610 



INDEX. 



areolje or corpusculain the albumen 

 of all the European genera of Co- 

 niferse, 574-5 



Scitamiaeas, structure of flower in, 49 ; 

 formation of albumen in, 452 



Scoresby, Captain William, catalogue 

 of plants collected in Spitzbergen 

 by, ]79 



Scrophularinse, observations on the 

 species found in the vicinity of the 

 Congo, 135 ; in the collection from 

 Central Africa, 296 



Seeds never produced entirely naked, 

 359 



Seeds and fruits, on some remarkable 

 deviations from the usual struc- 

 ture of, 357 



Seguieria forms with Petiveria, a sub- 

 division of Phytolaceee, 140 



Sempervivum teotorum, monstrosi- 

 ties in, illustrating the origin of 

 ovula, 563 



^esamese, one species in the collection 

 from central Africa, 295 



Smeathman, Henry, number of species 

 of plants collected by him at Sierra 

 Leone, 101 



Smeathmannia referred to Passiflorese, 

 its character and affinities, 386-7 

 note, 121, 381 



Smith, Christian, plants collected by 

 him in the vicinity of the Congo, 

 99, 173 



Smith, Thomas, his observations on 

 the general existence of the fora- 

 men in the membranes of the ovu- 

 lum, 411 



Sowerby, G. B., jun., his drawings of 

 Triplosporite, 585 



Sphenoclea Zeylanica, identity of 

 specimens from Congo, and various 

 parts of Africa, Asia, and America, 

 170,171 



Spiral tubes produced on the surface 

 of the aerial roots of Orchideie, 548 ; 

 on the inner surface of the corolla 

 of Ceropegia, 549; in the wool 

 enclosing the spines of Mammil- 

 laria and Melooactus, ibid. ; in the 

 coma of the seed of an Apocyneous 

 plant from Brazil, ibid. 



Spiral vessels, stratum of, beneath the 

 outer coat of the seed of Casuarina, 

 46 



Spiral fibrous, tubes containing and 



emitting mucus in Blennodia and 

 Matthiola, 316 



Spiral vessels in the bulb-like seeds of 

 certain Liliaceous plants, 364 ; do 

 not appear to exist in any part of 

 Bafflesia Aruoldi, 377 ; shown to 

 exist in various parts, 412; exist 

 also in Hydnora, Cytinus, Bala- 

 nophora, Cynomorium and Helosis, 

 ibid. 



Spitzbergen, catalogue of plants col- 

 lected in, by Captain Scoresby, 

 179 



Stackhousese, chsiracters of the order 

 and observations on its distribution 

 in Terra Australis, 27 



Stelis, spirally striated cells in, 515 



Sterculia, several species produce 

 seeds which become naked by the 

 early regular dehiscence of the 

 ovarium, 363 



Sterculiaceee, compared with Bafiiesia, 

 388-9 



Stigma, on the relative position of the 

 divisions of stigma and parietal 

 placentae in the compound ovarium 

 of plants, 553 — 563 ; origin and 

 type of, 558 ; necessarily consist- 

 ing of two parts, not terminal but 

 lateral, 558, 560; whence inferred, 

 ibid. ; the two stigmata of 

 each carpel generally confluent, 

 559 ; exceptions in Parnassia, Cru- 

 ciferse, and Papaveracese, where 

 the stigmata as well as the pla- 

 centae of the adjoining carpels are 

 conflueiit, ibid. ; how proved, ibid. ; 

 in Iridese, also, where the stigmata 

 alternate with the cells of the com- 

 pound trilocular ovarium, ibid, 

 characters derived from modifica- 

 tions of stigmata of less value, 

 560; composition of, in Orchidese, 

 501-4 ; functions of its different 

 lobes in, 503 ; relative position of 

 stamina and stigmata, 504 



Sturt, Captain Charles, plants found 

 in his expedition into the southern 

 interior of Australia, 313, 387; in 

 his expeditions to the Darling, 

 Murrnmbidgee and Murray, 338 



Style, a mere attenuation of the whole 

 body of the ovarium, 558 



Stylidea;, observations on the order 

 and its distribution in Terra Aus- 



