374 DESCRIPTIONS OF NEW SPECIES 
23 + Shrubby species, with alternate leaves. 
mfertiflora; (DECAND.) 
Has. St. Barbara, Upper California. A low, branching shrub, about a foot high, with the stem, 
itely tomentose. Leaves somewhat ternately pinnatifid, am- 
plexicaule at base, about one to one ai a half inches long, the segments about a line wide. Flow- 
ers at length loosely pedicellate, at feat; when in flower, in sessile clusters. Primary leaves some- 
times simply trifid, divisions usually about two long lateral ones, with the terminal ones ph 
Flowering in April. 
involucrum, and leaves beneath v] 
hic * trifida; leaves small, cuneate, amplexicaule, trifid at the summit; 
corymb contracted, many-flowered; pappus eight-leaved, alternately narrower 
and longer; stem and under side of the leaves whitely tomentose. 7 
Has. With the preceding, which it nearly resembles, but the leaves are smaller and rather 
crowded. Rays and sepals five to seven; stem densely, and, at the summit, often arachnoidly to- 
mentose. 
Bawa stechadifola; (DEcAND.) Oss. Radical leaves sant pinnatifid, 
upper leaves linear, entire, obtuse. 
Has. With the preceding. A very low shrub, leaves linear, crowded below, two inches long, 
about a line wide, whitely tomentose beneath; corymb contracted. Perfect flower not seen. Pap- 
pus eight-leaved, the four at the angles of the fruit narrower and longer. Receptacle deeply 
alveolate. 
Bahia artemisiefolia; (Lxss. ) 
Has, St. Francisco, Upper California. 
HYMENOPAPPUS. (L’Heritier.) 
\ 
Hymenopappus tenuifolius. 
Has. Plains of Red River and Missouri. 
Hymenopappus filifolius. 
Has. Plains of the Oregon. In my specimens the pappus is rather conspicuous. 
Hymenopappus * luteus; canescently tomentose; stem slender and dwarf; 
leaves bipinnatifid, ultimate segments or lobes very short, linear, obtuse; se- 
pals rounded, about twelve; florets-yellow ; panicle few-flowered, subcorymbose ; 
pedicels moderate; achenium densely lanuginous; pappus short. 
Has. kp Mousins, towards the Colorado of the West, particularly on Ham’s Fork. Usu- 
ally less than a foot high. Leaves short, with crowded segments, resembling Milfoil; for the most 
part whitely tomentose, sometimes nearly green. Root-stock thick, almost woody, very woolly 
between the leaves. Stem about a span, slender, three to five-flowered, somewhat dichotomal ; 
capituli fastigiate, florets yellow, the border narrower and less deep 
ly cleft than usual, Stigmas 
