seeds of, 46, 549

Casuarineæ, observations on the order, and on its distribution in Terra Australis, 45

Cedreleæ not found in Africa, 151

Celastrinæ, characters of the order and observations on its distribution in Terra Australis, 27

Centrophorum, a genus of grasses formed on an erroneous conception of its characters, 302

Ceropegia, spiral fibres in the hairs of the corolla in, 549

Chailleteæ, characters and affinities of the order, with observations on the species found in the vicinity of the Congo, 125

Chalaza, its function, 440; merely the termination of raphe, 450

Chenopodeæ, how distinguished from Urticeæ, 138; and from Phytolaceæ, 139

Chloris Melvilliana, 183

Chrysobalaneæ, distinctive characters of the order, enumeration of the genera composing it, and observations on the species found in the vicinity of the Congo, 115

Circulation in threads or currents in the cells of the jointed hairs of the filaments of Tradescantia Virginica, 513 note.

Cistineæ found in Central Africa, 288; difficulty regarding the mode of impregnation in, 453

Clapperton, Captain, plants collected by, in Central Africa, 257, 259, 303

Clarckia pulchella, form of particles within the grains of pollen in, 466-7; motions of the particles, ibid.

Cleome, observations on the genus, its subdivisions, and the species found in Central Africa, 273—276

Cleome (Gymnogonia) pentaphylla, regarded as a native of Africa and India, 275

Clianthus, observations on the New Holland species of, 321-2; on Clianthus Dampieri, ibid. and 339.

Cochlearia armoracia, monstrosities in, illustrating the origin of ovula, 563

Cocoinæ, a very natural section of the order Palmæ, 141