GRINIDELIA. COMPOSI! A . 295 
18. Eucephalus. ‘Pappus copious the bristles unequal: achenes oblong, 
compressed, villous: perennial herbs without radical leaves. 
19. Oreastrum. | appus a single series of brownish scabrous barbellate 
bristles: achenes subterete, 5-»-costate : acaulescent perennials with nar- 
row entire leaves and scapiform monocephalous branches. 
20. Macheranthera. Pappus a single series of rather rigid unequal 
bristles: achenes narrowed downward, compressed, few-nerved, the 
faces somewhat striate: leaty-stemmed, branching biennials or annuals. 
21. Erigeron. Pappus scanty and fragile: achenes small, mostly 2-ner- 
ved: annual or perennial herbs. 
SUBTRIBE Il. BaccHartpEa. Headsdiscoid and unisexual. 
Corolla of the fertile flowers filiform. 
22. Baccharis.. Pappus copious, of fine and soft bristles, accrescent 
aiter floweri:g: achenes compressed, 5-10 costate; shrubby or herbac- 
eous perennials. : 
Subtribe 1, Homochromex. Gray Syn. Fl 1. Pt. 11,52. Disk 
wholly of hermaphrodite fl.wers, of the same color as the ray wher. that 
as present, mostly yellow: these corollas tuhular with more or less am- 
pliate throat and 4-5-lobed lamb — Receptacle not chaffy.flut or mere- 
ly convex. Inwolucre closely imbricate, mostly in. several. series 
3 GRINDELIA Willd. Mag. Nat. Berl 1807, 259. (Gum Pant.) 
Perennial biennial or suffrutescent plants with entire or ser- 
rite, somewhat vellucid-punctate or reticulate leaves the radical 
ones usually spatulate; the cau ine sessile or partly clasping; 
and middle-sized or large heads of vellow flowers terminating 
‘the branches. Herbage balsamic-viscid. heads many-flowered. 
Involucre h2mispherical or subglobose ;the sc les imbricated,in seV- 
eral series. Keceptacle flat, foveolate Corolla of the ray ligu- 
late, pistillate or neutral, in a single series ( in one species want- 
ing ); of the disk tubular infundibuliform, 5-toothed, perfect: 
branches of the style linear, rather acute, the hairv appendages as 
long as the stigmatic portion. Achenes obovate or oval, some- 
what angled, glabrous. Pappus of 2-8 caducous nearly smooth 
awns or corneous bristles. 
G. integrifolia )C. Prodr yv, 415 Stems rather stout, 1-3 feet high, 
usually corymbosely branched above and bearing several or numerous 
heads: pubescence soft -villous. sometimes sparse or none; leaves of ° 
soit texture, commonly entire, sometimes ser ate, cauline 3-4 inches long, 
mostly tapering from a broad base to an acute or acuminate apex: radical 
spatulate and obtuse: heads large, naked or surrounded by foliaceous 
b:acts passing into leaves: bracts of the involucre with mostly elongated 
setaceous subulate points to the bracts: achenes truncate and with an ir- 
regular undulate or obscurely 3-5 toothed border around the terminal 
are la; pappus awns stout, flattish. Along swales and ditches. Brit- 
ish Columbia to Oregon west of the Cascade Mts Flowering in 
summer. 
G Hendersoni Greene Pitt ii, 18. Flowering stems erect, a foot 
high, sparsely hirsute: leaves (on sterile basal branches) 6-8 inches 
long, blade oblanceolate, closely dentate or serrate, tapering to a 
