120 BOTANY OF THE VOYAGE OF THE SULPHUR. 
suborbiculatis striatis glabris vel basi dorso puberulis, adjecta altera exteriore angustiore hirsuta. Receptaculum 
convexum, paleis exterioribus 6-8 late oblongis per paria cum squamis involucri et acheenia radii deciduis, 
interioribus paucis angustioribus. Flores radii 3 vel 4, inter involucri squamas et paleas exteriores arcte inclusi ; 
tubus tenuis hirsutus; ligula exserta, lata, concava, purpurascens, triloba, lobo medio ovato, lateralibus latissimis 
valde obliquis. Flores disci involucro eequilongi, tubo brevi hirtello, fauce elongata, limbo 5-dentato. Stamina 
corollam vix equantia, non nigricantia, basi brevissime sagittata. Stylus inclusus, ramis inappendiculatis, 
Achenia radii subcompressa, pappi squamis cirea 20 achznio brevioribus linearibus lanceolatis vel oblongis 
acuminatis ciliato-laceris. Achzenia disci obscure angulata, basi attenuata, nigra, pilis paucis brevibus hirtella ; 
_ pappus illo radii similis, sed e squamellis latioribus constans. 
The genus Vargasia, DC., with all the habit of the common Gadinsoga, only 
differs in the pappus of the ray being reduced to smaller and narrower scales than 
those of the disk, a distinction so slight as scarcely to warrant the separation, the 
more so as there is much doubt whether the original Vargasia caracasana, DC., 
is not a mere variety of the common Galinsoga parviflora. The plant now de- 
scribed is certainly distinct as to species, and if the supposed generic character 
be retained as sectional, it would belong to Vargasia, but as in G. parviflora the 
breadth of the scales of the pappus is variable. Both sections are remarkable 
from each achznium of the ray being inclosed between the subtending scale of 
the involucre, and the two palex of the receptacle next above it, which form a 
kind of envelope, falling off with the achznium at its maturity. 
468. Trax procumbens, Linn.—DC. Prod. v. 5. p. 679.—Gulf of Fonseca. 
469, Caxza prunifolio, Humb. et Kunth.—DC. Prod. v. 5. p. 672.—Guayaquil. 
470. Gnapuatium Iuteo-album, Linn.—DC. Prod. v. 6. p. 230.—Mexican coast. 
471. Nevrotana lobata, Br.—DC. Prod. v. 6. p- 292.—Various places along the Columbian 
coast. 
472. Gynoxis Henkei, DC. Prod. v. 6. p. 326.—Panama to Guayaquil. 
This plant varies much in pubescence and in the number of flower-heads, some 
branches of the same specimen being, as well as the leaves, quite smooth, whilst 
others are more or less downy. The flower-heads are arranged from two to six or 
eight in axillary or terminal corymbs, they are always much larger than those of: 
G. cordifolia, and the teeth of the leaves are much smaller. It is probable that 
G. Berlandieri is a mere form of the same species. 
47 3. Gynoxis Sinclairi, sp. n., suffruticosa, scandens, foliis alternis breviter petiolatis lato- 
ovatis acutis dentatis basi subcordatis, supra scabrellis, subtus cauleque pubescenti-hirtis, capitulis 
8-6 multifloris, Mnyolucri squamis interioribus circa 20 discum equantibus, exterioribus plurimis 
filiformibus.—Columbia. 
Rami angulato-striati pube rufescente demum fere evanida. Folia ramorum primarium 2-3 poll. longa, 
2 poll. lata, seepius grosse dentata, basi auriculis latis rotundatis cordata, supra subbullata, subtus reticulata, 
pube rufescente ; ramulorum floralium minora, angustiora, denticulata, basi-rotundata. Corymbi axillares vel 
