138 



I. RANUNCULACE^E. 



CLEMATIS. 



f Sepals 

 I equal. . 



I Sepals 

 follicular. [unequal, 



I" Pet. small. 

 \ Petals 0. 



PIG. 39 1. Ranunculus bulbosus. 2. A petal with the nectariferous scale. 3. A carpel with its beak. 

 4. Vertical section, showing the erect ovule. 5. Aquilegia Canadensis. 6. Torus, with the stamens and 

 pistils, and a petal attached. 7. Follicle. 8. Seed. 9. Its vertical section, showing the funiculus and 

 minute embryo. 10. Cross section of the flower, showing the arrangement of the 5 ovaries, the 20 

 stamens in 4 series, &c. 



Conspectus of the Genera. 



( Pet. Mipped. Trollius. 7 



Flowers ( cauline. \ Pet. 2-lipped. Helleborus. 8 



solitary, f radical. . . . Copt is 9 



(white. . Cimicifuga. 15 



Flowers racemose, \ dark purple. Zanthorhiza. 19 



Calyx white. .... Isopyrum. 10 



Calyx bright yellow. . . . Caltha. 6 



(plane, 3-lobed. . . Nigella. 22 



. I Petals conspicuous, ( all spurred behind. . Aquilegia. 11 



( upper one large, vaulted. . . Aconitum. 13 



(colored, .. (upper one spurred behind. . . Delphinium. 12 



. (green and foliaceous. Petals plane. . . Pcconia. 21 



( palmate. . Trautvetteria. 16 



(Leaves alternate, if 2 3-ternate. Thalictrum, 17 



(Invol. 0. . .( Leaves opposite. Mostly climbers.. Clematis. l 



(Petals 0, or < Involucre calyx-like, near the flower. . . Hepatica. 3 



inconspicu. ( Involucre leaf-like, remote from flower. . . Anemone. 2 



( with no nectary, scarlet. . . Adonis. 4 



\ with nectariferous, tubular claws. Myosiirus. 18 



Petals conspicuous, . . . f with a nectariferous scale at base. Ranunculus. 5 



( solitary, many-seeded. Flowers racemose Actcca. 14 



Carpels baccate, (numerous, 12-seeded. Flowers solitary Hydrastis. 20 



1. CLEMATIS. 



Gr. K\rjfjia, a tendril ; climbing by tendrils, or twining petioles instead. 



Calyx 4-(rarely 5, 6 or 8-) sepaled, colored, pubescent; corolla 0, 

 or smaller than the calyx ; filaments 00, shorter than the sepals ; 

 ovaries 4 20 ; styles longer than the stamens ; achenia caudate with 

 the long, plumose, permanent style. % Mostly climbing. Leaves 

 mostly compound and opposite. 



