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1, H. gracile Hook, ————? Small graceful perennials 15-30 cm, tall, 
the stems often 2 or 3 from the same basal tuft, slender, sparingly pubescent 
with branching hairs, nearly naked, bearing one or two linear bracts or 
rarely with a reduced leaf near the base; leaves of the basal tuft 3-7 cm, 
long, oblanceolate or spatulate, or tapering to indefinite petioles, frequently 
with nearly elliptical blades acutly narrowed to slender petioles of equal 
length, entire, for the most part nearly or quite glabrous, the stem leaves 
much smaller, bract-like; heads sometimes solitary and terminal, commonly 
4-6 in a simple often one-sided cyme, the branches of which bear stalked 
glands towards the tips; involucres bell-shaped, consisting of 2 series of 
bracts, the inner of which are 7-8 mm, long, sparingly pubescent with small 
branched white ;hairs,. bearing also stalked glands and longer slender black 
hairs; flowers yellow; achenes 2.5 mm. long. 
Common in thin soil on rounded mountain tops and ridges at high elevations, 
a 2 ages sth, 
