145 



N. Ord. RUBIACE.E. 

 Tribe Psychotrieee. 



Genus Cephaelis,* Swartz. B. & H., ii, p. 127. Species about 

 70, all tropical, and chiefly American, but a few in the 

 old world. 



145. Cephaelis Ipecacuanha, f A. Rich., Hist. Nat. Ipec., p. 21 



(1820). 



Ipecacuanha. Poaya (Brazil). 



Syn. C. emetica, Pers. Callicocca Ipecacuanha, Brot. Ipecacuanha 

 officinalis, Arruda. 



Figures. Woodville, t. 274 and vol. 5; Hayne, viii, t. 20; Martius, 

 Mat. Med. Brasil, tt. 1 and 8, cop. in Nees, t. 258 ; Trans. Linn. Soc. 

 Lond., vi, t. 11, cop. in Steph. & Ch., t. 62 ; Berg and Sch., t. 15 c ; 

 Bot. Mag., t. 4063 ; St. Hil., PI. Usuelles des Brasil, t. 6 ; Trans. Boy 

 Soc., Edinb., xxvi, tt. 31, 32. 



Description. A half-shrubby perennial, roots several, spreading 

 horizontally from their origin, at first slender and white, when 

 fully grown about \ inch in diameter, long, scarcely branched, 

 orange-brown, irregularly bent and twisted, covered with a very 

 thick bark which is deeply and closely furrowed transversely along 

 the whole length so as to form narrow rings. Stem more or less 

 rhizomatous and rooting, or decumbent, or erect, not more than 

 18 inches long, woody, rounded, knotted and marked with leaf 

 scars, smooth and grey at the base, quadrangular, pubescent, and 

 green above, simple or slightly branched. Leaves few, somewhat 

 crowded at the upper part of the stem, opposite, shortly stalked, 

 stipules large, united at the base, where are several ovoid glands, 

 persistent, adpressed to the stem, whitish, about as long as the 

 petiole, deeply cut into four subulate lacinise, blade 2 4 inches 

 long or more, oval, acute or blunt at the apex, entire and more or 



* Cephaelis, from Kt0a\7, a head, and \o>, to collect, from the flowers being 

 collected into a capituluin. 



f Ipecacuanha, one of the Indian names for the plant, but applied also to 

 several other plants, e. g. species of lonidium. 



