416 DESCRIPTIONS OF NEW SPECIES 
two or three feet high, in the manner of the Furze bush of Europe, (U/ex.) Spines half an inch 
to three-quarters of an inch long, sharp and somewhat curved. From under the flowering clusters 
come out often tomentose branches, entirely clad with alternate spines, in two rows, in the axills 
of which are formed buds, which afterwards produce leaves. Capituli on long peduncles; the 
sepals distinctly carinate, oblong-lanceolate, receptacle entirely naked. The leaves thinly tomentose, 
almost green. ‘The villous hairs of the ee shorter than in the preceding; bristles of the. 
pappus slender, and all similar. 
* LAGOTHAMNUS. 
Terrapymia, but with the capitulum five-flowered, the involucrum subcampa- 
_nulate, of five (or rarely six) flat, oblong sepals i in a single series. Recepta- 
cle naked, alveolate, dentate. Branches of the stigma subterete, obtuse, the 
wees part, as well as the summit, pubescent. Achenium oblong, thickly 
clad from the ‘base with long, slender, fastigiate, minutely serrulate hairs of 
‘ae 
the same height with the true pappus, which consists of about twenty stout 
and rigid barbellated bristles—A decumbent, canescent, much branched, 
spiny shrub. _ Leaves clustered in the axills of preceding slender spines, en- 
tire, linear, minute, thick, almost acerose and smooth. Flowers solitary, 
axillary, terminating small branchlets; ‘the pedicels bracteolate, appearing, 
- from their situation above each other on the branch, to form a raceme; 
branches and inyolucrap white and densely tomentose. Tae name allities 
hing of the plant.) — 
1US seater opty ts 
aa. On the seid plains of the Rocky Mountains, and near Lewis’ River, as well as Ham’s Fork 
of the Colorado of the West: common. Flowering in July and August. A much branched, 
spreading shrub, —" or Jane feet high, with the young shoots, as well as their spines, soft and 
ely tomentose. — clustered, oblong-linear, somewhat convex, perfectly smooth at all 
times, scarcely more than two lines long, by half a line wide. Capituli mostly nodding, numerous; 
the florets bright yellow and large, deeply cleft, with smooth, linear, acute segments. Cone of 
anthers exserted, the cusps linear and acute. Stigmas rather small, pubescent below as well as at 
the summit. Involucrum conic-campanulate, three of the divisions oval obtuse, two other smaller 
‘ . Re: About tmenty of the bristles which immediately surround the floret are about as stout 
m | as in Te etradymia. The most singular part of the plant is the hes et og 
‘ , the hairs of which are very slender, and as much serrulated as in the ru 
of Senecio, which they wholly resemble; they appear also nearly all of a length, and come up 
nearly even with the few bristles of the true pappus. 
