INDEX. 



601 



Hooker, Dr. Joseph Dalton, his dis- 

 covery of sporules in Lepidostrobus, 

 588 ; his essay on' Lepidostrobus, 



589, 590 

 Horsfield, Dr. Samuel, drawings and 



specimens of Rafflesia Arnoldi, 

 brought to England by, 373 ; 



account of a iigure of a second 



species of Rafflesia observed by him 



in Java, 388-9 

 Hove, Mr., plants collected by him in 



the vicinity of Cape Coast, 152 

 Hoya carnosa, dehiscence of its 



pollen mass, 527 ; rupture of the 



mass and production of pollen 



tubes, 529, 530; circulation in its 



pollen-tubes, 530 note 

 Hydnora compared with Rafflesia, 



388, 396-7, 401—410; structure 



of its ovarium, 404 ; ovula, 407 ; 



seeds and embryo, 409, 410 ; its 



characters, 427 

 Hydnora Africana, description of, 



416-19; H. Americana, characters 



of, H. triceps, characters of, ibid. 

 Hydnorese, a tribe of Rafflesiaceae, 



411 ; its characters, 427 

 Hydrolese, foundation of the order and 



its affinities, 135 

 Hydropeltidese, a section of Nymphsea- 



cese, arrangement of ovula in, 556 

 Hymenanthera, a genus intermediate 



between Violese and Polygalese, 



125 

 Hypselyptum, a corruption of the name 



Hypeelytrum, 144 

 Hypselytrum, observations on the 



structure of the genus, 144-5 

 Hypoxidese, characters of the order 



and observations on its distribution 



in Terra Anstralis, 51 

 Hypoxis fascicularis, a species of 



Colchicum of the section Mono- 



caryum, 298—300 



Impregnation, difficulties regarding 

 the point of, in the ovulum, 453 ; 

 mode of, in Orchideae, 506—510 ; 

 artificial impregnation in, 538; in 

 Asclepiadese, 528-9 



Insects, frequency and necessity of 

 their aid in the impregnation of 

 Orchideae and Asclepiadese, 531 ; 

 a single insect capable of impreg- 

 nating many flowers, 538 ; insect- 



forms of flowers inOphrys intended 

 to deter and not to attract insects, 

 538 

 IridesB, the double stigmata of several, 

 559 ; their relation to the cells of 

 the ovarium in 559, 560 



Jack, William, letter to Mr. Brown 

 on the gigantic flower, afterwards 

 called Rafflesia, 394 



Junceaj, observations on the order, 

 and on its distribution in Terra 

 Australis, 52, 439 ; observations on 

 Kingia, Dasypogon, Calectasia, and 

 Xerotes, as referrible to the order, 

 439 



King, Philip Parker, plants collected 



during his voyages round the coasts 



of New Holland, 338 

 Kingia, a plant of very similiar habit 



to Xanthorrhcea, 51, 435 

 Kingia, characters and description of 



the genus, 433 — 439 ; observations 



on its ovulum, 439, 447 

 Koniga, characters of the genus, with 



observations on its affinities and on 



the structure of its septum, 266, 



268 



Labiatae form with Verbenacese, a 

 natural class, 38, 135 



Labiates, observations on the order, 

 and on its distribution in Terra 

 Australis, 38 ; on the species found 

 in the vicinity of tlie Congo, 135 ; 

 in Central Africa, 297 



Lardizabalese, arrangement of ovula in 

 the carpels of, 879 note, 555 



Lasianthera, too imperfectly known to 

 determine its place, 151 



Laurinse, with the exception of Cas- 

 sytha, supposed to be unknown on 

 the continent of Africa, 150 



Leea and Aquilicia, only difl'erent 

 names for the same genus, 151 ; 

 nearly related, if not absolutely 

 belonging, to Viniferse, ibid. 



Legnotis, its characters and affinity, 

 119 



LeguminosEE, a natural class divisible 

 into at least tliree orders, 22; 

 number of species published, and of 

 species found in Terra Australis, 

 22 ; of species found in the vicinity 



