‘6, Erigeron L. 
Annual, biennial or perennial herbs itn alternate leaves, these 
frequently in basal turts, the stems subscapose, or more or less evenly 
distributed along the stem, the basal leaves prevailingly spatulate or ob- 
lanceolate, passing into the sessile oblong or linear stem leaves. Heads 
solitary or numerous, most often in corymbs, rarely in oblong panicles, their 
involucral bracts mostly in ¢-5, rarcly in 4, series, subequal cr somewhat 
unequal, similar, lanceolate or subulate, the tips mostly scarious or thin, 
receptacle flav, naked. way-flowers pistillate, white, lavender, violet or 
pink, their limbs \ith one exception]1 mu. wide or less} Disc-flowers — 
perfect, yellow or yellowish. Achenes narrowly top-shaped, mostly flattened, 
bearin, 5 veins; pappus a sinsle series of scatrous bristles, frequently bear- 
in; a secondary row or very short bristles at their bases. 
O Xay corolias cluish-pury le ye-2eo mme wide |, He SalSuginos. 
] Ab athe, Orpctecdad Luke = 
0 Hay corollas 14 mi. wide or Less} al 
! 
“, LOW turted plants 5-4C cm. tallgtheir leaves or leat} — 
. x i] 4 
Gsegnents if aiviaed,i-c mie broad 
4 Leaves vrevailingly twice ternats, at least once 
1. 
u 
ernate ge COmM-ositus 
4 Leaves entire, linear or linear-oblanceolate 
6 Leaves ana stems hoary-pubescent with small 
Oo 
4 
(Leaves and stems thiniy hirsute with sy 
o the former <-5 mn. wide 
appressed eatei 5 as vormer 1-2 mn. wide 9g J. filifolius 
Ccaespitosus 
—_, 
@ Plants 5-20 cm. tall, usually densely 
caespltose; leaves o@tanceclate, 
jz.\ blunt or short acwninate; neads sol- 
\itary ana terminal on each stem 
rlants £0-46 cm. tall, usually not 
B) ’ dv 
caesritose; leaves linezr or lineane| = 
3 4 
\2<« lanceolate, tapering; neaus <-3 on 
eacn stem 5. se Corymbosu 
A srect vlants commonly 50-20 ca. or more, or if less, 
/depauperate individuals or an annual srecies with 
e{ heads 4-7 mi. broad or if perennial, the basal 
\leaves spatulate, their blades 4-12 mm. broad 
4 Heads at most 5-7 mm in ciameter; inflorescence 
6 an oblon: yanicle with subeoual branches g. = canadense 
