356 COMPOSITAE. 



Agoseris glauca aspera (Rydb.) Piper. Perennial, the whole plant thinly 

 white tomentose; leaves linear to lanceolate, entire or sparsely denticulate, 

 5-10 cm. long; scapes 6-20 cm. high; involucre campanulate, 2 cm. high; 

 tegules loosely imbricated in 2-3 series, the outer ones shorter, broadly lan- 

 ceolate, acutish, tomentose, the inner glabrous and acute; ligulate corollas 

 pale yellow; akenes fusiform, 10-12 mm. long, tapering into a stout beak 

 shorter than the body; pappus copious, white, the bristles scabrous. 



In the Cascade Mountains at about 2000 m. altitude. 



Agoseris laciniata (Nutt.) Greene. Glabrous or sparsely pubescent; leaves 

 lanceolate, saliently dentate or pinnatifid into linear lobes, 10-20 cm. long; 

 scapes 30-60 cm. high; involucre somewhat tomentose at base or glabrate, 

 2-3 cm. long; flowers pale yellow; akenes about 15 mm. long, the slender beak 

 several times as 1 long as the body; pappus shorter than the beak, bright white. 



In dry open woods, common. 



Agoseris grandiflora (Nutt.) Greene. Perennial, loosely pubescent or 

 glabrate; leaves lanceolate or oblanceolate, attenuate-acuminate to obtuse, 

 mostly pinnatifid into numerous lobes, 10-20 cm. long; peduncles stout, 30-60 

 cm. high; involucre campanulate, tomentose at base, 3-4 cm. high, the bracts 

 in about 3 series; akenes fusiform, acutely 10-ribbed, 6 mm. long, attenuate 

 into a slender beak, 20 mm. long; pappus bright white, soft and capillary, 

 much shorter than the beak. 



In dry ground, Willamette Valley, where first collected by Nuttall; common 

 east of the Cascade Mountains. 



Agoseris aurantiaca (Hook.) Greene. Sparsely pubescent to nearly 

 glabrous; leaves spatulate to lanceolate, entire or denticulate, rarely toothed 

 or incised, obtuse, short-petioled; scapes 20-40 cm. high; involucre campanu- 

 late, 15-20 mm. high; principal tegules lanceolate and acute, the outer ones 

 oblong, obtuse; flowers orange, becoming purplish; akenes cylindraceous, 

 tapering into a beak as long as the body. 



Common in alpine meadows at about 2000 m. altitude. 



Agoseris gracilenta (Gray) Greene. Glabrous; leaves narrowly lanceolate 

 or linear, mostly entire; scape slender, 30-50 cm. high; involucre campanulate; 

 tegules lanceolate, acute, glabrous except at base; flowers orange; akenes 

 fusiform, the body 6-8 mm. long, the beak 8-10 mm. long. 



Alpine meadows in the Olympic and Cascade Mountains. 



Agoseris elata (Nutt.) Greene. Glabrous, somewhat glaucous; leaves 

 spatulate to lanceolate, dentate to pinnatifid, 15-30 cm. long, thickish in 

 texture; scape 15-50 cm. high; head 3 cm. high; involucre hemispheric; tegules 

 lanceolate, acute, pubescent; akenes 6-7 mm. long, the beak as long as the 

 body. 



Prairies, not common. First found by Nuttall near the estuary of the 

 Willamette River. 



Agoseris apargioides (Less.) Greene. Sparsely pubescent, becoming 

 glabrate; caudex stout; leaves spatulate, mucronate, somewhat dentate, 7-10 

 cm. long; scapes exceeding the leaves, 10-15 cm. high; heads 10-12 mm. high; 

 involucre campanulate; tegules green, the outer oblong, mucronate, pubescent, 

 the inner lanceolate, acuminate; akenes 8-10 mm. long, the beak as long as 

 the body. 



Sand dunes along the ocean coast. The northern form has been considered 

 distinct from the California form under the name A. maritima Sheldon. 



492. HIERACIUM. Hawkweed. 



Hispid and hirsute often glandular perennials with milky juice; 

 leaves merely toothed or entire; heads small to medium, panicu- 



