WESTERN TROPICAL AMERICA. 121 
terminales, laxe 3-6-cephali. Pedunculi 1-1}-pollicares, bracteolis setaceis onusti. Involucra 4 lin, longa, 
squamis linearibus acuminatissimis dorso scabro-puberulis, exterioribus seepius numerosis setaceis, Ligule circa 
15, vix 3 lin. longe. Styli rami appendice acutissima superati. Achenia compressiuscula, preesertim ad 
margines puberulo-hirta, apice in discum expansa. 
474, Gynoxys scabra, sp. n., scandens, foliis alternis petiolatis late ovatis acuminatis sub- 
dentatis basi cordatis utrinque cauleque scabro-hirtis, capitulis numerosis multifloris in paniculas 
axillares ovatas confertis, involucri campanulati squamis circa 15, accessoriis perpaucis. — 
Guayaquil. 
Rami tenuiter striati. Folia 2-3 poll. longa, 13-2 poll. lata, subbuilata, utrinque presertim in pagina 
inferiore scabra, margine irregulariter plus minus denticulata. Panicule dense vix folio longiores. Capitula 
magnitudine G, cordifoliw vel paullo minora, pedicellis brevissimis. Involucri squame 3 lin, longe, dorso 
scabree, apice uncinato-acuminatze, disco paullo breviores. Ligulee 12-15, 3 lin. longee. Styli rami appendice 
acutissima superati. Ovaria glabriuscula, apice in discum expansa. Acheenia non vidi. 
475. Cacauta cirsiifolia, Hook. et Arn. Bot. Beech. p.436. (sp.n.)—Acheenia angulata, pubes- 
centia.—Tepic. 
476. Cirsium cernuum, Lag. ?—DC. Prod. v. 6. p. 639.—Hook. et Arn. Bot. Beech. p. 437.— 
The external scales are ciliate with prickles, not entire as they are described by De Candolle, and 
as they really appear to be in Vera Cruz specimens. It was upon this ground chiefly that I 
formerly considered the present plant as a distinct species which I described as C. heterolepis, 
(Pl. Hartw. p. 87); but I doubt much whether it be not a mere variety of C. cernuum.—Tepic. 
477. Lycosrris (Diazeuxis) latifolia, (Diazeuxis latifolia, Don.—DC. Prod. v. 7. p. 22.— 
Less. Syn. Comp. p. 97) ramis striatis arachnoideo-lanatis mox glabratis, foliis late lanceolatis 
triplinervibus supra glabris subtus niveo-lanatis, involucris glabris vel vix arachnoideo-lanatis, squamis 
appressis vel exterioribus vix patentibus acutis, pappi setis 20-30.—Realejo, Isle of Taboga, Bay 
of Panama; gathered also by Cuming, near Panama (n. 1161). 
The plants retained by De Candolle and Lessing in Lycoseris, are now ascer- 
tained to be usually, if not always, dicecious ; there remains therefore no character 
to distinguish Diazeuxis but the venation of the leaves, the habit being the same 
in both, and they should therefore only be considered as sections. The flower- 
heads in this the most common species are considerably larger than in the two 
following. | 
478. Lycosrris (Diazeuxis) bracteata, sp. n., ramis striatis arachnoideo-lanatis mox glabratis, 
foliis lato-lanceolatis tri-quintuplinervibus supra glabris subtus niveo-tomentosis, involucris lanatis, 
squamis appressis lanceolatis longe acuminatis, pappo 10-15-seto.— Guayaquil. 
Habitus et folia Z. latifoliw. Capitula (mascula) minora, radio incluso pollicem diametro, bractea foliacea 
sepissime suffulta. Involucri squame: angustiores, longius acuminate, exteriores radium brevem subeequantes. 
Corolle L. latifolia. Pappi paleze setiformes, parum ineequales, majores leviter complanate, oomind serrulato- 
hirte, apice acute non penicillate. Capitula foeminea non visa. 
479. Lycoseris (Diazeuxis) sguarrosa, sp. 0., ramis striatis subnudis, foliis’ lato-lanceolatis, 
3-5-plinervibus supra glabris subtus tenuiter albo-lanatis viridibusque, involucris glabris squamis 
se § 
