218 COMPOSITAE. 
16. Porophyllum, sp. 
- Sourn Mexico, Sierra San Pedro Nolasco, &c. (Jurgensen, 678). Hb. Kew. 
17. Porophyllum, sp. 
Nortu Mexico, region of San Luis Potosi, 6000 to 8000 feet (Parry & Palmer, 502), 
Zacatecas (Coulter, 448 ; Hariweg, 146), without locality (Mairet, Parkinson, Tate). 
Hb. Kew. 
18. Porophyllum, sp. 
Mexico, Mazatlan (Seemann, 1491; Coulter, 446), San Blas to Tepic (Sinclair). 
Hb. Kew. 
169. ADENOPHYLLUM. 
Adenophyllum, Pers. Syn. Pl. ti. p. 458; Benth. et Hook. Gen. Plant. ii. p. 408. 
Annual herbs, limited to the Mexican region. 
1. Adenophyllum coccineum, Pers. Syn. Pl. ii. p. 458; DC. Prodr. v. p. 638. 
Adenophyllum capillaceum, DC. Prodr. v. p. 638; Calques des Dess. Fl. Mex. 620. 
Willdenowa glandulosa, Cav. Ic. Pl. i. t. 89. 
Schlechtendalia glandulosa, Willd. Sp. Pl. iii. p. 2125. 
Sovurn Mexico, Cordillera of Oaxaca, in maize-fields at 4500 feet (Galeotti, 2042), 
near Doscaminos (NVée). Hb. Kew. 
2. Adenophyllum porophyllum, Hemsley. 
Pteronia porophyllum, Cav. Ic. Pl. iii. p. 18, t. 225. 
Dyssodia porophyllum, Willd. Enum. p. 900; DC. Prodr. v. p. 639. 
Bebera porophyllum, Less. Syn. p. 237. 
Lebetina cancellata, Cass. Dict. xxv. p. 394. 
NortH Mexico, Sonora (Schott), Chihuahua (Thurber), San Luis Potosi to Tampico 
(Palmer, 1118); Sours Mexico, Zimapan (Coulter, 442), Cuernavaca (Bourgeau, 1209) ; 
GuatTemaLa, San Gabriel (Bernoullz, 1093). Hb. Kew. 
3. Adenophyllum wrightii, A. Gr. Pl. Wright. ii. p. 92. 
Nort Mexico, Cobre (Wright). Hb. Kew. 
170. NICOLETTIA. 
Nicolettia, A. Gr. Pl. Wright. i. p. 119; Benth. et Hook. Gen. Plant. ii. p. 409. 
Dwarf herbs. The following and one Californian species. 
1. Nicolettia edwardsii, A. Gr. Pl. Wright. i. p. 119, t. 8. 
Norta Mexico, Guajuquilla, Chihuahua (Hdwards). 
171. DYSODIA. 
Dysodia, Cav. (Dyssodia) i in Ann. Cienc. Nat. vi. p. 334, ex DC. Prodr. v. p.639; Benth. et Hook. 
Gen. Plant. ii. p. 409. 
This genus comprises about ten herbaceous species, inhabiting California, Arizona, 
