2423 COMPOSITZ. 
rami truncati. Achenia costata, furfuraceo-hirsuta; pappi ariste copiosz, scabrida, rigi- 
diusculee. 
Souto Mexico, Guadalupe, valley of Mexico (Bilimek, 558), without locality (Mac- 
kenzie). Hb. Kew. | 
This species has much the aspect of S. sinuatus; but it is readily distinguished by its 
pinnatifid leaves, multistriate involucral bracts, and scurfy achenes. : 
44. Senecio heterogamus, Hemsley. 
Cacalia heterogama, Benth. in Vidensk. Meddel. 1852, p. 107. 
Costa Rica, Volcan de Irazu (@rsted, 192). Hb. Kew. 
_ 45. Senecio insignis, Hemsley. 
Psacalium thyrsoideum, DC. Prody. vi. p. 335. 
Mexico (Henke). 
46. Senecio jatrophoides, Hemsley. 
Cacalia jatrophoides, H. B. K. Nov. Gen. et Sp. iv. p. 169; DC. Prodr. vi. p. 828. 
SoutH Mexico, near lake Cuiseo &c., at 5400 feet (Humboldt & Bonpland). 
47. Senecio jurgensenti, Hemsley, n. sp. 
Herbaceus?, furfuraceo-puberulus, ramis graciliusculis, foliis longe petiolatis suborbicularibus 
breviter 7-lobatis, capitulis radiatis 12-15-floris numerosis corymbosis, involucri bracteis szepius 
8 marginibus late scariosis, ligulis latis 4-nerviis longe angustissime tubulosis, acheniis elon- 
gatis costatis glabris. . 
Herba?, plus minusve furfuraceo-puberula, ferruginea, ramis pedunculisque graciliusculis. Folia 
longe petiolata, membranacea, suborbicularia, leviter 7-lobata, usque 384 poll. diametro, 
scabrida, basi truncata leviter cuneata vel leviter cordata, lobis rotundatis vel subacutis, 
remote calloso-denticulatis ; petiolus graciliusculis, usque ad 5 poll. longus. Capitula radiata, 
7-9 lineas diametro, 12-15-flora, laxiuscule corymbosa; corymbi in paniculas terminales 
elongatas dispositi ; involucri bracteze sepius 8, coriaceo-scariosz (marginibus late scariosis), 
ovato-oblonge, vix acutz, dorso furfuracee ; receptaculum convexum, alveolatum ; flores radii 
sepius 5; ligule late, apice subintegre, conspicue 4-nervie, longe graciliterque tubulose; 
disci corolle infundibuliformes, lobis anguste ovato-lanceolatis, vix acutis ; antherz ecaudate ; 
styli rami truncati. Achenia elongata, costata, glabra; pappi ariste mollissime, fere sericex. 
Mexico (Jurgensen, 309). Hb. Kew. 
48. Senecio kermesinus, Hemsley. 
Gynoxys henkei, DC. Prodr. vi. p. 326. 
Sovuta Mexico, Cordillera of Oaxaca, at 3000 feet (Galeotti, 2151). Hb. Kew. 
49. Senecio lobatus, Pers.; Torr. & Gr. Fl. N. Amer. ii. p. 437. 
Nort Carouina and Missouri to FLoripa and Trexas.—Norta Mexico, Chihuahua 
(Wright). Hb. Kew. 
50. Senecio longilobus, Benth. Pl. Hartw. p. 18. 
Texas; New Mexico.—Norty Mexico, region of San Luis Potosi, 6000 to 8000 feet 
(Parry & Palmer, 534), Chihuahua and Sonora (ex A. Gray), Zacatecas (Coulter, 409) ; 
SoutH Mexico, Aguas Calientes (Hartweg, 127). Hb. Hew. 
