126 



RANUNCULACEAE. 



Vol. II. 



lo. Vioma Scottii (Porter) Rydb. Scott's 

 Leather-flower. Fig. 1953. 



Clematis Scotlii Porter, in Porter & Coulter, FI. Colo. i. 



1874. 

 Clematis Douglasii var. Scottii Coulter, Man. Bot. 



Rocky Mts. 3. 1885. 

 V. Scottii Rydb. Fl. Colo. 141. 1906. 



Somewliat villous when young, nearly glabrous 

 when old, stems erect, simple, or nearly so, or 

 branched from the base, io'-2 tall. Leaves peti- 

 oled, the upper pinnate or bipinnate, 3'-6' long, 

 their segments lanceolate, oblong or ovate, entire 

 or few-toothed, stalked, acuminate or acute at the 

 apex, narrowed at the base, 6"-i8" long ; lower 

 leaves sometimes entire, or pinnately cleft, smaller 

 than the upper ; flowers solitary, terminal or also 

 axillarj', long-peduncled. nodding, nearly i' long, 

 purple; sepals ovate-lanceolate, thick; persistent 

 styles plumose throughout, l' long or more, the 

 plumes brown. 



In dry soil. South Dakota to Nebraska, Colorado and 

 Idaho. May-July. 



28. ATRAGENE L. Sp. PI. 543. 1753. 

 Perennial climbing vines, with opposite petioled compound leaves, and large showy pe- 

 duncled flowers, solitary in the axils, or at the ends of the branches. Sepals very large, 

 spreading, petaloid, mostly membranous and prominently veined. Petals small, spatulate. 

 Stamens very numerous, the outer ones usually 

 with broadened filaments. Styles long, per- 

 sistent, plumose. [Ancient Greek name for 

 some vine.] 



About 5 species, natives of the north temperate 

 zone. In addition to the following, another oc- 

 curs in the Rocky Mountains and one in north- 

 western North America. Type species: Atragcne 

 alpina L. 



I. Atragene americana Sims. Purple 

 Virgin's Bower. Fig. 1954. 



A. americana Sims, Bot. Mag. f /. 887. 1806. 

 Clematis verticillaris DC. Syst. i : 166, 1S18. 



A trailing or partly climbing, somewhat 

 woody, nearly glabrous vine. Leaves tri folio- 

 late ; leaflets thin, ovate, acute, toothed or en- 

 tire, more or less cordate; petioles and petio- 

 lules slender ; flowers purplish blue, 2'-X broad 

 when expanded ; sepals 4, thin and translucent, 

 strongly veined, silky along the margins and 

 the veins; petals spatulate, 6"-9" long; persis- 

 tent styles plumose throughout, about 2' long. 



Rocky wooclands and thickets, Hudson Bay to 

 Manitoba, Connecticut. Virginia and Minnesota. 

 Ascends to 3000 ft. in the Catskills. Mountain- 

 or Whorl-leaved-cleniatis. May-June. 



Family t,2. BERBERIDACEAE T. & C. Fl. X. A. i: 49. 1838. 

 Barberry Family. 



Shrubs or herbs, with alternate or basal, simple or compound leaves, with or 

 without stipules, and solitary or racemed mostly terminal flowers. Sepals and 

 petals generally imbricated in two to several series. Stamens as many as the 

 petals and opposite them, hypogynous. Flowers perfect and pistil one in all our 

 species. Anthers extrorse, opening by valves (except in Podophylluiii). Style 

 short; ovules 2-00, anatropous. Fruit a berry or capsule. 



About 10 genera and 130 species, widely distributed in the north temperate zone, the Andes and 



temperate South America, a few in tropical regions. 



Shrubs ; fruit baccate. 



Leaves unifoliolate, on short l)ranches, in the axils of spines. i. Berberis, 



Leaves pinnate ; no spines. 2. Odostemon. 



Herbs. 



Anthers opening by valves. 



