ROBINSON.— GENERA OF THE EUPATORIEAE. 433 
ovate-oblong form, fairly characteristic of other portions of the Kupa- 
torium tribe, and these genera may well be transferred to the Agera- 
tinae as has been earlier pointed out. See Proc. Am. Acad. xlii. 27 
(1906). With these changes it is believed that the Piquerinae, 
Adenostemmatinae, and Ageratinae will be found fairly clear as sub- 
tribes. The fourth subtribe of the Lupatorieae, characterized by its 
more numerously ribbed achenes, has been known as the Adeno- 
stylinae from its (as assumed) typical genus, Adenostyles Cass. This 
genus, however, is one which has always been very dubiously placed 
with the Lupatoricac if classed with them at all. To the writer, after 
repeated examinations of the genus from various points of view, it 
seems clear that its real affinity is with the Senecioneae. Arguments 
for this view can be found in many minor details of habit, which taken 
together become convincing. The elongated style-branches alone 
would suggest a relationship with the Eupatorieae, but even these do 
not appear really eupatorioid. They tend to an attenuate rather 
than a clavellate form in the first place, and in the second they are 
inclined to be recoiled through a much greater arc than is usual among 
the Eupatorieae. Finally the unbranched portion of the style in 
Adenostyles is at maturity commonly exserted, while this would in the 
_ Eupatorium tribe be highly exceptional. With the removal from the 
Eupatorium tribe of the genus Adenostyles the remaining portion of 
the subtribe hitherto known as the Adenostylinae must in accordance 
with Art. 52 of the International Rules of Botanical Nomenclature 
be renamed. It may be called the Kuhniinae. 
The genus Mallinoa Coult. Bot. Gaz. xx. 47 (1895) was doubt- 
fully ascribed by its author to the Inuleae, its anthers being de- 
scribed as sagittate and being figured (I. ec. t. 5, f. 4) as having acute 
auricles at the base of the anther-cells. Soon after its publication 
Hoffmann in Engl. & Prantl, Nat. Pflanzenf. Nachtr. 322 (1897) 
Placed Mallinoa in the Eupatorieae, where there can be no doubt it in 
reality belongs. For some reason not made clear, Hoffmann, though 
recognizing the eupatorioid nature of Mallinoa placed it next Tricho- 
gonia, with which it has no close habital resemblance nor striking 
likeness of involucre or pappus. To the writer Mallinoa seems to be 
merely a species of the genus Eupatorium, exceedingly close to the 
long known E. bellidifolium Benth. In foliage, gesture, and inflores- 
i these plants possess a resemblance amounting almost to iden- 
3 Mallinoa, however, is readily distinguished (specifically) by 
its decidedly broader, blunter, and much smoother involucral bracts. 
Tn the light of excellent material of both plants secured by Mr, 
