ti i 
CREPIS COMPOSIT ZA 399 
NABALUS 
in age, and bearing toward the base scattered eglandulose bristles: stems 
rather slender, 10-20 inches high, solitary or rarely 2 from the same cau- 
dex, bearing 1-5 heads leaves broadly lanceolate in outline, 4-6 inches long, 
pinnately or bipinnately divided into linéar-lanceolate lobes: peduncles 
slender, usually thickened just below the heads: involucre 6-8 lines high; 
its bracts linear-lanceolate and barely acute, or the shorter ones acuminate: 
achenes 4-6 lines long, fusiform, truncate at the apex, not costate, but 
sometimes obscurely striate. Dry hillsides, eastern Oregon and Washing- 
ton to Montana, Utah and Nevada. ) 
C. rostrata Coville 1. c. 564. Sparingly hirsute with glandless hairs, 
and more or less tomentose: stems 4-15 inches high, 1-3 from each caudex, 
striate-angled, bearing 1-3 heads: leaves oblong to broadly lanceolate in 
outline, 4-6 inches long, pinnately parted into linear-lanceolate entire or 
toothed lobes: involucre 6-8 lines high, more or less densely clothed with 
long glandless white hairs: achenes 4-5 lines long, not costate. the upper 
part contracted into a distinct beak 1-2 lines long. Rocky hillsides, eas- 
tern Oregon and Washington to Brit. Columbia. 
C. barbigera Leiberg, Coville 1. c. 565. Slightly tomentose with a 
minute somewhat flocculent tomentum, not at all hirsute: stems several 
from the crown of a thick perennial root, 1-2 feet high, sparingly leafy and 
bearing an ample corymbose cyme of rather small heads: leaves broadly 
lanceolate in outline, 4-10 inches long, runcinately toothed or deeply cut 
into linear-lanceolate lobes: involucre 5-7 lines high, of linear, mostly ob- 
tuse principal bracts and a few very small ovate or lanceolate acute ones at 
base, all canescent-tomentose and more or less bristly with setaceous white 
bristles. Dry ridges and rocky banks, eastern Oregon and Washington. 
107 NABALUS Cass. Dict. Nat. xxxiv, 94. 
_ Leafy-stemmed perennial herbs with alternate dentate or pin- 
natifid leaves, and usually numerous small mostly nodding heads 
of white yellowish or purplish flowers. Involucre 5-30-flowered. 
cylindric, usually narrow, unchanged in age, of 1 or 2 series of 
equal bracts and a few calyculate ones at their base. Receptacle 
flat, naked. Achenes terete or 4—5-angled, usually striate, some- 
times striately pluricostate, truncate at summit. Pappus of 
copious rather rigid capillary bristles. 
N. alatus Hook. Fl. i, 294, t. 102. Prenanthes alata ia & Glabrous 
or nearly so: stems 1-2 feet high, the larger plants branching: leaves 
hastate-deltoid, acute or acuminate, sharply and irregularly dentate, ab- 
ruptly contracted or some of the upper cuneately decurrent into a winged 
etiole, or small uppermost narrow and sessile by a tapering hase: heads 
oosely and somewhat corymbosely panicled: involucre campanulate-ob- 
long, of 8-10 often livid bracts, nearly or quite destitute of scarious mar- 
gins, imperfectlv calyculate by 2 or 3 loose linear accessory ones, 5-15- 
flowered: corollas purp'ish: achenes slender, 3-4 lines long, at least 
sometimes with tapering summit. On moist cliffs, Alaska to Oregon. 
108 LYGODESMIA Don Edinb. Phil. Journ. vi, 305. 
Smooth herbs with usually rush-like rigid or tough stems, 
linear or scale-like leaves and terminal or scattered erect heads 
of pink or rose-colored flowers. Heads 3-12-flowered. Involucre 
cylindric, its principal bracts 5-8, linear, scarious-margined, 
equal, slightly united at the base, with several very short outer 
ones. Receptacle flat, naked. Achenes terete, obscurely striate 
