I'i) I). I'IIAI.N. REVISION OF THE GENUS CHEL1DONIDM. '>7.*> 



leptopodum. That it is no Olaucium is certain from the complète 

 absence of any dissepiment in the capsule. The mosl distinctive cha- 

 racter of this species is its laxly paniculate inflorescence, but this is 

 deprived of anygenericsigmficance by the pecenl discoveryinSzechuen 

 ofa third species of the Dicrœnostigma section which is not only inter- 

 mediate as to locaJity but as to inflorescence and as to ovary, between 

 the other two species while it repeats the habit of both. 



There sccms therefore to be not only ample justification, but an 

 alsolute necessity, for the réduction to Chélidonium of Styhphorum, of 

 Hylomecon, and of Dicranosticjma. 



The plant described by De Candolle as Chélidonium sinensis ' is not 

 at présent identifiable; it cannot well be a Chélidonium. Loureiro's 

 description seems to accord best, among Chinese Papaveraceœ, with 

 that of a Meconopsis of the section Chelidonijolia. 



Chélidonium Tourne/. Flores 2-meri receptaculo conico apice 

 piano; sepala libéra iinbricata decidua; corollœ 2, luteae, petalis utrius- 

 que conforrnibus imbricatis deciduis; stamina tx> hypogyna filamentis 

 liliforniibus vel rnedio parum dilatatis antheris basitixis extrorsuni 

 2-riniosis; gynœcio 2-incro (rarissime 3-4-mero) carpella in germen 

 cylindricum (raro ovatum) coalita, placentis oo-ovulatis nerviformibus, 

 stylis plus minus elongatis prorsus fusis stigmatibus tantum apice 

 discretis cum placentis alternantibus et stigma marginale lobis cum 

 placentis plane altérais sinubusque placentas opponentibus formantia, 

 matura valvis placentas cum stylo persistentes nudantibus usque ad 

 basin dehiscentia; semina nitida raphe cristata, vel minutissime punc- 

 tulata raphe subnuda. 



Herbse rhizomate perenni, succo croceo. Folia radicalia pinnatifida. 

 caulina pauca vel (J, floralia sœpissime subopposita. Flores fasciculati 

 bracteolati, fasciculis pedunculatis vel sessilibus. vel cymosi ebracteolati. 

 cymis simplicibus vel iterum cymosis. 



Species ad 8; 6 sinenses, 1 himalaica, 1 americana: singula tarnen 

 per regiones temperatas utriusque orbis late inquilina. 



§ I. Euchelidonium : Folia radicalia pauca, caulina alterna, 

 floralia 0; caulis cymosim ramosus; flores bracteolati. pedicellis ad 

 apicem pcdunculorum oppositifoliorum fascieulatis : capsula glabra. 



1 Chélidonium majus Loureiro (nee Linnj Flor. Cochiii-Ckin.. 330 (1790). 



