Composit<B.'\ 
MEXICO. 
299 
1, T. Mexicams. (Tab. LX III.) 
This genus, we believe, will be found to be quite distinct from any yet described. We have derived the 
generic name from the large wart or fleshy excrescence at the base of the outside of the achenium. 
Tab. LXIII. Fig. 1. Capitulum ; Jig. 2. Floret from the disk ; Jig. 3. Floret of the ray, with the 
accompanying leaflet of the involucre, showing a front view ; the fruit nearly ripe ; Jig. 4. Back view of the 
fruit, with its curious caruncle at the base. 
1. Melampodium sericeum? Lagasca. — De Cand. Prod. 5. p. 518. 
2. M. -(Zarabellia, DC.) tenellum; caule herbaceo erecto trichotomo piloso, foliis 
oblongo- V. lineari-lanceolatis bine inde parcedentatis utrinque attenuatis supra strigil- 
losis, pedicellis folio longioribus, involucri squamis 4-5 rotundatis obovatis, acheeniis 
curvato-obpyramidalibus apice truncatis lineis longitudinalibus transversalibusque rugosis 
reticulatitn notatis, lateribus dorsoque compressis. — M. oblongifolio proximum. 
3. M. perfoliatum. H. B. et Kunth. — De Cand. Prod. 5. p. 21. — Alcina perfoliata. 
Cav. Ic. \.p. 10. i{. 15. — Wedelia. Willd. — Polymnia. Poir. 
1. Parthenium Hysterophorus. L. — De Cand. Prod. 5. p. 532. 
1. Zinnia maritima ? H. B. et Kunth, Nov. Gen. Am. 4. p. 251. De Cand. Prod. 5. p. 
536. — Hab, Talisco. 
1. Jaegeria pedunculata ; hirsuto-hispida, caule subsimpllci, foliis lanceolatis inciso- 
dentatis apice dentibusque callosis, pedunculo elongate gracili monocephalo. 
Hab. Talisco. — Habit of J. mnioides ; but a span long, hairy, almost hispid, with lanceolate leaves, and a 
very elongated and slender flower-stalk. 
2. J. hirta ? Less. — De Cand. Prod. 5. p. 442. — Hab. Talisco. 
1. Tithonia pachycephala. De Cand. Prod. 5. p. 585. 
1 . Bidens leucantha. Willd. — De Cand. Prod. 5. p. 598. 
]. Coreopsis hipinnatus. Cav. Ic. 1. p. 9. t. 14. De Cand. Prod. 5. p. 604. 
1. Verbesina pinnatifida. Cav. Ic. \.p. 67. t. 100. De Cand. Prod. 5. p. 615. 
^ 2. V. ceanothifolia ? Willd. — De Cand. Prod. b. p. 613. 
1. Spilanthes alba. Willd. — UHerit. Stirp. p. 7. t. 4. De Cand. Prod. 5. p. 625. 
1. Clomenocoma aurantia. Cass. — De Cand. Prod. b.p. 641. 
A single capitulum alone, without foliage, is in the collection, from Acapulco. 
1. Schkuhria wg'ato. De Cand. Prod. b.p. 654. 
1. Tagetes (§ Leptocephalas) congesta ; caule erecto pusillo ramosissimo, ramis per- 
brevibus, foliis confertis oppositis pinnatisectis, segmentis linearibus mucronatis, capitulis 
corymboso-fasciculatis breviter pediceliatis cylindraceo-oblongis, flosculis 10-12, ligulis 
solitariis involucre longioribus, pappo aristis 2-4, paleis 2-3 truncatis v. obtusis. 
