FLOKA OF THE ISTHilUS OF FAX^VilA. 159 
In their habit liowever they -nrell agree witli a specimcu in my Hcrharium, gathered by Otto in Venezuela, 
and with an authentic specimen gathered by Bcrliiudier in Mexico (no. 2150), which I compared in the 
Eoyal Herbarium at Berlin. Dr. Seemami's plant only differs by the upper leaves being of a somewhat 
larger size, 3 inches long and 6-8 lines broad, their fine and acute serratures being quite the same. All 
three specimens are climbing plants, and almost quite glabrous, with a terminal trichotomous panicle, the 
upper leaves being all entire, even in Bcrlandier's authentic specimen! 
595. Cosmos mlphureus, Cav., De Cancl. Prodr. torn. 5. p. GOG. no. 5. Panama. 
I have compared an authentic specimen, gathered by Andrleux, near Oaxaca (no. 308). It is closely 
allied to Cosmos mM^fl^M*, 11. B.K.,neveri:heless weH distinguished from it by the thrice smallgr scales of 
the exterior involucre, by the twice shorter a^haenia, and by the very deciduous awns of them. 
■ 
596. Zexmenia* Costaricemis, Benth. in Orsted Compositae Ccntro-Amcric. p. 31. no. 128. 
(1853.) Volcano of Cliiriqui, Ycraguas. 
I have not seen authentic specimens gathered by Orated in Costa Eica, but Dr. Seemami's plant from 
Panama agrees weU with Bentham's short description, although the leaves are less scabrous beneath, being 
almost striglUose scabrous above, which are said to be scabrous by a sparse pubescence on both sides. 
Moreover the outermost scales of the involucre are not always acute, the innermost not al^-ays obtuse, as 
stated by Bentham. They are in this respect most variable. Otherwise I have not met with the slightest 
difference between our plant and Bentham's description. The venation of the leaves of this species and 
some others is most singular and somewhat alike as in WuJJia : on each side of the midi-ib towards the base 
of it arise three strong ribs ydth very short intervals, of which the uppermost ones are the strongest, so that 
at first sight the leaves seem to be triple-nerved. 
597. Vereesina ^if/antea, Jacq., Icon. Rax. torn. 1. tab. 175 (ex Dc Cand. in Prodr. tom. 5. 
p. 615. no. 16.)— Frutcx 12-pedalIs. Panama. 
Dr. Seemann'a specimen, the flower-heads of which are however scarcely developed, well agrees T\Ith Da 
Candolle's diagnosis, 1. c, and with the description of Swartz (Flor. Occident, tom. 3. p. 13G8) ; but the leaves 
axe scabrous above, and not " pubescent," as said by De CandoUe, or " rugosiuscula," as stated by Swartz, 11. cc 
Otherwise I find not the slightest difference. The upper leaves are not decurrent, the lower ones very nar- 
rowly. In three flower-heads carefuUy examined by me, 1 found only perfect flowers of the disc, with the 
tube being very hairy; in the fourth I obser^-ed but one single female ligulatc floret besides them. The 
achcenia are gkbrous, but aU immature. I have not seen an original specimen of this plant, and I had also 
not the opportunity of comparing the figure in Jacquin's Icon. Ear. It seems however nearhest aUied to 
the doubtful Bitrichum macrophyUum of Cassini, whose generic character, given by De Candolle m Irodr. 
tom. 5. p. 019, 1 am not enabled to distinguish from Verlcsina, Less. 
598. Spilanthes uliginosa, De Cand. Prodi', tom. 5. p. 624. no. 2o.^Spihnthm vnginom, 
Swartz, Flor. Ind. Occident, tom. 3. p. 1291. On road-sides, about Panama. 
' Dr Seemann's plant has the leaves almost entire, or somewhat repandly toothed. Otherwise it agrees 
weU with De Candolle's diagnosis, and also with Swartz's description, U. ec. ; but the female florets axe not 
bilabiate, as stated by Swartz (perhaps by a mistake). The ach^nia of them axe triquetrous and tnanstulate 
as in Sp. tenella, H. B. K., which however, as well as Sp. dehilis of the same author, is noting but a dwarf 
* Asa Gray restored, In his ' Planta. Wrlghtian^,' torn. 1. p 113, the* older genus ^..,..n/. of De la 
Llave and Lexarza, combining with it Lasianth.a, De Cand., and the Mexican species of L.pocl.ta De 
Cand. I adopt this act of ["^tice the more readily, as the latter do not aduut of a connection with the 
species of the Sandwich Islands. 
