OF ARTS AND SCIENCES. 39 



like funiculus ; the embiyo is invested by a very thin layer of albumen ; 

 its lower extremity bears a pair of very minute and thin cotyledons. 



2. Canthium and the Vanffueriece. 



Canthium, § Tarotea. Corolla Jiypocraterimorpha, tubo lobis du- 

 plo longiore : anthera3 subsessiles, mucronata?. 



To this section, designated by one of the aboriginal names of the 

 Tahitian species, as recorded by Forster, belongs GMococca barhata of 

 Forster, which Mr. Bentham (in the Niger Flora) has already referred 

 to Canthium, and the following closely related species : — 



Canthiubi sessilifolium ( Gray in Expl. Exped. ined.) : inerme, 

 glabrum ; foliis oblongo-ovatis seu ovato-lanceolatis basi rotundata fere 

 sessilibus chartaceis supra lucidis ; pedicellis solitariis binis ternisve in 

 axillis flore gracili (semipollicari) dimidio brevioribus ; pedunculo com- 

 muni vix uUo ; limbo calycis 5-dentato ; pyrenis seminibusque fere 

 rectis angustis. — Vanua-levu, Feejee Islands. 



To the character of Bentham's subtribe Vangueriece, it will be 

 necessary to add, that the seeds have a copious albumen and well- 

 developed cotyledons. In Canthium, the ovules are only pendidous, 

 and sometimes semi-anatropous, or nearly so. Morinda was referred 

 to th^s group by Mr. Bentham, through some oversight. 



3. Ixorece. 



These are well characterized by the convolute aestivation of the co- 

 rolla and the peltate or centrally affixed ovules. Miquel incorrectly 

 characterizes the group (his tribe Pavettece) as having the lobes of the 

 corolla imbricated in aestivation, whereas they are most obviously con- 

 volute, as Mr. Bentham distinctly stated in his note, explaining that he 

 used the word imbricated in a general sense for all overlapping forms. 

 The more definite term (convolute) would have obviated misappre- 

 hension, and would be strictly correct, so far as is known. 



To unite Ixora and Pavetta, as Richard, Blume, and Miquel have 

 done, seems not unnatural. But the former name ought in that case 

 to be retained, not only because it had been preferred by Lamarck, but 

 because, as a Linncean genus, it is ten years older than Pavetta, ap- 

 pearing as it does in the first edition of the Genera Plantarum. 



The collection which forms the basis of these remarks comprises one 

 genuine South American Ixora, and three undescribed Oceanic species, 

 which, along with I. fragrans {Cephaelis fragrans, Hook. & Arn. Bot. 



