394 COMPOSITAE 
linear divisions, the blades about equaling the petiole, this tending to persist on the lower stem 
pare blade has ‘shattered, often densely hirsute below to nearly glabrous above, becoming reduced 
Db hi ores ds di i 
Slope oak and pine belt, Upper scaiieai “ae aa aetudaiie Zones; southern New Mexico and feces 
and pe ating Chiifornin coum ihe moenine ranges of nye Diego Sagat: Californ nia, south to adjacent Son and 
Lower California. Type locality: between Babocomori and San uz, Sono 
100. CHRYSANTHEMUM L. Sp. Pl. 887. 1753. 
al or perennial, often aromati c herbs, sometimes woody at base. Leaves alternate, 
Achenes subterete or angled in outline, striate, ri r une ae wing-angled. Pappus 
a short crown or none. [From the Greek, meaning golden flow 
A genus of about 100 species, mostly natives of Europe and Asia. Type species, oF hrysanthemum coronarium L. 
Ray-flowers present and Toe white or yellow; herbage variously aromatic but not mint-scented. 
Per 
ennials; rays w 
“hey s 14-21 mm. ie: upper leaves incised. . C. leucanthemum. 
4-8 mm. long; upper leaves Sseonntaty or bipinnately parted. ‘ C. parthenium. 
Annuals; rays yellow. 
Lavaca pinnatifid, merely incised or toothed above; achenes of disk-flowers not at all winged. 
segetum 
Leaves all more or less bipinnatifid; achenes of disk-flowers winged at the apex. 3. C. coronarium. 
Rays lacking or very short-rayed; herbage mint-scented. 5. C. balsamita. 
1. Chrysanthemum leucanthemum L. Ox-eye Daisy. Fig. 5675. 
Chrysanthemum laucanthemum L. Sp. Pl. pcr Mer 
Leucanthemum vulgare Lam, Fl. Franc. 2: 13 778. 
oy neh cats aca eucanthemum a Patio at coq be Pepper: Cat. Pl. France 227. 1847. 
eucanthemum leucanihedtiag ya N. Amer. FI. 34: 1916. 
Perennial, the stems erect, 33 dm. " gh ee a creeping rhizome, simple or sparingly branched, 
RUF Seka ‘irene out or sparsely hairy. Basal leaves 4-10 cm. long including the petiole, spatulate 
or obovate, the blades shorter than the petioles, — incised-pinnatifid a the base, crenate or 
shorter or a little longer ‘te the internodes, reduced above 
and becoming bract teate, sessile, clasping, i vain : ads borne on long bracteate peduncles, 3-5 cm. 
ag ee the rays; phy llarie s 2- or 3-se eriate, coriaceous with a scarious, reddish-tinged mar- 
2 
o 
‘ 
1 ow * widen = into a rounded erose apex ; receptacle fla ttish ; — 
nt white, linear and r ed ata 14-21 mm. long; disk-flowers yellow, cy — achen 
about 2 mm. long gy) oe ey ellipsoid, ‘dark with 8-10 thickened white ribs; pappus 
A native of Mucasia occurring commonly in the Pacific States in fields and coaitnidin oa ws hington 
and Oregon and in northern Ca mr orate as far south as San oF pie Conte and Eldorado County; also <Aaiaten in 
Ventura and western San Bern no Counties. June-Sept. Whiteweed. 
Chrysanthemum S58 Aan Brouss. ex Willd. Enum. Hort. Berol. 904. A native of the Canary 
Islands, sometimes grown in cultivation, has been found growing Secaibasénaily yy wah Barbara County, Cali- 
ede 2S C. F. Sm eS at It re —— the er, petioed fea or Fog daisy (C. frutescens L.) differing from that taxon 
c a3 
The Shasta ouiny: > ‘horticultural form of C. sal wat Ramond (Bull. Soc. Philom. 2: 140. 1800), has _— 
reported as an esca gg oa a Cascade iaciaine in  Washingioa and Oregon; also Bolinas Lagoon, Mari 
fe ite poe — L. Corn Chrysanthemum. Fig. 5676. 
Chrysanthemum segetum L. Sp. 
tad ceca > ¥ laciniatum Gilib. oc gts ida 218. cha 82. 
, Baier. Fl. 2: 406. 
Pyrethrum eticiun Moench, Meth. 597. 1794. 
Erect, mostly se annual from a fibrous root, 3-5 dm. high, branched from the base or 
single-stemmed, branching above. Lower leaves and those of the midstem 3.5-6 cm. long, sessile, 
obovate to broadly spatula in outline, pingatid mostly on the upper half of the leaf, the divisions 
3.5 sai 
not reaching t the mic a upper leaves 1. cm. og sessile, clasping, incised or irregularly 
toothed or macised t the Buf heads solitary at the ends of the branches, 12-15 mm. broad not 
including the rays, ‘cad e peduncles 2-10 ay i phyllaries usually 3-seriate Ss long, broadly 
vate, rm, owish, rounded, the hyali cee widest at om 
long, tun orm, acute; ray-achenes about 2 mm. ong, somewhat piensa Pecos 
