Spring Flora of Oklahoma 
193 
12'-high or less. Basal leaves obovate to spatulate, long, 
usually toothed. Stem leaves linear to linear-oblong, toothed or en¬ 
tire. Heads 7"-10" broad. Rays white or purplish, numerous. 
Pappus of ray-flowers and disk-flowers alike, of few long bristles 
and short small scales. 
Moist prairies and plains. April-May. Kingfisher County. 
VIII. BAOCHARIS L. 
Dioecious shrubs or herbs. Leaves alternate. Heads of 
tubular flowers, paniculate or corymbose. Involucre cam- 
panulate, bracts imbricated in several series, the outer 
shorter. Receptacle flat, naked, commonly foveolate. Co¬ 
rolla of the pistillate flowers slender, that of the staminate 
tubular, 5 lobed. Style-branches of the sterile flowers rudi¬ 
mentary, tipped with an ovate, pubescent appendage. 
Achenes more or less compressed, ribbed. Pappus of the 
fertile flowers copious, capillary, that of the sterile flowers 
short. 
1. Baccharis salicina T. & G. Willow bacciiaris. A glabrous 
much-branched shrub, 3°-6° high, the branches ascending. Leaves 
oblong-lanceolate, more or less 3-nerved, mostly obtuse at the apex, 
narrowed into a cuneate base, 12"-18" long, repand-dentate or entire. 
Heads in clusters of 1-9. Pappus usually but a single series of 
nearly white capillary bristles. 
Frequent along rivers. May-July. 
IX. FILAGO Loefl. 
White-woolly annual herbs. Leaves alternate, entire. 
Heads small, discoid, clustered, usually subtended by leafy 
bracts. Bracts of the involucre few and scarious. Re¬ 
ceptacle convex, chaffy. Outer flowers of the heads in sev¬ 
eral series, pistillate, fertile. Central flowers few, perfect, 
mainly sterile. Achenes compressed or terete. Pappus 
none. 
1. Filago prolifera (Nutt.) Britton. Filago. Stem simple or 
branched at the base, very leafy, 2'-6' high. Leaves spatulate, ses¬ 
sile, 4"-8" long. Heads in a sessile, leafy-bracted cluster. Recep¬ 
tacle convex. Chaff of the central sterile flowers woolly-tipped, that 
of the fertile flowers scarious, mostly glabrous. 
In dry soil. April-July. Common. 
