160 BOTANY. 



gated, naked, and terminated by a single head l£-2" in diameter; involucre 

 with scales in about four series, all distinctly nerved, the outer ovate, obtuse, 

 the inner lanceolate, acute ; ligules persistent (fading away into a pale 

 sulphur color), 2-3-toothed at the apex ; achenium (ray) 3-angled, rounded, 

 and papillose on the outer side ; disk -flowers narrowly tubular ; achenia 

 4-angled; chaff hardly as long as the flower. — Chiricahua Agency, Southern 

 Arizona (536). My specimens are apparently much larger-flowered than 

 those of Mr. Wright, on which the species was founded. They came, 

 however, from near his locality. 



Gymnolomia * multiflora, Benth. & Hook. (Heliomeris midtiflora, 

 Nutt.) — A very variable plant. Nevada, Arizona, Utah, Colorado (779, 

 551). See vol. v, King's Report, p. 170. 



Rudbeckia laciniata, L. — (171 of Loew.) Sangre de Cristo Pass, 

 Colorado. 



Rudbeckia columnaris, Pursh, var. pulcherrima. {Lepachys columnaris, 

 T. & G., /?. pulcherrima, Don.) — Erect, simple, or branching from the base, 

 strigose-pubescent ; earliest leaves lanceolate and entire ; stem-leaves pin- 

 nately parted, with linear divisions, petioled ; upper ones similar, but sessile ; 

 disk columnar, 9-15" long and 4" wide; ray-flowers dark purple, reflexed, 6" 

 long and 4" wide. — Zufii Village (159), and also collected by Dr. Oscar 

 Loew in White Mountains of Arizona. 



Var. Tagetes. {Lepachys columnaris, var. Tagetcs, Gray, PI. Wright. 1, 

 p. 106.) — Similar to the above except in having small yellow or brown rays 

 and a shorter disk. Arkansas Valley, Colorado (24, Loew) ; Valley of the 

 Rio Grande, above Albuquerque (85). 



Rudbeckia hirta, L. (apparently). — Trout Creek, Colorado (549, 550). 



Rudbeckia occidentalis, Nutt. — Utah. 



Balsamorhiza sagittata, Nutt, — Northern Nevada and Utah. 



* Gymnolomia, II. B. et K. — Heads beterogaraous, radiate ; rays 1-seried, neutral ; disk-flowers per- 

 fect, fertile. Involucre hemispherical or broadly campanulate; bracts in 2-3 series, exterior herbaceous and 

 a little shorter, interior thinner, all narrow, or rarely with the exterior or interior enlarged. Receptacle 

 convex or conical ; chaff concave and embracing the disk-flowers. Ray-flowers ligulate, spreading, 

 entire or dentate. Disk-flowers regular; tube short or with a somewhat dilated base. Anthers entire 

 at base or with two small auricles. Styles of the disk-flowers obtuse or sometimes terminated by 

 a short, acute appendage. Achenia of the ray-flowers narrow, empty; of disk-flowers sub-compressed, 

 4-angled, obtuse at apex (in our species destitute of pappus).— Erect, branching herbs. — Benth. Sc 

 Hook. 



