ISTHMUS 
147 
Tlieae varietloa liave a peculiar habit, and at first sight they seemed to me to be different from the 
typical form, of which I have seeu an original specimen gathered hy Berlandier in Mexico. But I have 
seen so many intermediate states, tliat I am unable to find any constant character, ^vh.ch could lead 
me to consider them as different species. A third variety, coUcetcd by Morit. in Merida (Venezuela) 
and by Ehrenberg in Mexico, has the same Inflorescence as our variety capilata, but ydh the leaves almost 
glabrous or somewhat scabrous on both sides, and with the involucral scales very glabrous and br.ght green. 
In all varieties however I found no difference either in the si^e or in the shape of the capitula, involucral 
scales, flowers, and achainia. The number of flowers in each capitulum varies from twenty to thirty. 
561. EuPATORiUM (Subimbricata) lonkeroides, H. B. K. Xov. Gen. ct Sp. torn. 4. p. 116. no. 25. 
-De Cand. Prodi-, torn. 5. p. 160. no. 1G3. Savanas about Panama. 
De Candolle had not seen this species, and therefore he erred in pkcing it into the third section Exim. 
Iricata. It belongs reallv to the second section, Suhimhric<,ta, having the scales of the can,pan„l^ mvo- 
lucre in about three or fo'ur series. Eupatorixm suboltusum, De Cand. Prodr. torn. 5. p. ICl. no. 133, seem, 
to be not different from our plant, which is widely diifused over the Southern Continent of America. 
563 EupAioiuUM (Subimbricata) Bardayanum, Benth., Bot. of Belch. Voyage of the Sulphur, 
p. IlS.-A^nprs. Eep. Bot. Syst. torn. 6. p. 110. no. 11. Xdand of Taboga, Bay of Panama. 
This species is aUied to i:upatoriu,n dodon^afoU.an, De Cand. Prodr. vol. 5. p. IGl. no, 120, of which 1 
have seen original specimens gathered by Po^ppig, and docs not differ except by the much shorter more 
obtuse, and almost sessile leaves, of which the inferior ones are U inch long and H inch broad ; th 
achienia of E. dodon..foUu,n being likewise covered with short bans, and not glabrous as stated by De 
CandoUe, 1. c, and by P<epplg and Endlichcr in Nov. Gen. et Sp. torn. 3. p. 55. no. 6. Having oomp<«d 
a great many specimens of E. dodon.afolium, E. fralcrmm. Do Cand., and E. hmcercdcs, II B K 
I found, on m.e hand, the shape and si.o of the leaves, which are sometimes quite entire, sometunes toothed 
with slight repand caUous teeth, so variable, and, on the other hand, the whole habit and inflorescence 
so constant in aU these species, that I should think, in future they might be considered as mere varieties 
of one most variable spcciea. 
563. EupATOiuuM (Subimbricata) ntalbcB, De Cand. Prodr. torn. 5. p. 163. no. 148. Camj,u. 
locKninm Surinamer^e, Miquel ! Stirp. Surinam, select, p. 182. tab. 53. Savanas about Panama. 
I have not seen an original specimen of this rare species, but Dr. Seemann's specimens agree so well 
with the short diagnosis of De Candolle, wHch exhibits so strictly the chief characters of '1^- -terestmg 
Ind well-marked pknt, with a somewhat divergent habit, that without any doubt they are not different from 
he Man species detected by Lund. I found the not quite mature ach.nia glabrous, as described by 
Be Candorbut furnished on the angles with a few scattered hairs ; but they are certainly pentagonal, and 
z^^X, a. -ed by Miqu^ vr°^^ "TSriS:?:^:; iz^s;::^ 
distinguished by a more ^'^^I'-^^'^l'^^^^^^^^ into the cuneatcly winged petiole, 
sides, and which are rounded at "r^voTucre bf the greater number of flowers (forty-five to fifty) in 
by the fewer and broader scales of the in oluc^e M g ,,,aulose-pilose in Gardner's plant, 
the capitulum, and by the almost glabrous achsnia, wlnoh aie entireij g y 
564 EuPATOKirM (Eximbricata) Aschenborniauu,u. Schauer, in Linn^ea, torn 19 (1847). p. 720. 
„o. Tw^lprAnn. Bot. Syst. ton.. 1. p. 402. no. 27. Volcano of Cbinqui, Veraguas.^ ^ 
