266 ROBINSON. 



far as our present knowledge of the species goes, endemic, being 

 unknown elsewhere. Of these 21 are new to science. 



While some of these species will doubtless be found later in the very 

 similar climatic conditions of adjacent portions of western Venezuela 

 and of Ecuador, the number of local novelties found in recent collec- 

 tions from Colombia is such as to suggest that the proportion of 

 endemism is likely to be increased rather than diminished by further 

 exploration. 



After deducting the endemic members of the genus there remain 40 

 species which occur both in Colombia and in other countries. These 

 fall into several categories, as follows: 



1). A group of 12 common species, of wide north and south dis- 

 tribution in tropical and subtropical America, extending in all instances 

 from Mexico or Central America through Colombia, at least to Vene- 

 zuela or Ecuador, and in most cases to Brazil, Peru, or Bolivia. These 

 are E. lacvigahwi, ivaefoliiim, odorahim, viorifolium, microstcmon, 

 pycnoccphalnm , ritalhac, amygckilinwu, soUdaginoides, macroccphaJum, 

 ncmorosum, and inacwphyUum. Among them, two or three {E. 

 microstemon, ivaefolivm, and perhaps viacrophyllum) are so frequent 

 about roadsides and cultivated grounds as to suggest that they have 

 been more or less diffused as weeds, yet all are probably natural (that 

 is to say native) components in the flora of Colombia. 



2). The following 6 species extend from Colombia merely into 

 Venezuela: E. pcUimn, Moritzianwn, Vargasianwn, ihcacfoliuin, iha- 

 guense, and sfocchadifolhim. 



3). In similar manner 13 species extend from Colombia merely 

 southward into Ecuador along the Cordilleras, some of them reaching 

 Peru or Bolivia: E. Icptocephahivi, snhscandcns, origanoidcs, yiivcum, 

 salicinwn, Stucbclii, pscudoglomcratum, ohscurifolium, fastigiatum, 

 gracile (doubtfully in its smoothish var. cpUohioides), Domhcyanum, 

 azangaroen^c, and pichinchcnse. 



4). Only 5 species of Eupaioriian occurring in Colombia are also 

 found on any of the Greater Antilles, namely: E. ivacfoliuni, odowtitm, 

 7uicru,stcvio7i, haUutacfulhnu, and wacrophyllinii. It will be observed 

 that these are all common species of wide range. All except E. 

 haUotacfoluim (which in these larger islands of the West Indies occurs 

 merely on Haiti) are found also in ]\Iexico and Central America. 



5). A very few species of Colombian Eupatoriunis extend along the 

 region of the "Spanish Main" and are also found on Margarita, 

 Trinidad, or upon some of the Lesser Antilles. These are E. corym- 

 hosuvi, ircsnioldrs (and its var. glabrrsccns), inuhcfoliuvi, and hallotnr- 

 folium. An analogous case is presenteil by E. ccltidifolium, an 



