34 CROWFOOT FAMILr. 



§ 2. Sepals imbricated in the bud. Not cUrnUng, nor woody except in 8 and one of 20. 



» Pistils and akenes several or many in a head, 1-seeded. 



■h- Petals none: sepals petal-like. 



2. HEPATICA. Involucre close to the flower, exactly imitating a S-leaved calyx. 



Sepals 6 or more, oblong, resembling petals. Pistils 12-20. Stemless low 

 perennials, with ronnded 3-lobed leaves and 1-flowered scapes. 



3. ANKMONE. Involucre of 2 or more opposite or whorled green leaves much 



below the flower. Sepals 4-20. Pistils very many in a close head (or fewer 

 in one species), forming pointed or tailed akenes. 



4. THALlCTIiUM. Involucre none, and stem-leaves all alternate, except in one 



species intermediate between this genus and Anemone. SepaU 4 or more. 

 Pistils 4-15, forming several-angled or grooved akenes. Perennials, with 

 smiiU flowers in panicles or umbels, most of them dioecious, and with 

 ternately compound or decompound leaves. 

 1- *- Petals and sepals both conspicuous, 5 or more. Akenes naked, short-pointed. 

 6. ADONIS. Petals and sepals naked, no pit or appendage at the base. Akenes 

 in a head or short spike. 



6. MYOSORUS. Sepals with a spur at the base underneath. Petals on a slender 



claw, which is hollow at its apex. Akenes in a long tail-shaped spike. 



7. EANUNCULDS. Sepals naked. Petals with a little pit or a scale ou the short 



claw. Akenes in a head. 



« * Pistils several, 2-amled, becoming 1-2-seededpods or berries. 



8. ZANTHORHIZA. Sepals 5, deciduous after flowering. Petals 5, small, 



2-lobed, on a claw. Stamens 5-10. Little pods 1-seeded. Undershrub, 

 with yellow wood and roots. 



9. HYDEASTIS. Sepals 3, falling when the flower opens. Petals none. Fruit 



ben-y-like. Low perennial. 



« * « Pistils several, few, or one, forming several-seeded pods or rarely berries. 

 ^- Sepals (4 or &) falling when the flower opens, petal-like. Petals minute, and with 

 claws, or nime. Stamens numerous, white. Leaves ternately decompound. 



10. ACT.SA. Pistil only one, becoming a berry. Flowers in a short and thick 



raceme or cluster. 



11. CIMICIFUGA. Pistils 1-8, becoming pods in frait. Flowers in long racemes. 



^- ^- Sepals not falling when the flower opens, in 15 and 20 persistent even till die 

 fruit matures, in all the others petal-like and deciduous. 



++ Petals none at all; flowers regular. 



12. CALTHA. Sepals 6-9. Pods several. Leaves simple and undivided, rounded. 

 *H. +4. Petals 5 or more inconspicuous nectar-bearing bodies, very much smaller than 



the sepals : flmoer regular. 



13. TROLLIUS. Sepals 5 -many. Petals with a little hollow near the base. 



Pods sessile. Leaves palraately parted and lobed. 



14. COPTIS. Sepals 5-7. Petals" club-shaped and tubular at the top. Pods 



r.iised on slender stalks! Leaves with 3 leaflets. 



15. HELLEBORUS. Sepals 5, persistent, enlarging and turning green after flow- 



erins;! Petals hollow and 2-lipped. Leaves palmatelv or pedately divided. 



16. NIGELLA. Sepals 5. Petals 2-lobed. Pods 3-5 or more united" below into 



one ! Annuals, with finely dissected leaves. 

 4H. *+ ++ Petals large hollow spurs projecting between die sepals : flower regular. 



17. AQUILEGIA. Sepals 5. Pistils about 5, with slender stvles. and forming 



narrow pods. Perennials, with ternately compound or decompound leaves. 

 *+ ++ «. 1-f Petals 2 or i, much smaller than the 5 unequal sepals : i. e. the fhnoer 

 irregular and unsymmetrical. Leaves palmately lobed or parted. Pods 1-5. 



18. DELPHINIUM. Upper sepal spurred; the spur enclosing the spurs of the 



upper pair of petals: lower pair of petals spurless or wanting. 



19. ACONITUM. Upper sepals in the form of a hood or helmet, coverine the two 



very long-clawed and peculiar little petals. 



20. 



■ Petals large and flat, of ordinary shape. Sepals herbaceous and 



persistent ! Flowers large, regular. 



P.«;ONIA. A fleshy disk surrounds the base of the 2 or more pistils which 



form leathery pods in fruit. Seeds large, rather fleshy-coated. Perennials 



with compound or decompound leaves : one species shrubby. ' 



