TBEMANDBAOE^. 69 



distinctly arranged at all ages in one verticel, are grouped in pairs 

 enveloped by each petal, its edges being folded inwards. The non- 

 articulate anthers have two cells or four cellules arranged in two rows. 

 The gynseceum, fruit, and arillate seeds are the same as in Tremandra ; 

 they have as many as four ovules^ in each cell and are generally 

 destitute of disk. Some twenty species have been described,^ 

 glabrous or glandular with alternate opposite or verticillate leaves. 



This small group * has often been conlsidered as representing the 

 regular form of the Polygalacem * ; and this was the opinion of E. 

 Brown. Others connect it rather with Lasiopetalce^ which the true 

 Tremandras really resemble much in aspect and foliage and by their 

 stellate hairs, but are very clearly distinguished from them by the 

 prsefloration of the corolla and the organisation of the androceum and 

 gynseceum. There is also believed to be an affinity between the 

 Tremandras and the Cheirantheras ^ of the group Pittosporees. The 

 Tremandracece seem to us placed between the Polygalacece on one 

 side, having the same gynseceum and nearly the same androceum and 

 from which they are separated by the regularity of the flowers ; and 

 the lAnacecB on the other, having their regular corolla, diplostemous 

 androceum, capsular fruit, the same direction of the regions of the 

 ovule, and from which they are separated by their mode of prseflora- 

 tion, the fewer number of ovary cells, and the difference in the 

 consistence of the albumen. All the Tremandraceee described, 

 twenty in number, are extra-tropical Australian ; they have no 

 known property. Platytheca verticillata (fig. 98-103) and several 

 Tetrathecas are valued in our green-houses as pretty ornamental plants. 



1 In the species from the south-west of iv. 241 ; vii. 241. 



Australia ; those ftom the east have hut one or ' Tremandrece E. Bk. Gen. Hem. (1814), 544 ; 



two. Beside the prolongation of the region of Misc. Works, ed. Benn. i. 16. — Endl. Gen. 



the chalaza, the ovule presents a slight thicken- 1076, Ord. 232,— DC. Frodr. i. 343, Ord. 19.— 



ing of the exostomc often capped by a small B. H. Gen. 133, Ord. 232. — Tremandraceee 



ohturator (as in the Euphorbiacece) . The ovules Lindl. Veg. Kin^d. 384, Ord. 132. 



may be nearly collateral, three in number. * It constitutes with Folygalacea, the class 



The seeds are covered with hairs in the Eastern FolyyaUmm of Endlichbe. 



species. * They are doubtless more apparent than real, 



^Labill. Fl. Nom.-BoU. i. 95, t. 122, 123. — the organisation of the gynseceum being quite 



Ebiohb. Ic. Exot. t. 78. — Eudg. in Trans. Linn. different, anddependingupontheanalogy of the 



Soc. viii. t. 11. — Endl. in Siteg. Enum. 7. — form and colour of the perianth. The androceum 



Hook. Icon. t. -268. — Hook. f. Fl. Tasm. t. 7. — of the Cheirantheras is also very different from 



Stjsetz in Fl. Freiss. i. 212. — Benth. M. that of the Tremandraceee. According to 



Amtra'l.i. 129.— Lindl. in Mitch. thr.Exp.n. Agardh [Theor. Si/st. 190), these are "more 



206 ; Sw. JRiv. App. 38 ; in Fot. Seg. (1844), t. perfect JSertyacece {Etiphorbiacea)." 

 67._Walp. Sep. i. 249 ; v. 68 ; Ann. ii. 87 ; 



