178 COMPOSITE. 



* Yellow-flowered species. 



1. L. Germanormn, Oham. Low, slender, branching and spreading 

 from the base; branchlets at length glabrate, purple: lower leaves sin- 

 uate-pinnatifld, those of the branches narrowly oblanceolate: involucre 

 hemispherical, its brads more or less green-herbaceous not glandular. — 

 San Francisco and southward in sandy soil near the sea. 



2. L. gland ulif era, Gray. Erecl, stoutish, diffusely branched above: 

 leaves more irregularly and deeply toothed or cleft, those of the stem 

 more numerous, ovate or oblanceolate, and of the branchlets minute and 

 almost crowded, rigid, beset along the margin with yellowish large 

 glands: involucre campanulate to turbinate, its bracts more or less 

 glanduliferous. — Plains of the lower San Joaquin and southward. 



* * Flowers pale- or deep-purplish. 



3. L. ramulosa, Gray. Erect, 1—2 ft. high, very loosely branching, 

 the glabrate branchlets and upper leaves more or less hirtellous and 

 glandular: involucre campanulate or turbinate, 10 — 20-flowered: corollas 

 short, purple: style-appendages with minute setiform tip. — Dry hills 

 from Sonoma Co. southward. 



4. L. Ieptoclada, Gray. Taller and more slender, with almost filiform 

 branchlets bearing few or solitary 5 — 20-flowered heads: corollas elon- 

 gated: style-appendages with a conspicuous subulate tip. — Same range. 



5. L. virgata, Gray. More densely woolly: stem and virgate branches 

 rigid: upper leaves appressed, concave, carinate-nerved: heads spicately 

 sessile in the axils of the leaves: involucre cylindrical, 5 — 7-flowered: fl. 

 pale or whitish: style-appendages with conspicuous subulate tip. — 

 Plains of the lower San Joaquin and Sacramento. 



6. L. nana, Gray. Stems very stout, short, depressed, the whole plant 

 white- woolly: heads large {% in- high), oblong, 10 — 20-flowered; outer 

 bracts linear-lanceolate, mucronate-acute or cuspidate, scarcely herba- 

 ceous in any part, inner scarious-chartaceous, while, tapering into a rigid 

 subulate point: fl. crimson; style-appendages with no cusp: achenes 

 short and turgid; pappus red. — Foothills of the Mt. Diablo Range and 

 eastward. July — Sept. 



16. CORETHROGYNE, DeCandolle. Genus very nearly allied to 

 Lessingia; distinguished chiefly by the numerous and altogether ligulate 

 violet ray-corollas : the habit in our species (the typical), quite different, 

 the roots being perennial, the branches often subscapiform and mono- 

 cephalous; the heads large; involucres hemispherical. Style-appendages 

 strongly hairy but not cuspidate. — June — Aug. 



1. C. Callfornica, DO. Suffrutescenl and diffusely branched from the 

 base, densely while-floccose; the assurgent flowering branches numerous: 



