2t)<)7 



* COSMUS teimilolius. 

 Fine-leaved Cosmus. 



SYNGENESIA SUPERFLUA. 



Xat. uid. AsTERACE.*:, § Senecionide,e. 



COSMUS, Can. Capitulum multiflormn, raJiatum, ligulis neutris. 

 bii'olucnim duplex, utruiuque squaiiiLs 8-10 basi plus minus concretis apice 

 acuuiiuatis. Receptnculum planum paleaceum, palcis membranaceis in filuni 

 elongatum proiluctis. Styli rami apice incrassati, hispidi, in conum subulatum 

 producti. Anthercs apice appendiee scariosa cordata superata;. Achaiuinii 

 tetragouum, exalatuui, rostratum, et interdum stipitatum, aristls 2-4 retrorsum 



piloso-scabris deciduis coronatum. Herb* American£E annuce, glabra:, aut 



vix pilosuLe, elates, romosce. Folia bipinnatisecta, lobis linearibus, lanceo- 

 latis, scepiics margine integerrimis. Capitula ad apices ramorum longe nu- 

 dorum soHtaria. Discus intense luteus. Radius versicolor. DC. prodv. 

 5. 607. 



C. tenuij'oiias ; glaberrimus, foliis bipinnatisectis, lobis linearibus remotis acu- 

 tissimis integris lobatisque, involucri exterioris squamis ovatis acuminatis, 

 achaeniis asperis rostratis muticis vel 1-triaristatis. 



Herba Cosmi bipinnati sed magis laciniata et tenuior. Liguls cuneatct, 

 eroscB, rosece, sublks pallidtp, unciam lungte. Flosculi disci Ititei, antlieris 

 atris. Corolla bis strangulata, parte inferiore tereli, intermedia injiald, 

 supremd urcrolatd. Achtenia teretia, nspera, nunc rnstrata mutica, nunc 

 suberostria ; aristis 1-3, quartan unica retrorsum serrata,curonata. 



A beautiful annual Mexican plant, not unfreqnently 

 raised from imported seeds, but always flowering so late in 

 tlie year that it is unable to ripen seed and perishes. It 

 grows from a foot and a half to two feet high, and is a most 

 striking- object when its rich purple flowers are well con- 

 trasted with the bright fennel-like leaves. 



It differs from C. bipinnatus in the leaves being still more 

 finely cut, the outer leaflets of the involucrum less acuminate, 



* From Koa^oQ heautifuh in allusion to tlic appearance of the species. 

 VOL. XXIII. N 



