1918] 
GREENMAN—MONOGRAPH OF SENECIO 79 
late, sparingly calyculate, floccose-tomentulose to rarely gla- 
brous; bracts of the involucre about 13, lanceolate, 7 to 10 mm. 
long; ray-flowers about 8, rays narrowly oblong, 10 to 12 mm. 
long, conspicuous; disk-flowers 30 to 40; achenes glabrous, 3 
to 3.5 mm. long. 
Distribution: mountains of Colorado. 
Specimens examined: 
Colorado: mountains south of Ward, Boulder Co., 18 July, 
1901, Osterhout 2424 (Phil. Acad. Nat. Sci. Herb.), со-түрЕ; 
head-waters of Clear Creek and the alpine ridges lying east 
of ** Middle Park,” coll. of 1861, Parry 20 (Gray Herb., Phil. 
Acad. Nat. Sci. Herb., and Мо. Bot. Gard. Herb.) ; Lat. 39-412, 
coll. of 1862, Hall & Harbour 330 (Gray Herb., Phil. Acad. 
Nat. Sci. Herb., and Mo. Bot. Gard. Herb.) ; Mt. Parry, coll. 
of 1872, Gray (Gray Herb.); Union Pass, Wheeler's Exp., 
1873, Wolf & Rothrock 559 (Gray Herb. and U. S. Nat. Herb.) ; 
Mosquito Pass, Wheeler's Exp., 1873, Wolf & Rothrock 585 
(Gray Herb. and U. S. Nat. Herb.), type of S. Rothrockii; 
spur of Mt. Princeton, Aug., 1880, Brandegee (Mo. Bot. Gard. 
Herb.); alpine slopes above Berthoud's Pass, 22 July, 1881, 
Engelmann (Mo. Bot. Gard. Herb.) ; high mountains, Gray's 
Peak and vicinity, alt. 3350-4260 m., July, 1885, Patterson 80 
(Gray Herb., U. S. Nat. Herb., and Mo. Bot. Gard. Herb.). 
In some of the more reduced alpine forms this species re- 
sembles very closely S. Purshianus, but usually S. Harbourü 
is readily distinguished from that species by the leafy stem, 
larger heads, and longer involucral braets and ray-flowers. 
120. S. Purshianus Nutt.1 Trans. Am. Phil. Soc. N. S. 7: 
412. ра in а as to де: of Rocky Mountains; Greene, 
Mountaine (banks of the ne also banks of the Missouri.” It is to be 
pia oor. that то collections are involved. In the Gray Herbarium of 
University there are two specimens, one labelled in Nuttall's hand- 
air “Senecio *Purshi muria integrifolia Ph. non Willd., R. Mts.,’ e 
other “S. purshianus, Nutt! Rky. Mts. & Platte, Nutt!” These two specimens 
are clearly identical and are taken by the writer to be the кіндігі! type of 
Senecio Purshtanus ри. In the Herbarium of the Philadelphia Academy of 
shiana N. u e data originally recorded on the label is “Senecio in 
tegrifolia?, Cineraria Ph. тез Missouri.” As to this handwriting, I am not сег- 
