LOASACEAE. 235 



Leaves sinuately dentate or crenate ; the lower oblanceolate-spatu- 



late ; the upper ovate-lanceolate. 5. T. integra. 



Leaves mostly pinnately lobed; lobes of the leaves narrow, linear 

 or lanceolate. 6. T. densa. 



Tall, usually 4 dm. or more high ; leaves often i dm. long. 



Leaves divided to near the base into linear-oblong or lanceolate 



narrow lobes. • 7. T. laciniata. 



Leaves sinuate or lobed half-way to the midrib or less ; lobes triangu- 

 lar or ovate or broader. 

 Plant erect ; leaves tapering at the base, acutely lobed. 



8. T. speciosa. 

 Plant ascending or decumbent ; leaves sinuately round-lobed, at 



least the upper cuneate or rounded at the base. 



9. T. sinuata. 

 Petals straw-color. 



Outer filaments dilated ; petals 2-3 cm. long. 



Petals about 2 cm. long ; upper leaves with broad bases, long-acuminate. 



10. T. Rusbyi. 

 Petals about 3 cm. long ; none of the leaves broad at the base. 



Plant branched below ; flowers subtended by single entire bracts. 



11. T. nuda. 

 Plants simple below ; flowers subtended by several toothed bracts. 



12. T. striata. 

 Filaments all filiform; petals 4-3 cm. long. 13. T. decapetala. 



J. Touterea multicaulis Osterhout. On plains of Colo. — Wolcott, Eagle Co. 



2. Touteiea multiflora (Nutt.) Rydb. (Mentzelia multi-flora A. Gray) On 

 dry plains from Colo, to Tex. and Ariz. ; also Mex. — Alt. 7000-gooo ft. — 

 Salida; Platte Cafion; Pine Grove; Artist Glen; Palmer Lake; Grayback 

 mining camp and Placer Gulch. 



3. Touterea lutea (Greene) Rydb. (^Mentzelia lutea Greene) In dry soil 

 in Colo. — Cafion City. 



4. Touterea chrysantha (Engelm.) Rydb. (M. chrysantha Engelm.) On 

 hills, mesas and cations from Colo, and Utah to Ariz.- — Cafion City. 



5. Touterea integra (Jones) Rydb. {Mentzelia multiflora integra Jones) 

 In arid soil of southern Utah and southwestern Colo. — Mesa across Gunni- 

 son from Grand Junction. 



6. Touterea densa (Greene) Rydb. {M. densa Greene) In gulches and 

 caiions and on dry table-land of Colo, and N. M. — Alt. 7000-9000 ft. — Canon 

 City; Salida;. Gunnison; gulch west of Palmer Lake; Smith's Fork Canon, 

 Delta Co. ; Hotchkiss. 



7. Touterea laciniata Rydb. On plains and in caiions of Colo. — Alt. 5000- 

 7000 ft. — Durango; Pagosa Springs; Cafion City; Antonito. 



8. Touterea speciosa Osterh. {M.entzelia speciosa Osterh.) On hills and 

 in dry valleys from Wyo. to Colo. — Alt. 5000-10,000 ft. — Estes Park, Larimer 

 Co. ; west of Loveland, Larimer Co. ; Veta Pass ; Idaho Springs ; near 

 Boulder; near Badito, between La Veta and Gardner; Turkey Creek and 

 tributaries; Ute Pass; Dillon Caiion; Livermore; Arthur's Rock; Dixon 

 Cafion; between Sunshine and Ward; Ft. Collins. 



9. Touterea sinuata Rydb. In cations of Colorado. — Boulder. 



10. Touterea Rusbyi (Wooton) Rydb. {Mentzelia Rusbyi Wooton) On 

 plains and in valleys from Wyo. to N. M. and Ariz.— Alt. 5000-7000 ft.— 

 Wolcott ; Glenwood Springs ; Durango ; Black Caiion ; between Porter and 

 Durango; Salida Caiion. 



