RANUNCULACEAE. 161 



rather small, on short petioles, or the upper sessile, bearing bulblets in their 

 axils, all laciniately cut into acute lobes; sepals pale blue; hood 12-16 mm. 

 long. 



Near the base of Mount Hood, Oregon, Howell. 



200. AQUILEGIA. Columbine. 



Erect perennials with 2-3-ternately compound leaves; flowers 

 regular, showy, on the ends of the branches; sepals 5, regular, 

 petal-like; petals 5, all alike, each with a short lip and produced 

 backward into a large hollow spur much longer than the calyx; 

 pistils 5, with slender styles; pods erect, many-seeded. 



Flowers scarlet and yellow. A. formosa. 



Flowers wholly yellow. A. flavescens. 



Aquilegia formosa Fisch. Usually sparingly pubescent; stems erect, 

 60-90 cm. high; leaflets broadly cuneate, paler beneath, lobed; flowers nodding, 

 bright scarlet, yellow inside; sepals spreading; spurs nearly straight, about 

 twice as long as their blades. 



Common in moist places and in the mountains up to 2000 m. altitude. 



Aquilegia flavescens Wats. Like A. formosa but flowers wholly yellow. 

 In the mountains, rare. 



201. PAEONIA. Paeony. 



Robust perennial herbs with ternately or pinnately compound 

 leaves and showy flowers; sepals 5, herbaceous, persistent; 

 petals 5-10: stamens numerous, inserted on a fleshy disk; pistils 

 2-5; fruit of 3-5 leathery several-seeded follicles. 



Paeonia brownii Dougl. Whole plant glabrous and glaucous, 20-50 cm. 

 high, at first erect or ascending, in fruit decumbent; leaves thick, once or 

 twice ternately divided or parted, the ultimate segments from narrowly oblong 

 to obovate; sepals green, concave, unequal; petals dull brownish red, thick, 

 scarcely longer than the sepals; follicles usually 5, oblong, smooth, about 3 cm. 

 long; seeds black, shining. 



In the Cascade Mountains at low elevations, principally on the eastern 

 slope; also said to occur on Vancouver Island, but this is doubtful. 



202. CALTHA. 



Smooth succulent perennial marsh herbs with round and 

 heart-shaped or reniform undivided leaves; sepals 5-15, petal- 

 like, regular; petals none; stamens numerous; pistils 5-15, 

 several-ovuled, becoming in fruit several-seeded follicles. 



Flowers yellow; stems decumbent, leafy. C. asarifolia. 

 Flowers white; stems erect, leafless or 1-leaved. 



Leaves reniform-orbicular, broader than long. C. biflora. 



Leaves cordate, longer than broad. C. leptosepala. 



Caltha asarifolia DC. Marsh Marigold. Stems decumbent, usually 

 rooting at the nodes, one or few-flowered; leaves round-reniform; sepals 5-7, 

 bright yellow; follicles sessile. 



In bogs, Alaska to Oregon, along the coast; rare southward. 



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