412 COMPOSITAE 
i nagiicnmen pycnocéphala (Less.) DC. Beach Sagewort. Fig. 5708. 
Oli. Less. ee 524. 1831. 
Artemisia phi stiahding DC. paige 6: 83 
Artemisia pachystachya he 0 é rt 
Artemisia pycnostachya Nut rire “A r. Phil. Soc. II. 7: 401. 1841. 
rtemisia campestris ey PERE "Hall & Clem. > tenes Inst. Wash. Publ. No. 326: 123. 1923. 
Artemisia campestris var. pycnocephala M. E. Peck, Man. Pl. Oregon 768. 1941. 
Perennial herb, 2-6 dm. high; stems several or numerous on a stout woody caudex, erect, or 
ascending near the base, net! leafy up to the inflorescence. Leaves twice or thrice pinnately di- 
vided into narrow, linear or linear-spatulate divisions, densely “ana permanently silky- Sh stor 
ae cm. long, reduced upward inflorescence paniculiform but very dense and spike-like ith 
sile and erec Ce i 
pheric, 54. mm. high. 
oot 3 as broad, the vabptie Hes ee. villous ; ray-florets 8-15; disk-florets 12-25, the pistil sterile ; 
oye aabeylndric, glabrous, t of the ‘di sk- ea. abortive ; receptacle glabrous. n= 9. 
n beaches, Humid atone Zone; from central Oregon eouek to Point Sur, California. Type 
San 
locality : Cattenie Aug.—Sept 
17. Artemisia spinéscens D. C. Eaton. Bud Sage or Spring Sagebrush. Fig. 5709. 
nna desertorum Nutt. Trans. Amer. Phil. Soc. II. 7: 417. 1841. Not Artemisia desertorum Spreng. 
1826 
Artemisia spinescens D. C. Eaton, Bot. King Expl. 180. 1871. 
Rounded shrub, 0.5-5 dm. tall, args — aoe and much ee from the base, 
mer ta a spiny by the itis eae of the of prev Set inflorescences. Leaves up to 
about 2 cm. long including the petiole, a a 3- a 5. Jobed , the ‘lohes Dace cleft into linear- 
spatulate ra oa esedll villous, reduc ed and less divided upwa ; inflorescence racemiform, 1-5 
. lon me leafy-br. ih sometimes Sodeten to a single head; involucre -broadly turbinate, 2-3.5 
ide, oe scarcely unequal phyllaries thick and herbaceous with narrow 
seatigue margins, pt villous; ray- s 2-8, the corolla long-hairy; disk-florets 5-15, the 
cor long-hairy, the pistil stile style undivided with an expanded penicillate summit enes 
olla -hai 
ellipsoid, densely arachnoid-hairy, those of the disk-florets abortive and essentially absent; re- 
acle glabrous 
lains and hills, Sonoran Zones; southeastern Oregon and eastern California north of the San 
Bernardino Mountains to South westeea Ricgiisna and New —— ee locality: ‘‘Rocky Mountain plains, in 
arid deserts, towards the north sources of the Platte.’ Apri Jun 
18. Artemisia tridentata Nutt. . 3am Fig. 5710. 
Artemisia tridentata Nutt. Trans. Amer. Phil. Soc. IT. 7: 398 41. 
pidemencs tridentata var. rt ha A Gray, Proc. Amer. site} 19: 49. 1883. 
temisi ta Rydb. . Am 1, 34: 283, 
Artemisia vaseyana Rydb. 
Artemisia tridentata subsp. — ‘Hall & Clem. Carnegie Inst. Wash. Publ. No. 326: 136. 1923. 
Strong-scented evergreen shrub, rounded or somewhat spreading and flattened on top, rarely 
root-sprouting, go — sually 3- 30) ‘ten, high, with a single short trunk or with few ascending 
branches from th older stems geen with ee ie or light brown bark, younger 
stems covered Fc : se nse tomentum, striated. Leaves of vegetative shoots ante or short- 
s 
1-4 cm. long o ey sate —1. sigs wi e mostly th tim ong 
of the Hatertiae shoots the same or more often entire and linear to tactolate. rounded t ; 
inflorescence well exceeding to barely exceeding the leafy shooth narrowly to broadly panieuliform, 
bi e or sometimes drooping ; involucre .8 mm. ‘igh 2-2. 8 mm. wide, the outer 
phyllaries short, orbicular-ovate, canescent, the inner elliptic, what Bo igh fee so, obtuse, ei 
cent or sometimes nearly glabrous; ray-florets absent ; disk- Horcts usually 3- ras many as 12 
in some high-elevation forms) ; achen a ee alah turbinate, resinous- eater van rarely sparsely 
short- us ; receptacle glabrous. a re 
On dry plains and hills and apne ap into the mountains to timberline mostly on rocky open ground, Upper 
Sonoran Zone to Hudsonian Zon hy Poe sn and palifors ia mostly east be the err 
axis into the Coast a of southern California to northern Lower California and to the w n edge of the 
reat Plains. Type ef the Oregon [Columbia], “a eoty tSnake) River "July—Oct. 
A om eh polymorphic sin . wk = eat v vartahion and numerous ecological races, some of which may be 
int ti Sag acs, if s affies aa correlation of ecologic and morphologic euatacters’ an be discovered. To 
ate this ae Sy 
Senate aban. ge Sioa hes Gray) Hall & Clem. Sespenie Inst. Wash. Publ. No. 326: 
1923. gg nds goons A. Gray, mer. Acad. 17: ae one tridentata var, pene Jepson, Man. 
Fil. Pl. Calif. 1140. 1925.) Rounde z go Moe ne shrub, usually 10-20 dm. Ae ine leaves mostly mond or narrowly 
spatulate, entire or shallowly notched or toothed at the apex ee frequen ntly with 3 short tees t lobes, rarely 
more deeply divided or pinnately 5-lobed; achenes glandular ps. reray Short villous to. “arachnoit hairy; 
otherwise much the same as A. tridentata subsp. tridentata. n= 18. Western Mojave Des of California, 
oan toward the Pacific Coast through the Santa Clara Valley. Type loca ae “Newhall, Los Angeles 
19. Artemisia arbiscula Nutt. Dwarf Sagebrush. Fig. 5711. 
Artemisia arbuscula Nutt. Trans. Amer. Phil. Soc. II. 7: 0 ys 
Artemisia tridentata subsp. arbuscula Hall & Clem. Carnegie Inst gta No. 326: 138. 1923. 
Artemisia tridentata var. arbuscula McMinn, Ill. Man. Pion Sig sta esi 
