ROBINSON. — GENERA OF THE EUPATORIEAE. 433 



o^'ate-oblong form, fairly characteristic of other portions of the Eupa- 

 foriinu tribe, and these genera may well be transferred to the Agera- 

 iiuac as has been earlier pointed out. See Proc. Am. Acad. xlii. 27 

 (1906). With these changes it is believed that the Piquerinac, 

 Adrnostoiniiafliiar, und Jgrratinar will be found fairly clear as sub- 

 tribes. The fourth subtribe of the Phipaforlcar, characterized by its 

 more numerousl}^ ribbed achenes, has been known as the Adrno- 

 sti/Unae from its (as assumed) typical genus, Adcnostyles Cass. This 

 genus, however, is one which has alwa.ys been very dubiously placed 

 with the Eupaioricae if classed with them at all. To the writer, after 

 repeated examinations of the genus from various points of ^'iew, it 

 seems clear that its real affinity is with the Smecioncae. Arguments 

 for this view can be found in many minor details of habit, which taken 

 together become con\'incing. 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 l)e recoiled through a much greater arc than is usual among 

 the Eupatorieae. Finally the unbranched portion of the style in 

 Adcnostyles 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 AdenostyJes the remaining portion of 

 the subtribe hitherto known as the Adennstylinae must in accordance 

 with Art. 52 of the International Rules of Botanical Nomenclature 

 be renamed. It may be called the Kuhniinac. 



The genus MaUinoa Coult. Bot. Gaz. xx. 47 (1895) was doubt- 

 fully ascribed by its author to the Inulcac, its anthers lieing de- 

 scribed as sagittate and being figured (1. c. t. 5, f. 4) as having acute 

 auricles at the base of the anther-cells. Soon after its publication 

 Hofl'mann in Engl. & Prantl, Nat. Pflanzenf. Nachtr. 322 (1897) 

 placefl MaUinoa in the EujKitorieae, where there can be no doubt it in 

 reality belongs. For some reason not made clear, Hoffmann, though 

 recognizing the eupatorioid nature of MaUinoa placed it next Tricho- 

 gonia, with which it has no close habital resemblance nor striking 

 likeness of involucre or pappus. To the writer MaUinoa seems to be 

 merely a species of the genus Eupatorium, exceedingly close to the 

 long known E. beUidifolium Benth. In foliage, gesture, and inflores- 

 cence these plants possess a resemblance amounting almost to iden- 

 tity. MaUinoa, however, is readily distinguished (specifically) by 

 its decidedly broader, blunter, and much smoother involucral bracts. 

 In the light of excellent material of both plants secured by Mr. 



