AND GENERA OF PLANTS. 317 



Chrysopsis pilosa, O; very softly pubescent and hairy; leaves elongated, 

 linear-lanceolate, acute, the lower ones incisely serrate, scales of the involu- 

 crum linear-lanceolate, acuminate, nearly equal; achenium with ten ribs; (a 

 character common to the fruit of other species of Chrysopsis when perfectly 

 mature.) C. pilosa, Nutt., Journ. Acad. Nat. Sci. Philad., Vol. VII., p. 66. 

 (Small specimens, in which the leaves often occur entire.) 



Subgenus. — *Phyllotheca. Rays feminine, with rudiments of stamina or fila- 

 ments. Stigmas of the ray very long, filiform, and smooth, those of the dish 

 pubescent at the apex, and somervhat lanceolate. External paleaceous pappus 

 minute, the inner pilose and scabrous; involucrum imbricate, and bracteolate or 

 foliaceous. 



Chrysopsis ^ sessiliflora; %; viscid and pubescent, leaves oblong acute, en- 

 tire, sessile; branches fastigiate, with one to three sessile capituli. 



Hab. St. Barbara, Upper California. Flowering in April. Possessing a heavy aromatic odour 

 and bitter taste, almost like that of some Gnaphaliums. The whole plant more or less hirsute 

 and viscidly glandular; leaves about an inch long, three or four lines wide, linear-oblong, rather 

 crowded, narrowed below, sessile. The capitulum surrounded by leaves at its base, like those of 

 the stem, only narrower and longer. The outer pappus scarcely visible. Rays narrow and elon- 

 gated, deeply toothed, about thirty. 



*PITYOPSIS.t 



Flowers heterogamous, rays feminine ; florets of the disk five-toothed, tubular. 

 Stigmas slenderly filiform, equal and obtuse, in the ray smooth, in the disk 

 hirsute. Receptacle alveolate, dentate, naked. Involucrum imbricated in 

 several unequal series; scales carinate, rigid, membranaceous on the margin. 

 Achenium slender, cylindric-fusiform, internally angular, even, and ten-stri- 

 ate, contracted and rostrate at the summit, acuminate below; pappus double, 

 each in a single series, the external short, slender and paleaceous, the inner 

 pilose and scarcely scabrous, (of forty to forty-five rays.) — Perennials, with 

 alternate, entire, filiform or grass-like leaves, naked, or more usually clothed 



t P. pinifolia having leaves resembling those of the pine tree, and hence the allusion. 

 VII.— 4 e 



