31 1 >CEEDING8 OF Till: AMERICAN ACADEMY. 



phila n elj resembles petropkila, Gray, bat from this B] 



i> readily distinguished by the inflorescence, and by the much la 

 heads. In the nature ol the inflorescence C rhyacophila is perhaps 

 more nearly allied to C. anthemoides, DC, but from this species again 

 our plant differs markedly in the coarser character of the leaves, and by 

 tin- erect ligneous Btem. 



Spilanthes filipes. Herbaceous: erect, freely branching from 



the base, 8 to A dm. high, rather sparsely pubescent with jointed hairs: 

 leaves opposite, petiolate, 3-nerved from near the base, ovate to oblong- 

 lanceolate, including the petiole 2.5 to 6 cm. long, 0.8 to 2 cm. broad, 

 obtusish, Bubmucronate, i -dentate, narrowed rather abruptly or 



even attenuate al the base into a le, glabrous or with a few 



■ I hairs on the upper Burface and on the midrib and lateral nei 

 beneath: heads radiate, A to 5 nun. high, nearly or quite as broad, borne 

 on long Blender (5 to 1<> cm. long) peduncles which either terminate the 

 Btems and branches or spring from the upper axils; involucral sea 

 oblong-ovate, 2 to 2.5 mm. long, slightly acuminate, acute, inconspicu- 

 ously ciliate ; ligules about .">, including the tubular portion 1 mm. in 

 length; achenes of ray-flowers triangular: flowers of the disk 2.5 mm. 

 long nes laterally compressed bearing two minute pappus-awns, 



ciliated, glabrous or nearly so on each face, at maturity about 1 mm. in 

 length; pales rounded or subtruncate at the apex. — Collected by Dr. 

 G. F. Gaumer in Yucatan, L896, no. 1122. In general appeara 

 S.jUipes most resembles S. ramosa, Hemsl., but it differs materially by 

 having much larger li aves, smaller head-, and stricter habit. 



Dysodia Seleri, Robinson & Greenman, n. sp. Stoutish herb: 

 branches terete, striate, puberulent, at length glabrate, glandless: L< 

 simple, opposite or sub-opposite, oblong, shortly acuminate, rounded or 

 more often cordate at the sessile base, sharply and rather finely serrate, 

 6 to 13 cm. long, '-'.1 to I cm. broad, dotted with numerous round pellu- 

 cid glands; the uppermost leaves reduced, elliptical, often alternate: 

 peduncl linal, more or less clavate-thickened toward the summit: 



heads radiate, large, •'! cm. in diameter exclusive of the ligules: involu 

 puberulent, glandless; outer scales free, about 2-seriate, unequal, lam 



. acute, herbaceous at least near the apex : inner BCales united for 

 two-thirds their length, their tips attenuate: ray- 1 _' to 20, brown ill a 

 dried siate, broadly elliptical, about 2 em. long including the tapering 

 tubular base; pale- Bhort, thickish, fimbriate: tubular flowers 2 cm. I 

 including the Bericeous-villous achenes: pappus 2-seriate, of about 20 

 Bubequal setose-fimbriate scales, 1 cm. in length: Btyle-branchea passing 



