553 
Natural Orders .] APPENDIX. 
, North Asia, and lastly in the South of Europe, where, however, only two 
species have been observed, namely, Anagyris foetida, and Cercis Siliquas- 
trum ; but the latter having a straight Embryo and a habit approaching to 
that of Bauhinia, rather belongs to Lomentace®. 
Among the Diadelphous genera of Terra Australis the most remark- 
able in habit and structure, namely Platylobium, Bossnea, Hovea, Scottia, 
and Kennedia, are found chiefly in the principal parallel and higher lati- 
tudes ; within the tropic the greater part of these cease to exist, and 
most of the genera which there occur are common toother countries, espe- 
cially India. 
ATHEROSPERME/E.* Jussieu in his excellent memoir on Moni- 
mie8e*t“ has referred Pavonia of Ruiz and Pavonand Atlierosperma of Labil- 
lardiere to that order, from the other genera of which, namely, Arobora, 
Monimia, and Ruiza, they appear to me very different, not only in the inser- 
tion of the seed, in the texture of the albumen, and Relative size of the Em- 
bryo, but in having anther® similar to those of Laurin®. I separate them 
therefore into a distinct family with the name of Atherqspermeje. The 
propriety of this separation is confirmed by the discovery of two New Hol- 
land plants, evidently belonging to this family, but which have hermaphro- 
dite flowers ; a structure not likely to occur in Monimie®, in which what 
has been termed calyx is more properly an involucrum. 
The place of Atherosperme® in the natural series is not very easily 
determined. It is singular that differing so widely as they certainly do in most 
parts of their structure from Laurin® they should notwithstanding agree with 
them, in the ceconomy of their Anther®, and very remarkably with some of 
them in their sensible qualities. Of the three Australian plants of this ordei 
* Athejiospkrme*. Flores diclines vel hermaphroditi. Calyx monophyllus, limbo 
diviso: lacinis seepe duplici serie, interioribus omnibusve semipetaloideis : SquamulcefaUcis 
in femineis et hermaphroditis. Corolla nulla. Stamina in masculis floribus numerosa, 
fundo calycis inserta, squamulis aucta ; in hermaphroditis pauciora, fauce imposita : An- 
thcrce adnata;, biloculares, loculis valvula longitudinali a basi ad apicem dchiscenti. Ovaria 
nno plura, ssepius indefinita, pionosperma, ovulo erecto : Styli simplices, nunc laterales v. 
basilares : Stigmata indivisa. Pericarpia clausa scminiformia, stylis persistentibus plu- 
mosis aristata, tubo aucto calycis inclusa. Embryo erectus brevis, in basi albuminis carnosi 
mollis. 
Arbores. Folia opposita simplicia exstipulata. Pedunculi axillares, uniflori. 
f Annates du museum, 14, p. 1 16- 
4 B 
VOL. XI. ^ " 
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