Blake — A Revision of the Genus Viguiera 59 
B. & H. ex Hemsl. Biol. Centr.-Am. Bot. ii. 161 (1881); Rob. 
& Greenm. Proc. Bost. Soc. Nat. Hist. xxix. 100 (1899). — MEX-— 
ICO: Sierra Madre of northern Mexico, Seemann 2007 in part 
(TYPE coLL.: G.).— According to Bentham & Hooker (Gen. PI. 
ii. 364 (1873)) this number of Seemann’s includes also Viguiera 
angustifolia (H. & A.) Blake (Tithonia angustifolia H. & A.). 
& Subgenus II. Calanticaria (Rob. & Greenm.), comb. nov. 
~ Herbae perennes vel frutices rare annuae, capitulis saepe majus- 
culis, foliis variis, involucri 2—7-seriati phyllariis saepius basi indu- 
ratis apice herbaceis, appendice ampliata membranaceo-chartacea 
numquam praeditis, pappo ex aristis et squamellis liberis vel plus 
minusve connatis numquam membranaceo-scariosis composito 
interdum nullo. — Species typica Gymnolomia Greggii Gray (= V 
Greggiit (Gray) Blake). — A large and varied group, distinguished 
from Amphilepis by the fact that the inner phyllaries are never 
membranaceous-chartaceous and ampliated at apex, from Yer- 
balesia by the fact that the squamellae when united are stiff and 
scarious, not forming a membranaceous many-nerved scale. 
Species 13-136. For synopsis of sections, see p 
It has seemed necessary to adopt for this, the. ‘eraeal and largest 
subgenus of Viguiera, the first subgeneric name used for any species 
now included in it. This is Gymnolomia subg. Calanticaria Rob. & 
Greenm., Proc. Bost. Soc. Nat. Hist. xxix. 89 (1899), which in- 
cluded G. Greggii Gray, G@. cinerascens (Sch. Bip.) B. & H., G. pin- 
natilobata (Sch. Bip.) B. &. H., G. tripartita Rob. & Greenm. and 
G. tenuifolia (Gray) B. & H., of which G. Greggii is here selected 
as the type. The subgeneric diagnosis there given applies of course 
to only a very few of the species now included in Calanticaria. 
The name Euviguiera, which would have been the preferable desig- 
nation for the group, had long before been used by Gardner (Lond. 
Journ. Bot. vii. 397 (1848)), but only as the name of a section 
(which included two species of Viguiera, two of Oyedaea, and three 
of Aspilia), and is accordingly not available 1 in the present con- 
nection. 

Section 1. Hypargyrea, sect. nov. Herbae perennes robustae, 
foliis lanceolatis vel ovato-lanceolatis integris sessilibus infra seri- 
ceis vel tomentosis, capitulis majusculis vel magnis solitariis vel 
paucis, involucri phyllariis infra paullum induratis. — Species 
