110 COMPOSITA. 
2. Xanthocephalum benthamianum, Hemsley, n. sp. 
Erectum, puberulum, foliis angustis pinnatifidis vel dentatis, capitulis multifloris corymbosis, invo- 
lucri bracteis subzequalibus herbaceis numerosis 2—3-seriatis glanduloso-puberulis, receptaculo 
convexo alveolato fimbrillifero, corollis parcissime puberulis, acheniis ecostatis glabris, pappo 
brevissimo annuliformi. 
Herba facie Senecionis eruceformis, sed minus robusta, plus minusve glanduloso-puberula, caulibus 
in exemplariis imperfectis nostris subsimplicibus, fere sesquipedalibus, totis foliosis. Folia (cau- 
lina tantum visa) alterna, sessilia, hispidula, adscendentia, lanceolata, pinnatifida vel remote 
dentata, 1-3-pollicaria. Capitula multiflora, 1-14 poll. diametro, corymbosa; involucri 
bracteze numerosx, 2—3-seriate, herbacee, margine membranaceze, subzequales, lanceolate, 
acutz, glanduloso-puberule ; receptaculum convexum, alveolatum, fimbrilliferum ; flores radii* 
30 et ultra, disci numerosissimi, omnes parcissime puberuli; corolle ligulate, gracilitér tubu- 
lose, obtusz vel: dentatz ; corolle tubulose graciles. -Achenia levia, glabra, nitida, oblique 
ovata, a latere compressa; .pappus subnullus, brevissimus, annuliformis.—X. bonplandianum, 
Benth. Pl. Hartw. p. 16, non DC. 
Nortu Mexico, region of San Luis Potosi, 6000 to 8000 feet (Parry & Palmer, 526) ; 
Souta Mexico, Aguas Calientes (Hartweg). Hb. Kew. 
This differs from X. centauroides in its more robust habit, corymbose flower-heads, 
involucre, pappus, &c. 
3. Xanthocephalum centauroides, Willd. in Ges. nat. Fr. Berl. Mag. 1807, 
p. 140. 
Xanthocephalum bonplandianum, DC. Prody. vi. p. 44. 
Pyrethrum bonplandianum, H. B. K. Nov. Gen. et Sp. iv. p. 300. 
Grindelia? coronopifolia, Lehm. Ind. Sem. Hort. Hamb. 1828, p. 16, et in Linnea, v. p.376; DC. 
Prodr. v. p. 316. 
South Mexico, near Valladolid (Humboldt & Bonpland), wet meadows near Mexico 
(Bourgeau, 369), valley of Mexico (Schaffner, 207, 278), without locality (Aschendorn). 
Hb. Kew. 
4, Xanthocephalum conoideum, Hemsley, n. sp. 
Glabrum vel cito glabrescens, ramulis ultimis floriferis gracilibus, foliis linearibus, capitulis multi- 
floris subcorymbosis, involucri bracteis ineequalibus albo-coriaceis apice incrassatis numerosis 
2-3-seriatis, receptaculo conoideo vel elongato, acheniis costatis tomentosis, pappo brevi annu- 
lato subcarnoso. . 
Herba (?) glabra vel cito glabrescens, ramulis ultimis floriferis gracilibus, angulatis. Folia ramu- 
lorum floriferorum alterna, sessilia, incrassata, enervia, linearia, usque pollicaria, integerrima, 
obtusa. Capitula multiflora, 6-9 lineas diametro, subcorymbosa; involucri bractez numerose, 
2-3-seriate, inzequales, exteriores minores, albo-coriacez, apice incrassate, glabra; recepta- 
culum longe conoideum vel elongatum, alveolatum, fimbrilliferum ; flores radii 15-20, disci 
numerosissimi, omnes glabri; corolle ligulate breviter tubulosz, apice obtuse (an semper ?) ; 
corollz tubulosz breves. Achenia 7-costata, tomentosa, oblonga; pappus brevis, annulatus, 
subcarnosus. 
_ Sour Mexico, Real del Monte to Zacatecas (Coulter, 299). Hb. Kew. 
The stature and habit of this species we are unable to describe ; but it is very different 
