SYNOPSIS OF THE FLORA OF COLORADO. 87 



MACRORRHYNCHUS 1 GLAUCUS, EatoD. (Troximon glaucum, Nutt.) 

 King's Hep., vol. 5, p. 204. Perennial, smooth and somewhat glaucous; 

 leaves linear-lanceolate or lanceolate, 3'-6' long, about 6" broad, entire 

 or slightly runcinately- toothed; scape 6'-9' high; involucral scales un- 

 equal, the outer ones shorter and broadly ovate-lanceolate, slightly 

 pubescent, inner ones lanceolate, 7"-9" long; achenia 10-ribbed, con- 

 tracted toward the summit, but scarcely beaked; pappus rather coarse, 

 longer than the achenium. Hall & Harbour, 354 in part. Wet Mountain 

 Yi\i\ey,- Brandegee. Common on the plains of the Platte, Coulter. Gray's 

 Peak, Dr. Smith. 



Var. DASYCEPHALUS, T. & G. " Involucre woolly, at least when young, 

 exterior scales spreading; leaves and scape often somewhat pubescent; 

 receptacle sometimes but not always furnished with a few linear, acu- 

 niinate, chaffy scales intermixed among the flowers." Hall <* Harbour, 

 356. Along the Platte and in the Sierra Madre Kauge, Coulter. 



MACRORRHYNCHUS TROXIMOIDES, T, & G. Perennial, smooth and 

 somewhat glaucous; leaves oblanceolate, or linear-lanceolate, 4 / -10 / long, 

 3"-9" wide, acuminate or obtuse and slightly apiculate, entire or lacini- 

 ately pinnatitid; scapes 4 / -2 high; involucre Q"-W long; scales nearly 

 equal, lanceolate from a broad base; acheiiia 10-ribbed, at length produced 

 into a slender beak two-thirds as long as the achenium proper and with 

 it slightly or considerably longer than the pappus. Hall & Harbour, 

 355. u Very variable at all heights, even alpine; flowers in July and Au- 

 gust. 7 ' Near Denver, B. H. Smith. Wet Mountain Valley, Brandegee. 

 Plains of the Platte, Twin Lakes and White House Mountain at 12,000 

 feet altitude, Coulter. 



TARAXACUM PALUSTRE, DC. Sparingly toinentose, at length very 

 smooth ; leaves lanceolate or oblong-spatulate, entire, sinuate, or strongly 

 runeinate, usually shorter than the scape, 4 / -8 / long, 5"-2' broad, obtuse 

 or acutish; inner scales of the involucre, more or less corniculate, 

 lanceolate, outer scales ovate, appressed, much shorter; achenia inuricate 

 and spiuulose towards the apex, when mature scarce half the length of 

 the beak. Scapes 4 / -12 / high. Hall & Harbour, 357. Wet Mountain 

 Valley and Sangre de Cristo Pass, Brandegee. Clear Creek Canon; 

 Mount Lincoln, at 14,000 feet altitude, and White House Mountain, at 

 13,000 feet, Coulter. 



MULGEDIUM PULCHELLUM, ^utt. Hall &Harbour, 344. Bear Denver, 

 Dr. Smith; B. H. Smith. Colorado Springs, Porter. 



LOBELIA SYPHILITICA, L. Wet Mountain Valley, Brandegee. Near 

 Denver, Dr. Smith ; Greene. 

 LOBELIA CARDINALIS, L. Pueblo, Greene, 1873. 



CAIWPANULACEJE. 



CAMPANULA ROTUNDIFOLIA, L. Hall & Harbour, 358. Xear Denver, 

 Dr. Smith; B. H. Smith. Colorado Springs, Porter. Xorth Park, Hay den. 

 Plains of the Platte, Coulter. 



LM ACRORRHYXCHUS, Lessing. Heads many-flowered, the flowers all ligulate ; involucre 

 campanulate; the lanceolate or ovate-lanceolate scales imbricated in 2-3 series, the 

 inner ones scarious-niargined, the onter ones sometimes shorter, often foliaceoiis. Recep- 

 tacle naked, or very rarely with a few chaffy scales among the flowers. Achenia gla- 

 brous, terete or slightly obcompressed, 10-ribbed or winged, narrowed above and in most 

 species at length produced into a long slender beak, the apex dilated into a small flat 

 disk. Pappus of copious, white, scarcely, scabrous, soft and capillary or coarser and some- 

 what rigid bristles. 



