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UNCERTAIN OR ExcLuDED SPECIES 
Vernonta Achyrocoma Lessing ieee 313. 1829. (Achy- 
rocoma tomentosa Cass. Dict. Sci. N Nat. 26: 21. 1823.) 
Vernonia artstata (Cass.) Lessing, Linnaea 4: 313. 1829. 
(Lepidaploa aristata Cass. Dict. Sci. Nat. 26: 17. 1823. 
Vernonia hypoleuca DC. Prodr. 5: 27. 1836. Differs from 
all known North American species in having opposite three-nerved 
and three-lobed leaves, and probably does not belong in the Ver- 
noniede. 
Vernonia tnuloides DC. Prodr. 5: 62. 1836. 
Vernonta profuga DeNot. Ind. Sem. Hort. Genuen. 1840. 
Vernonta toluccana DC. Prodr. §: 30. 1836. A form with 
opposite leaves and peculiar inflorescence, probably not belonging 
to the Vernonteae. 
8. EREMOSIS (DC.) gen. nov. 
Turpinia La Liave & Lex. Nov. Veg. Desc. 1: 22. 1824. Not 
Turpinia Humb. & Bonpl. 
Monosis § Eremosis DC. Prodr. 5: 77. 1836. 
? Llerasia Triana, Ann. Sci. Nat. IV. 9:37. 1858. 
? Critontopsizs Sch.-Bip. Pollichia 20-21: 430. 1863. 
Heads 1-3-flowered, or rarely 5-flowered; involucre cylindric or 
narrowly turbinate, the inermont scales frequently deciduous with 
the achenes; receptacle subconvex; corollas tubular, regularly ie 
e 
aggregated in close round- -topped cory mbose clusters terminating 
the branches and forming a compound panicle. 
Type, Monosis salicifolia DC 
An American genus, related on the one hand to Vernon/sa, from 
which it is separated by the character of the inflorescence and the 
number of flowers in the head, and on the other to Oliganthes, 
from which it differs in the capillary pappus. 
eads 1-flowered or rarely 2-flowered. 
Leaves of a broad type, their width at least half ie nes very abruptly 
short-acuminate ; scales of the involucre acute, bse the midvein prolonged 
into a consi dons mucro. liosa 
Leaves essentially as above, acute or acutish at oe eas all acute: pale- 
own or straw-colored, rounded or subacute at the apex, not mucronate. 
. £. pallens, 
Leaves of an oblong or lanceolate type, at least 2.5 times as long as wide 
(except in &. Steetzit) ; scales acute or subacute, not mucronate. 
