146 BOTANY. 



Solidago pumila, T. & G.— Stems several, from a woody procumbent 

 caudex, '2-4' long and leafy, angled, striate and nearly smooth ; leaves rigid, 

 mucronate, linear, or linear-lanceolate, 9-18" long; heads few-flowered, 

 clustered in 3 or 4, and disposed in a small corymb : scales of the involucre 

 in several series, outer ones much shorter, rather acute, thickish ; rays short 

 and (like the disk-flowers) 2-4. Scales of the involucre appear (from my 

 single specimen) to vary much in shape, acuteness, and thickness of the 

 keel. — Eastern Arizona, at 6,500 feet, Loew. 



Solidago nemoralis, Ait,— Twin Lakes, Colorado (408); also a 

 variety from Nevada, Utah, and San Francisco Mountains, Arizona. 



Solidago spaesiflora, Gray (Proc Amer. Acad, xii, p. 58).—" Vir- 

 gaurea, Virgatce: Scabrous-puberulent; lower leaves unknown, upper ones 

 and floral ones smallish, lanceolate (6-12" long); racemes loosely few- 

 headed and loosely thyrsoid; scales of the involucre linear, puberulent, 

 at apex rather acute and greenish; ray -flowers about 10, ligules small; 

 disk-flowers 4-5 ; achenia silky-pubescent— Camp Lowell, Arizona." 

 (706.) 



Solidago mollis, Bartl. (S. incana, T. & G., var.. /?. ?) — This rather 

 remarkable form (782) from Arizona is canescent on the stem, 2-4° high ; 

 leaves decidedly scabrous, tripli-nerved, entire or sharply toothed toward the 

 apex; head medium-sized and densely crowded in a contracted, secund 

 panicle ; scales of the involucre lanceolate, acute, and somewhat scarious 

 on the margin, and with a darker midrib ; achenia pubescent ; branchlets of 

 the panicle and the pedicels densely and softly tomentose. 



Solidago Marshalli. — Erect, nearly smooth, or slightly pubescent in 

 lines ; leaves linear-lanceolate or lanceolate, entire, sessile, tapering toward 

 either end; glandular dots and veinlets transparent by transmitted light, 

 1-4' long and 2-7" wide ; panicle compound, and with the branchlets 

 strongly secund ; heads medium-sized, rays 8, disk-flowers 9 ; achenia 

 short, cylindrical, hairy ; scales of the involucre lanceolate or oblong, 

 obtuse, thickish, and under the lens minutely roughened on the margin ; 

 pappus shorter than the disk-flower ; bracts minute, almost subulate, about 

 three on each of the slender smoothish pedicels. 



