COMPOSITAE. 



j/o 



leaves linear, 1-3 cm. long; heads 2-3 mm. high, long-peduncled, loosel\- 

 corymbed; tegules 4-8, enclosing as many ray-Howers which are scarcely 

 longer; disk-flowers solitary; akenes black, obovate but lop-sided, that of the 

 disk-flower straight, those of the ray-flowers curved. 



Dry ground, rather common. First collected by Menzies. 



Madia madioides (Nutt.) Greene. Perennial, somewhat villous; stems 

 slender, erect, 40-60 cm. high, loosely branched above; leaves linear-lanceolate, 

 sparsely serrate, sessile, 5-10 cm. long, all but the uppermost opposite; in- 

 florescence a loose panicle; heads slender-peduncled, 8 mm. high, many- 

 flowered; tegules 8-12, glandular, each enclosing a fan-shaped ray-flower 

 8-10 mm. long; disk-flowers sterile, with a pappus composed of oblong scales; 

 akenes of the ray-flowers broad, curved, compressed. 



Very common in open woods; first collected by Nuttall at the mouth of the 

 Willamette River. 



Madia glomerata Hook. Stems erect, simple or with erect branches, very 

 leafy to the top, 30-100 cm. high, hirsute, the inflorescence glandular; leaves 

 linear or linear-lanceolate, ascending, 2-6 cm. long, scabrous and hirsute; heads 

 densely crowded, at length somewhat racemose; ray-flowers few or none, short; 

 disk-flowers 2-5; corollas pubescent; akenes black, club-shaped, those of the 

 ray-flowers flattened and 1 -nerved on each face, those of the disk-flowers 

 somewhat 4-angled; pappus wanting. 



In dry open ground; Puyallup, Piper; common in the Willamette Valley. 



Madia elegans Don. Annual, hirsutely pubescent and somewhat glandular; 

 stems erect, 30-120 cm. high; leaves lanceolate to linear, entire or nearly so, 

 broadest at base, sessile, the lower ones much crowded, 5-10 cm. long; in- 

 florescence corymbose; tegules 5-15, hirsute; ray-flowers 12-20, acutely 3-lobed, 

 15-20 mm. long, yellow or often brown at base; disk-flowers sterile; akenes 

 much compressed, obliquely obovate. 



Prairies, Willamette Valley and southward; said by Hooker to have been 

 collected by Douglas and by Scolder at Fort Vancouver, W'ashington, but it is 

 doubtful if it occurs north of the Columbia River. 



Madia racemosa (Nutt.) T. & G. Stems erect, 30-90 cm. high, simple or 

 branched above, hirsute below, glandular above; leaves linear or lanceolate, 

 acute, 2-8 cm. long; heads 6-10 mm. high, hemispherical or broadly ovoid, 

 racemosely or corymbosely arranged, commonly peduncled; corolla pubescent; 

 ray-flowers 5-8, rarely 10; disk-flowers few; akenes flattened and nerved on the 

 broader faces or the nerve lacking; pappus none. 



Very common in dry ground; first described from specimens collected by 

 Nuttall at the estuary of the Willamette River. Very variable and as here 

 describee including M. dissitifiora T. & G., whose supposed distinctions break 

 down completely. 



Madia sativa Molina. Annual, viscid pubescent and very glandular; 

 stems stout, 30-90 cm. high, erect, simple or with erect branches; leaves lan- 

 ceolate or the upper linear, sessile, broadest at base, entire, 5-10 cm. long; 

 inflorescence narrowly paniculate, the heads mostly in dense clusters; ray- 

 flowers 5-12, their corollas pale yellow; disk-flowers 4-8 mm. long; ray- 

 akenes curved, obovoid, compressed, often 1-nerved on each face; disk-flowers 

 fertile, their akenes cimeate-oblong, somewhat 4-angled. 



In dry ground, Willamette Valley and southward. 



Madia sativa capitata (Nutt.) Piper. Heads densely congested, the in- 

 florescence capitate or short-oblong. 

 Vancouver Island to California. 



