ROBINSON AND GREENMAN. — GENUS VERBESINA. 537 



& Spec. iv. 200. Sauhinetia, Remy in Gay, Fl. Chil. iv. 282. Ximene- 

 sia, Cav. Ic. ii. 60, t. 178. For more complete generic synonymy see 

 Hook. f. & Jacks. Ind. Kew. under Verhesiiia and Actinomeris. 



§ 1. Hamulium, DC. 1. c. 617. Awns of the pappus hooked at the 

 summit. Heads subsolitary, radiate ; ligules short, yellow, more or less 

 biseriate. — Hamidium, Cass. 1. c. & Diet. xx. 260. Ancistrophora, 

 Gray, 1. c. — Two species, chiefly West Indian. 



* Acaulescent. 



1. V. Wrightii, Griseb. Dwarf herb with radical spatulate leaves 

 and naked scapose peduncles. — Cat. PI. Cub. 155 (1866). V. ancis- 

 trophora, Gray, Proc. Am. Acad. xix. 14 (1883). Hamulium Wrightii, 

 Sch. Bip. Bonplandia, ix. 365 (1861). — Cuba, Wright, no. 1317. 



* * Caulescent : leaves alternate, decurrent. 



2. V. ALATA, L. Spec. ii. 901. Hamulium alatinn, Cass. I.e. 261. 

 — Common and generally distributed in the West Indies. Said also to 

 grow in Dutch Guiana and in Mexico, but not obtained in the latter 

 country by recent collectors. 



§ 2. Platypteris, DC. 1. c. 617, in part (as to § 1). Heads discoid, 

 large, subglobose. — Platypteris, HBK. Nov. Gen. & Spec. iv. 200. — 

 Three species of S. Mexico and Central America with opposite leaves 

 and winged stems. 



* Bracts of the involucre of subequal length, the outer obovate or oblanceolate. 



3. V. Fraseri, Hemsl. Biol. Cent.-Am. Bot. ii. 187. — Guatemala, 

 Duenas, Fraser, Savin, & Godman, ace. to Hemsl. ; Depart. Santa Rosa, 

 Heyde & Lux, no. 4236 of Mr. J. Donnell Smith's sets. 



Var.* Nelsoni, J. Donnell Smith, Bot. Gaz. xxiii. 9. — Near Neuton, 

 Depart. Huehuetenango, Guatemala, Nelson, no. 3551. Said to have 

 leaves lobed and heads smaller than in the typical form. 



* * Involucral bracts narrow, oblong to linear, the outer much shorter, 

 ■t- Leaves ovate, serrulate. 



4. V. ovATiFOLiA, Gray in Hemsl. 1. c. 189, & Proc. Am. Acad, 

 xix. 15. — Chiapas, Mexico, Ghieshreght, no. 523. 



f- t- Leaves dentate or sinuately lobed. 



5. V. crocata, Less. Syn. Comp. 232; DC. Prod r. v. 617; Hemsl. 

 1. c. 187. V. Fraseri, Klatt, Bull. Soc. Bot. Belg. xxxi. 205, not 

 Hemsl. Bidens crocata, Cav. Ic. i. 66, t. 99. Spilanthes crocata, 



