436 MEXICO.-SUPPLEMENT.' [Composite*. 



Hab. Between San Bias and Tepic. — Better specimens in Dr Sinclair's collection, than we before pos- 

 sessed, have satisfied us that we were wrong in referring this to De Candolle's Tithonia pachycephala. It 

 is quite a different and a frutescent species. 



2. T. tagetiflora. Desf. in Ann. Mus. 1. p. 46. t. 4. De Cand. Prodr. 5. p. 584. 



Hab. Acapulco and Realejo. 



1. Bidens bipinnata. L. — De Cand. Prodr. 5. p. 603. 



Hab. Between San Bias and Tepic. 



1. Lipochaeta umbellata. De Cand. Prodr. 5. p. 610. 

 Hab. Between San Bias and Tepic. 



2. L. macrocephala (n. sp.); foliis rigidis subsessilibus ellipticis acutissimis serratis 

 asperis trinerviis supra pilis brevibus basi bulbosis subtus elevatim reticulatis, pedunculis 

 axillaribus terminalibusque solitariis monocephalis, involucri squamis magnis laxis ext. 

 ovato-subrotundis interioribus ellipticis apice scariosis infra apicem constrictis, acheniis 

 centralibus aristis 2 elongatis. 



Hab. Between San Bias and Tepic. — A solitary specimen of this is in the collection. Leaves 3-4 inches 

 long, harsh and rigid, with very short inconspicuous hairs. Capitula 5 or 6 times as large as in L. umbellata. 

 Our Verbesina ? ceanothifolia, supra, p. 299, is undoubtedly a congener with this. 



1. Tagetes multiseta ; caule erecto alterne ramoso, foliis alternis bipinnatisectis lobis 

 lineari-subulatis fere omnibus in setam elongatam productis, pedunculis solitariis longis 

 nudis monocephalis, invol. oblongo 5-dentato, flosculis 15-20, ligulis 5 parvis retusis 

 obcordatisve. De Cand. Prodr. 5. p. 645. 



Hab. Between San Bias and Tepic. 



1. Porophyllum viridiflorum. De Cand. Prodr. 5. p. 648. Kleinia viridiflora. 

 H.B.K. 



Hab. Between San Bias and Tepic, 



1. Cacalia sessilifolia (n. sp. Sect. Eucacalia) ; glabra, caule herbaceo subsimplici ? 

 foliis profunde cordatis angulato-dentatis marginatis reticulatis omnino sessilibus, corymbo 

 laxo oligocephalo, pedicellis nudiusculis, capitulis multifloris, involucri campanulati 

 squamis 10-12 ext. herbaceis int. marginibus scariosis. 



Hab. Between San Bias and Tepic— A fine handsome species, allied to C. cordifolia, but quite distinct 

 in its entirely sessile leaves. 



2. C. cirsiifolia (n. sp. Sect. Eucacalia) ; erecta, glabra, caule herbaceo superne suba- 

 phyllo, foliis inferioribus lanceolatis pinnatifidis laciniis patentibus lineari-oblongis acutis 

 l-dentatis in petiolum longum basi insigniter dilatatum attenuatis superioribus fere ad 



