Flora of the Palousc Region 75 



Carpels several-ovuled: fruit a follicle or berry. 

 Flowers regular. 



Low herbs with solitary or umbelled flowers. 113. coptis. 

 Tall erect herbs with racemose flowers. 114. actak.a. 



Flowers irregular. 



Posterior sepals spurred. 115. dkIvPHINH'm. 



Posterior sepals hooded, helmet-like. 116. aconitum. 



Carpels i-ovuled: fruit an akene. 



Flowers subtended by involucres remote from the calyx. 



117. ANEMONE. 

 Flowers not subtended by involucres. 



Leaves opposite. 11S. clematis. 



Leaves usually both basal and cauline: sepals spurless. 

 Petals none. 



Leaves palmately-lobed. 120. Tral'TVETTERIA. 



Leaves ternately decompound. 122. Thauctrum. 



Petals present. 121. ranunculus. 



113. COPTIS. 



Low glabrous perennials with slender rootstocks: leaves all rad- 

 ical, ternately divided or compound: flowers on scapes, solitan' or 

 in few-flowered umbels: sepals 57, petal-like: petals 5-6, small, 

 linear, hood-shaped: stamens numerous: pistils 3-7, on slender 

 stalks, in fruit forming a cluster of divergent follicles. 



C. OCCideiltalis T. & G. Scapes 2-3-flowered, 10-25 cm. tall: leaves tri- 

 foliate, evergreen; leaflets long-petioled, suborbicular, deeply 3-lobed, the 

 lobes obtuse, dentate, or again lobed: sepals linear, 3-nerved, white, 1 cm. 

 long: petals 5-6 mm. long, short-clawed at the base, broadened at the nec- 

 tary, attenuate beyond, obtuse: stamens about 12, shorter than the carpels: 

 mature carpels 3.5 cm. long, the fruiting portion spreading, longer than the 

 erect stipe. In woods, Thatuna Hills. 



114. ACTAKA. 



Erect perennial herbs: leaves large. 2-3-ternately compound: 

 flowers small, white, in a terminal raceme: sepals 3-5, petal-like: 

 petals 4-10, small, spatulate or narrow-clawed: stamens numerous: 

 ovary i-many-ovuled. in fruit forming a large somewhat poison- 

 ous berry. 



A. spicata var. arguta Torr. .Stems 30-60 cm. tall, erect: leaves triter- 

 nately decompound; leaflets obliquely ovate or lanceolate, acuminate, 

 coarsely incised-serrate or lobed, puberulent when young, 3-6 cm. long: 

 racemes densely flowered, 2-3 cm. long, becoming loose in age: berries bright 

 red, rarely white. 



115. DELPHINIUM. 



Annual or perennial erect branching herbs: leaves palmately- 

 lobed or divided: flowers showy, in a raceme or panicle: sepals 5, 

 petal-like, the upper one prolonged into a spur: petals 4, some- 

 times 2; the two posterior ones spurred; the lateral, when present, 



