650 RYDBERG: Rocky MOUNTAIN FLORA 
late, indistinctly if at all triple-nerved, rather thin, obtuse, 5-10 
cm. long, entire or crenate above, glabrous except the scabrous 
margin ; lower stem-leaves similar ; upper stem-leaves narrowly lan- 
ceolate, sessile ; inflorescence paniculate, but rather narrow, with 
numerous heads; branches nearly erect; heads about 8 mm. high ; 
bracts narrowly linear-lanceolate, acute, ciliolate on the margin ; 
disk about 8 mm. wide; rays numerous, about 4 mm. long and 
nearly 1 mm. wide; achenes sparingly strigose. 
This is nearest related to the preceding, but taller and more 
slender, with narrower leaves and glabrous stem. It approaches 
the S. serotina group but has neither triple-nerved leaves nor 
secund branches. It grows in the mountains of Colorado and 
southern Wyoming at an altitude of 250c—3300 m. 
Cotoravo: North Park, 1899, Osterhout 4 (type); Berthoud 
Pass, 1903, 7weedy 5857. 
Wyominc: Copperton, 1901, Zweedy goo9. 
“Solidago radulina sp. nov. 
Perennial; stem 3-4 dm. high, grayish-puberulent; basal 
and lower cauline leaves spatulate, obtuse, crenate at the apex, 
finely puberulent ; upper stem-leaves elliptic or spatulate, acute ; 
inflorescence narrow and elongated, paniculate; heads about 4 
mm. high; bracts oblong, obtuse, or the inner linear, ciliolate on 
the margin ; rays about 2.5 mm. long, 1 mm. wide; achenes hir- 
sutulous. 
This species is intermediate between S. zana and S. pulcher- 
rima, but differs from the former in the taller habit and the elon- 
gated inflorescence and from the latter in the broader and shorter 
stem-leaves. In leaf-form it resembles somewhat S. radu/a, but is 
a smaller plant, with smaller leaves and narrow inflorescence, the 
branches of which are short and only somewhat secund. The 
type grew at an altitude of 1800 m. 
Uran: Cottonwood Cafion, 1869, Watson 558 (type in herb. 
Columbia University). 
Cotorapo: Meadow Park, 1895, Shear 5049. 
’Solidago serra sp. nov. 
Perennial with a rootstock ; stem simple up to the inflorescence, 
about 6 dm. high, more or less pubescent especially above ; leaves 
lanceolate, about 8 cm. long, acuminate, sharply toothed, rather 
