COMPOSITZ. . 241 
longa,3—4 ata, densiuscule thyrsoideo-paniculata; involucri bractezs numerose, glabre, oblonge, 
acutiuscule, floribus breviores, dorso incrassate, marginibus scarioso-membranaceis ; recepta- 
culum convexum, foveolatum, fimbrilliferum ; corolle breviter 5-lobe, lobis ovato-oblongis, 
obtusis, incrassatis, extus papillosis; anthere ecaudate; styli rami truncati. Achenia 
(matura non visa) brevia, crassa, costata, glabra. 
GuaTEmaLa, near Santa Maria, Volcan de Agua (Salvin & Godman, 327). Hb. Kew. 
89. Senecio grayanus, Hemsley. 
Cacalia decomposita, A. Gr. Pl. Wright. ii. p. 99. 
Nort Mexico, Santa Cruz, Sonora (Wright). Hb. Kew. 
40. Senecio hartwegii, Benth. Pl. Hartw. p. 18. 
Senecio seemannii, Schz. Bip. in Seem. Bot. Voy. ‘ Herald,’ p. 311. 
Nortu Mexico, Sierra Madre (Seemann, 2010), without locality (Gregg, 622); Sourn 
Mexico, Bolafios (Hartweg, 124). Hb. Kew. 
41. Senecio hederzfolius, Hemsley, n. sp. 
Scandens ?, foliis longe petiolatis subrotundatis 5-lobatis densissime pellucido-punctatis, capitulis 
discoideis ad 20-floris paucis laxe corymbosis, involucri bracteis sepius 8, acheniis glabris 
costatis. 
Frutex scandens? vel herba, vamis flexilibus, primum puberulis, deinde glaberrimis, nitidis, strami- 
neis. Folia longe petiolata, crassiuscula, circumscriptione suborbicularia, breviter 5-lobata, 
parcissime ramentacea, densissime pellucido-punctata, pauci- calloso-dentata, lamina 3-4 poll. 
diametro, lobis divaricatis, calloso-mucronatis ; petiolus graciliusculus, usque ad 4 poll. longus. 
Capitula discoidea, ad 20-flora, pauca, laxe corymboso-paniculata ; paniculz terminales ; invo- 
lucri bractez seepius 8, herbaceo-scariose, lanceolato-oblonge, obtuse, puberule, floribus paullo 
breviores ; receptaculum leviter convexum, foveolatum ; corollz anguste infundibuliformes, 
breviter 5-lobate, lobis ovatis, vix acutis, apice papillosis; anther ecaudate; styli rami 
hirsuti, truncati. Achenia immatura glabra; pappi ariste scabride, corollam fere xquantes. 
Mexico (Jurgensen, 379). Hb. Kew. 
42, Senecio helodes, Benth. Pl. Hartw. p. 42. 
Cacalia racemosa, Sch. Bip. MSS.? 
South Mexico, Anganguio (Hartweg, 319), Peak of Orizaba, 11,500 feet ( Galeotti, 
2183), at the foot of the Jacal (Ehrenberg). Hb. Kew. 
43. Senecio heracleifolius, Hemsley, n. sp. 
Herbaceus, robustus, glabrescens, foliis caulinis amplis pinnatifidis venis minute reticulatis, capitulis 
radiatis corymbosis, corymbis compositis polycephalis, involucri bracteis sepius 8 multistriatis, 
acheniis costatis hirsutis. 
Herba perennis ?, erecta, robusta, cito glabrescens, caulibus apice tantum ramosis. Folia caulina 
petiolata, alte pinnatifida, 4-8 poll. longa, 3-5 poll. lata, subtus puberula, minute reticulata, 
lobis utrinque szpius 3-4, oblongis, remote minute calloso-denticulatis. Capitula radiata, vix 
1 poll. diametro, 15-20-flora, numerosissima, in corymbos compositos amplos terminales dis- 
posita; involucri bractez szpius 8, glaberrime (in siccis straminez) , herbaceo-scariose, ovato- 
oblong, longitudinaliter multistriate, apice obtusissime, fimbrillifere ; receptaculum alte 
foveolatum ; flores radii sepissime 5; ligule late, longiuscule tubulose ; disci corolle glabree, 
altiuscule 5-lobatz, lobis angustis, medio nervo valido percursis; anthere ecaudate ; styli 
BIOL. CENTR.-AMER., Bot. Vol. II., December 1881. 24 
