ORDER I. RANUNCULACE^E. 201 



6. Leaves palmately lobed Trautvetteria, 14 



Leaves not palmately lobed Ranunculus, 5 



7. Leaves tripinnate Adonis, 4 



Leaves 3-lobed Hepatica, 3 



Leaves simple, dissected, lobed 8 



8. Achenia in an elongated spike Jfyosurus, 6 



Achenia in a compact head Ranunculus, 5 



Achenia with plumose tails Clematis, 1 



9. Petals none. Perianth petal-like 10 



Petals present 12 



10. Sepals 3, petaloid Hydrastis, 17 



Sepals more than 3 11 



11. Flowers yellow. Leaves simple Caltha, 1 



Flowers white. Leaves compound Isopyrum, S 



12. Stem woody Zanlfwrhiza, 16 



Stem herbaceous 13 



13. Flowers regular 14 



Flowers more or less irregular 15 



14. Pistil 1. forming a several-seeded berry Actcea. 12 



Pistils 1 — 8, forming a several-seeded pod Cimicifuga, 13 



15. Petals 5, spurred, tubular Aquilegia, 9 



Petals 4, of two forms Delphinium, 10 



Petals 2, concealed under the hood of the sepal Aconitum, 11 



Genus I.— CLEM' ATIS. L. 12— 12. {Virgin's Bower) 



(From the Greek klema, a shoot or tendril, in allusion to the climbing habit of the 



genus.) 



Sepals and Petals confounded. Perianth 4 — 10- leaved, col- 

 ored. Anthers linear, extrorse. Fruit an achenium, usually 

 with long plumose tails. 



a. Flowers paniculate. Leaves ternately or alternately divided. 



1. C. Virginia'na, (L.) Climbing, covering small trees and bushes 

 with its foliage. Ste?n terete, pubescent when young. Leaves ternate, 

 leaflets cordate-ovate, acute, coarsely toothed, or lobed ; veins and 

 margins pubescent. Flowers panicled, dioecious. Sepals 4, oval, pubes- 

 cent, fragrant. Carpels with long plumose tails. — White. ^ . Aug. 

 Can. to Flor. Fertile soil. 



2. C. Catksbya'na, (Pursh.) Stem climbing, pubescent, similar to the 

 preceding species. Leaves ternate ; leaflets subcordate, 3-lobed, lobes 

 entire, acuminate. Panicle divaricate, dichotomous. Flowers small, 

 the pistillate florets bearing abortive stamens. Sepals 4, oblong, downy 

 on the outer surface. — White. ^ . July to Aug. So. Ca. and Geo. 



3. C. holoser'icea, (Pursh.) Climbing, the whole plant silky. Flow- 

 ers dioecious in paniculate corymbs, trichotomous, few-flowered. Leaves 

 ternate, pubescent on both sides; leaflets oblong-lanceolate, entire. Se- 

 pals linear. Tails of the carpels long, feathered. — White. *> . July 

 to Aug. Geo. 



b. Peduncles solitary, \-jlowered. Leaves pinnately divided. 



4. C. cylin'drica, (Pursh.) Climbing, pubescent. Leaves pinnate, 

 membranaceous, decompound; leaflets ovate, acute at each end, gla- 

 brous, petiolate. Peduncles 1-flowered, terminal, solitary. Flowers 

 cylindrical, nodding. Sepals coriaceous, acuminate, margin undulate. 

 Tails of the seed plumose. 



9* 



