3r^2 POLTANDRIA. POlYGYNlAk 



Stem alternately 2-leaved, leaves palmate; flower soli- 

 tary, terminal. The fruit and habit is that of thehcibace- 

 ous species of Itubus. 



Species. 1. H. canadeims. The only species of the 

 genus. 



587. CALTHA. L. (Marsh Marygold.) 



Calix none. Fetals 5 to 9. JWdarij none. 

 Capsules several, many-seeded. 



Herbaceous; leaves alternate, reniform, cordate, or 

 rarely sagittate; flowers terminal, solitary or several, 

 mostly snbcorymbose and yellow, rarely white. The as- 

 pect of ihe genus similar to chat of Ranunculus. 



Species. 1. C paniassifoUa. Radical leaves upon long' 

 petioles, cordate and very obtuse, witli many nerves; stem 

 l-!eaved, 1-flowered, petals elliptic; styles 5 to 8. Hab.- 

 In New Jersey. Rafinesque in New York. Med. lleposit. 

 II. p. 361. No. 28. in the year 1808. CJcariodes. Ph. 2. 

 p. 389. 2.palustris. 3. fab elU folia. 



Of this small g-enus there are 2 species in Europe 

 including C palusti-is, 1 in Siberia, 1 in Falkland Is- 

 land, and another of doubtful genus at the Straits of 

 Magellan. 



588. COPTIS. Salisbury. (Golden-thread.) 

 Calix none. Petals 5 or 6, caducous. Le- 



panthia (nectarys) 5 or 6, cuculiate. Capsules 

 5 to 8, stipitatc, stellately diverging, and ros- 

 trate, many-seeded. 



Root creeping, fibrous, yellow; leaves radical, temate, 

 sempervirent; scape 1-flowered; flowers white. 



Species. 1. C. trifoUa. {Ilelleborns trifolins.) The only 

 species of the genus indigenous to North America, North- 

 ern Asia and Europe as far as Iceland. 



389. TROLLIUS. Z. (Globe Flower.) 



Calix none. Fetals 5 to 8, deciduous. Le- 

 panthia 5 to 8, linear. Capsules numerous, 

 ovate, sessile, many-seeded. 



Herbaceous; leaves digitate; branchlets about 1-flow- 

 ered, flowers terminal, usually globose, yellow. Resem 

 bling Cult ha. 



