508 
Radical leaves narrow, oblanceolate, more or less revolute, finely silvery on both 
sides; flowering stem slender, bearing smaller heads with brightly rose-colored bracts. 
The plant is more diffusely spreading. Prairie: Rochford, altitude 1,600 m., July 12 
(No. 791). 
Antennaria plantaginifolia (L.) Richards. Bot. App. ed. 2, 80 (1828) ; Gnaphalium 
plantaginifolium L, Sp. Pl. ii, 850 (1753). 
This species is very variable, at least if all the western forms belong to it. The 
typical form with large, thin, 3-ribbed leaves was not met with. What I take for 
an alpine form of this species was collected early in the spring, around Custer, alti- 
tude 1,650m., May 30 (No. 794). This is low, 7 to 10 em. high, with smaller heads, 
radical leaves obovate or oblong, about 3 cm, long, glabrous above, white beneath. 
The other two forms collected belong to the western form of 4. plantaginifolia, 
which perhaps is distinct fromthe eastern, The leaves are smaller, 1.5 to 4 em, long, 
silky on both sides, and seldom 3-nerved, In one of the forms the leaves are about 
3 cm, long, the stem more robust and more floccose, Hot Springs, altitude 1,100 m., 
June 13; Hermosa, altitude 1,050 m., June 2; Lead City, altitude 1,700 m., July 4 
(No. 793). The other form is more slender and less floccose, the leaves about one- 
half the size of those of the last. This is the same as No. 173 of my western Nebraska 
collection. Lead City, altitude 1,700 m., July 6 (No, 795). 
Antennaria margaritacea (L.) Hook. Fl, Bor. Amer. i, 329 (1833); Gnaphalium 
margaritaceum L. Sp. Pl.i, 85 (1753), ; 
Englewood, altitude 1,600 m., August 138 (No. 796). 
Iva xanthifolia Nutt. Gen. ii, 185 (1818). 
Waste places, rare: Custer, altitude 1,600 m., August 19 (No, 797), 
Ambrosia psilostachya DC. Prodr. v, 526 (1836). 
Rare: Hot Springs, altitude 1,700 m., August 2 (No. 795). 
YO 
Ambrosia artemisizefolia L. Sp. Pl. ii, 988 (1753). 
Custer, altitude 1,650 m., August 11 (No. 799). 
Brauneria pallida (Nutt.) Britton, Mem. Torr. Club, v, 3383 (1895); Rudbeckia 
pallida Nutt. Journ. Acad. Phila. v, 77 (1834); Echinacea angustifolia DC. Prodr., v, 
554 (1836). 
Prairie: Custer, altitude 1,600 m., August 1 (No. 800). 
Rudbeckia hirta L. Sp. PI. ii, 907 (1753). 
Meadows: Rochford, altitude 1,600 m., July 12; in the Limestone District, altitude 
1,900 m., July 26 (No.801), One specimen was very leafy, with narrow linear- 
lanceolate leaves. 
Lepachys columnaris (Pursh) Torr. & Gr. Fl. ii, 815 (1841); Rudbeckia columnaris 
Pursh, Fl. ii, 575 (1814). 
Rare; Only a few specimens seeured at Custer, altitude 1,650m., August 1 (No. 802). 
Helianthus annuus L. Sp. Pl. ii, 904 (1753). 
Custer, altitude 1,600 m., August 1 (No. 803). 
Helianthus petiolaris Nutt. Journ. Acad. Phila, ii, 115 (1821). 
Only a few specimens were secured; all had some of the leaves opposite. Hot 
Springs, altitude 1,100 m., August 2 (No, 804), 
Helianthus scaberrimus Ell. Bot. S. Car. & Georg. ii, 423 (1824); JL. riygidus Desf. 
Cat. Hort. Paris, ed. 3, 184 (1829). 
Custer, altitude 1,700 m., August 1 (No. 805). 
Helianthus maximiliani Schrad. Ind. Sem. Hort. Goett. (1835). 
Custer, altitude 1,700 m., August 15 (No. 806). 
Helianthella quinquenervis (Hook.) Gray, Proc. Amer. Acad. xix, 10 (1883); JTeli- 
anthus quinquenervis Hook. Lond. Journ. Bot. vi, 247 (1847). 
The leaves in my specimens are as often alternate as opposite, and the plant is 
much taller than the specimens in the National Herbarium, 
