APPENDIX. XXXVU 



ohovata, and probably cuneata, one of the anthers is abortive, 

 a circumstance which approximates the genus to Conosper- 

 mum and Synaphca ; but in A. sericea, terminalis, and perhaps 

 the other filiform-leaved species, the anthers are all fertile. 



It is not a little remarkable that in so diversified an order 

 as this, scarcely any tendency to vary from the small num- 

 ber of types of structure recognized thirty years since by 

 Dr. Brown should be discoverable; there is nothing whatever 

 among the numerous undescribed species from Swan River 

 which requires the establishment of a new genus, with the 

 solitary exception of Mcmglesia. That genus was named by 

 Endlicher in compliment to Captain James Mangles, R.N. 

 and Robert Mangles, Esq. his brother, to whose exertions 

 the country owes the greater part of the plants as yet intro- 

 duced from this colony into our gardens ; and it appears to 

 be well distinguislied from Grevillea by the style being 

 thickened in a very remarkable manner a little below the 

 stigma, while the stipes of the ovary is unusually long. 

 Three species only are yet known ; all from Swan River, 

 namely M. tridentifera, vestita, and glabrata,^^^ all small 

 ^shrubs with three-lobed or trident-shaped leaves, and nume- 

 rous clusters of small flowers seated on filiform stalks ; but 

 with regard to the two Grevilleas which Brown calls Cono- 

 gyne, and which Endlicher is inclined to refer to Manglesia, 

 it does not appear to me certain that either of them belongs 

 to it, and G. triternata certainly does not. 



Miscellaneous Exogens. 



There are no other orders of Exogens sufliciently re- 

 markable, as to the proportion they bear to the rest of the 

 Flora, to require especial notice ; but there are several genera 

 belonging to different orders, concerning which it is desirable 

 to make a few observations. 



Of the beautiful genus Tetratheca there are many spe- 

 cies, all apparently peculiar to the colony ; and, what is 

 curious, belonging to the pentamerous division of the genus. 



(i8.i) Manglesia glabrata ; undique glaberrima, foliis cuneatis triplinerviis apice 

 trifidis lobis trlangularibus puiigentibiis, racemis laxis inultifloris foliis lon- 

 gionbus, apicibus calycum sphaericis. 



