ROBINSON. — -JAEGERIA AND RUSSELIA. 317 



■*- Heads relatively large, including the well-exserted conspicuous yellow rays, 1.2 



to 1.5 cm. broad. 

 ++ Main stem prostrate, rooting at the nodes ; branches ascending, few-headed : 



bracts foliar. 



3. J. macrocephala, Less. Syn. Gen. Comp. 223, & Linnaea, ix. 

 270. — Jalapa, Mexico, Schistic & Deppe, C. L. Smith, nos. 1624, 1835; 

 brook-sides near Patzcuaro, Michoacan, Pringle, no. 4166. 



-w- *■*■ Main stem erect from a short decumbent base : heads many : bracts reduced. 



4. J. pkdunculata, Hook. & Am. Bot. Beech. 290. — Jalisco, 

 Bceckey, Palmer, no. 427, ace. to Gray, Proc. Am. Acad. xxii. 124 ; Prin- 

 gle, no. 1772; also Palmer, no. 47 in part (Spilanthes sessilis, Gray, I.e. 

 428, not Hemsl.). The identity of Mr. Pringle's no. 1772 with the type 

 specimen at Kew has been kindly verified by Mr. W. B. Hemsley. 



+- -t- Heads considerably smaller; rays inconspicuous, scarcely exserted, yellow or 

 white: pubescent or hirsute annuals. 



++ Dwarf but not creeping, very slender; pubescence scanty: leaves small, ovate, 



not at all clasping at the base. 



5. J. mnioides, IIIiK. Nov. Gen. & Spec. iv. 278, t. 400. The only 

 plant in herb. Gray corresponding at all satisfactorily to the plate and 

 description of this Michoacan species is some rather poor material col- 

 lected in Costa Rica by Oersted. In it the stems are very slender, simple 

 or sub-simple, ami erect, while the leaves are small and truly ovate, sub- 

 sessile, but in no sense clasping. Kunth describes the rays as yellow. 

 It is not unlikely that this original species of the genus was only a 

 starved condition of the common J. hirta, Less. 



■*-<■ ++ Tall, inclining to be repent at the base: leaves ovate, acutish : peduncles 

 filiform, several times as long as the heads: pubescence usually copious and 

 spreading. 



6. J. hirta, Less. Syn. Gen. Comp. 223. J. repens, DC- Prodr. v. 

 544. Acmella hirta, Lag. Nov. Gen. & Spec. 31 ; Less. Linnaea, v. 15.'!. 

 Melampodium brachyglossum, J. D. Smith, Bot. Gaz. xiii. 74. Spilan- 

 tltes sessili folia, Coulter in J. Donnell Smith, Enum. PL Guat. i. 23, iii. 

 43. Jaeyeria caloa, Wats., a binomial needlessly published by Rusby, 

 Mem. Torr. Club, iii. no. 3, 62.* 



* Dr. Watson was quite right in regarding this plant as the characteristic cat- 

 vous part of Schultz's mixed type of the unpublished (ralinsor/a calva, as the exam- 

 ination of Mandon's no. 80 (a portion of which has been kindly forwarded from 

 the Kew Herbarium fur comparison) clearly shows. Dr. Rusby's publication of 

 another Galinsoga caloa, founded on a pappus-bearing plant (which in the well 

 known onfusion of the Mandon numbers may or may not have bad any relation to 



