OF ARTS AND SCIENCES. 311 



the other hand, the jestivation of the corolla and the bifid style per- 

 fectly distinguish this genus from Stylocoryne, as does the former char- 

 acter from FerneUa. As to Petesia, that genus is known to have 

 been founded upon species of Roiideletia, to which the wholly obscure 

 species added by Jacquin is thought to belong ; the P. spicata of 

 Swartz is probably Gonzalea spicata ; Gsertner's P. carnea, on which 

 De CandoUe founded his dubious genus Eumachia, is perhaps an Ixora ; 

 and finally the Philippine and Mexican species proposed by Bartling, 

 and adopted by De Candolle, are still obscure, and perhaps themselves 

 heterogeneous. There is small likelihood that any of them are con- 

 geners of the species here characterized. 



12. Rondeletiece. 



Lerchea caltcina ( Gray, I. c.) : foliis oblongo-lanceolatis acumi- 

 natis basi attenuatis, junioribus (prassertim costis venisque subtus cum 

 stipulis integerrimis ovato-lanceolatis caudato-acuminatis ramulis flori- 

 busque) ferrugineo-sericeis ; cymis condensatis ; lobis calycis lineari- 

 spathulatis foliaceis tubo coroUie pai-um brevioribus. — Ovolau, Feejee 

 Islands, in fruit only ; Viti-levu, Mr. Milne (in herb. Hook,), with 

 blossoms. 



This is evidently a near relative of Keinwardt's XatithopLytmn fndi- 

 culosum. Indeed, should Blume's character, stipulce geminata, magnoR, 

 hifidce, be incorrect, nothing of consequence would remain in the de- 

 scription to distinguish that plant from the present. But Mr. Bennett's 

 remark (in PI. Jav. Ear., p. 101) implies that the festivation of the 

 corolla in the original Xantliophytum is imbricative (or rather convo- 

 lutive), as in Wendkmdia. In the present plant it is certainly valvular. 

 So that, whether X. fniticulosiim is to fall into Lerchea or not, our 

 present plant must do so, although the enlarged and foliaceous calyx- 

 lobes seem to be peculiar. The stigma is that of Xanthophytum. The 

 cocci are at length ventrally dehiscent and similar to those of the sub- 

 genus Diplophragma of Hedyotis; from which the large epigynous disk 

 and the interpetiolar stipules mainly separate it. 



The species of Ophiorhiza are by no means well characterized. Of 

 the three here proposed, the first is the most peculiar ; the second and 

 the third are perhaps confluent. 



Ophiorhiza peploides {Gray, I. c.) : herbacea, puraila, diffuse 

 ramosa ; ramis puberulis foliosis ; foliis parvis saepe 3 - 5-natis vel 



