Venidium. | COMPOSIT& (Harv.) 459 
A. Perennial ; stems elongate, branching, leafy ; leaves subentire (not lyrate), sessile, 
more or less ‘stem-clasping : 
Outer inv. scales lanceolate inate Rey, long, with 
spreading points ...  .. ... (1) semipapposum, 
Outer inv. sc. shorter than ‘the i inner, erect or ‘suberect : . 
Lvs. linear or eee smooth above ; achenes 
tlinelong . ... (2) angustifolium. 
Lys. = bristly above ; ‘ach. 2 long, very smooth (3) macrospermum, 
B. Perennial ; stems elongate, leafy; leaves lyrate, lobed or pinnatifid, petioled : 
Petioles (or the wpper ones) conspicuously eared and clasping at base : 
Stem pilose on the striz; lvs. green, and scabrous 
above... (4) discolor. 
Stem and Ivs. more or less albo-tomentose, not ‘pilose : 
Lys. long-petioled, the petiole with a deewrrent 
ear, lateral lobes small, or none, terminal 
roundish, sinuate . (5) decurrens. 
Leaves short-petioled, ‘not decurrent-eared ; lat. 
lobes oblong, terminal ovate, toothed ... (9) arctotoides. 
Petioles not conspicuously ear-clasping at base : 
Outer inv. se. leafy, large, and spathulate ...... (7) spathuligerum. 
Outer inv. sc. small, acute or taper-pointed : 
Lys. long- petioled, ovate or lyrate, tomentose ; 
inv. se. woolly. 
Slender; leaves ovate or cordate, repand, 
green ‘and hispidulous above _... (6) perfoliatum. 
Stem angle-ridged ; leaves mostly lyrate, 
with few lat. lobes, canescent on one or 
both sides, smooth ‘above... (5) decurrens, 8. 
Lys. lyrato-pinnatifid or pinnati-partite, hispi- 
dulous on both sides ; inv. sc. scabrous... (8) hispidulum. 
C. Perennial: stems short and tufted ; leaves chiefly radical and subradical, lyrate 
or pinnati-partite : 
Leaves lyrato-pinnatifid, green above, white beneath .... (11) microcephalum. 
Leaves pinnati-partite, lobes small, very blunt, in many 
eras the upper lobulate, all thinly cobwebby on both 
... (10) erosum, 
D. Kitial with fibrous roots; stem either long and leafy, or scarcely any; leaves 
various : 
Nearly stemless ; lvs. lyrate, subcanescent ... ... ... (16) subacaule. 
More or less caulescent ; stem simple or branched : 
Lys. ovato-lanceolate, subentire, pubescent... .... (17) fugax. 
Lvs. ovate-sublyrate, tomentose beneath ... ... (18) Kraussii. 
Lys. lyrato-pinnatifid or pinnatifid : 
Cobwebby-tomentose ; leaves ac es ee 
fi, heads very large and showy . ..- (15) Wylei. 
More or less hirsute, with long, jointed, “soft hairs : 
Achenes cross-ridged and tubercled : 
Stem branched, thinly pilose ; heads 
very large (13) macrocephalum. 
Stem eel one-headed ; Teaves 
‘ chiefly oot cr a ... (14) aureum, 
Achenes smoo’ coronate; arts very 
MPsUbe: So ese ie vs. «+ (12) hirsutum. 
1. V. semipapposum (DC.! 1. c. 491); stem herbaceous, erect, branched, 
furrow-striate, tomentose and more or less piloso-scabrid ; cauline leaves 
oblong or subpanduriform, ear-clasping at base, subentire or sinuous- 
