434 PROCEEDINGS OF THE AMERICAN ACADEMY. 
Pringle, the writer finds that the anther-bases in Mallinoa are cordate 
rather than sagittate, the basal auricles being decidely rounded. In 
Eupatorium bellidifolium furthermore the anther-bases are also retuse, 
the condition being very similar and the difference merely a trifling 
one of degree and in no sense one of kind. The degree of difference is 
closely comparable to that shown between fig. 2 and fig. 3 on plate 9 
of Bentham’s classical “Notes” (Jour. Linn. Soe. xiii.). It will be 
noticed that Bentham, whose experience and judgment upon these 
matters have probably never beén surpassed, admits the occurrence 
of anthers of both these types in the Eupatorium tribe (I. ec. 360). If 
admitted to the Eupatorium tribe at all, Mallinoa cannot be kept out 
of the genus Hupatorium as at present delimited. 
Regarding the transfer of Apodocephala Bak. to the Vernonieae, see 
Proc. Am. Acad. xlii. 32 (1906), and of Lepidesmia Klatt to the Heli- 
antheae, see Proc. Am. Acad. xlvii. 210 (1911). 
Further study, especially of the larger genera, may well reveal 
profitable generic segregations not as yet clear. This is especially 
likely to be the case among the numerous and as yet very imperfectly 
known South American members of the tribe. It is also by no means 
improbable that when these are more satisfactorily represented in 
herbaria some new and more convincingly natural re-adjustment of ~ 
generic lines will become possible. Furthermore, it is to be remem- 
bered by users of the following key that disconcerting exceptions and 
anomalies occur here as elsewhere among the Compositae, as for 
instance four-, six-, or even seven-angled achenes among the normally 
5-angled ones in the Ageratinae, or occasionally calvous achenes in 
certain heads of the normally pappus-bearing genera Trichogonia and 
Ageratum. 
Subtr. I. PIQUERINAE. _Antherae apice omnino expen a 
vel a connectivo sursum levi minusV 
lateraliter expanso tithats ‘eat ‘retuso terminatae. Achaenia non 
glandulari-papillifera. 
- hat si ese Ma rarissime brevissime obsoleteque setosus. . 1. iesccobte 
1. “Papp Pid S10 pen laeves vel modice scabratae 
hh setae eg toe 10 sursum lavellitan: roe Dies eit 
es vel non lobata. Capitula parva nu subsessl 
sim here RvRERy DER pay a's ween ec es 2. Deca oe 
€; e tenues non ravi aha Folia opposita dissecta, aad 
Hap s axillatia I non pedunculata...............+4. icons ane 
