Order I. RANUNCULACE7E. Jass. 



Sepals 3-6 or more, but usually 5, distinct, hypogynous, mostly 

 deciduous: aestivation (except in Clematis) imbricated. Petals 2~l'-\, 

 hypogynous, sometimes deformed, occasionally absent. Stamens in- 

 definite in number, hypogynous, distinct : anthers adnate or innate. 

 Ovaries seated on the torus, numerous, sometimes few or solitary, dis- 

 tinct : ovules solitary or several. Carpels either dry achenia, or 

 baccate, or follicular. Seeds anatropous, solitary or several. Embryo 

 minute, near the base of horny or fleshy (and often more or less oily) 

 albumen. — Herbs (rarely shrubby), with acrid transparent juice. 

 Leaves alternate (opposite in Clematis) variously divided : petioles 

 generally dilated at the base and partly clasping the stem. 



Tribe I. ANEMONES. 



Clematidese and Anemoneae, DC. 



Petals plane or none. Anthers mostly extrorse. Achenia numer- 

 ous, caudate or subulate with the style. Seed suspended. 



■ I. CLEMATIS. Linn.; DC. syst. 1. p. 31. 



Involucre none, or resembling a calyx, and situated next to the flower. 

 Sepals 4 (4-8), colored, in aestivation valvate or with the edges bent in- 

 wards. Petals none, or shorter than the sepals. Anthers linear, extrorse. 

 Achenia terminated by long (mostly plumose or hairy) tails. — Perennial 

 herbaceous or somewhat shrubby plants, mostly sannentose, with opposite 

 leaves and fibrous roots. 



§ 1. Involucre none: petals none. — Clematis proper. 

 * Stevi herbaceous, erect. 



1. C. ochroleuca (Ait.) : stem simple, silky-pubescent; leaves undi- 

 vided, ovate, entire, silky beneath ; flower solitary, terminal, pedunculate, in- 

 clined. — Ait. Kew. (ed. 1.) 1. p. 260; Sims, hot. mag. t. 1175; Ell. sk. 2. 

 p. 45; DC. prodr. 1. p. 8. C. sericea, Michx. ! fi. 1. p. 319; Pursh,Jl. 2. 

 p. 385. 



0. leaves broadly ovate, very tomentose. 



