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FLORA OF THE ISTmiUS OF PANAMA. 163 
theris cxsertis hand imputatis), tuho gracilis dimidiam corollam xqxiaute, /(2!/ce paullo ampliata, apice 
profunde 5-dcutata, dentibus rcvolutis, obtusiusctdis. Filamenta faucis basi iuserta, longiuscule libera, 
plana^ infra iiisertiouera cum antbera teretia. Ant/tera sub authesi cum ipsis filamcntorum apicibus 
totae exsertae, basi ccaudatEC^ supra connectivum in appcndiculam liberam, cucrvcmj obtusamj aiigustc 
linearcm productaj. Polliids granula globosa, undique ecbiuulata. Ovarium omnino ut in floribus 
fosmineis. Stylus basi valde incrassatus, glaber, pauilo supra tubum staraineum cmincns, ibique 
bifidus; rami stigmatis utrinque revoluti, adplanati, truncati, apiceque solo papillosi. Achtsnia 
(submatura) couformia^ teretia^ glabcrrima, levissime striata, nigrescentia, callo basilari pallido insi- 
dentia, pappo multisetoso coronata, setis iniequalibus, albissimis, rigidulia, Icviter serrulatis, ))asi 
libcris, florcs licrmaphroditos fere scquaiitibus. 
A remarkable species. At first I thought it might be Senecio hamamelifolius, 1T."B.K. (Not. Gen. et 
Sp. torn. 4. p. 179. no. 13) ; but this is said to be an herbaceous plant, with the leaves obtusc-anglcd, and 
the disc-florets mucli larger, etc. On the otlicr hand it seemed to be the Senecio grandlfoVuis, Leasing 
(Limia!a, torn. 5 (1830). p. 1G2. no. 3G2), a species which has been overlooked by De CandoUe in his Pro- 
dromus, and Dr. Seemann's plant seems closely allied to it, but Lessing's plant is said to have an involucre 
of five scales, and eleven-flowered capitula, and leaves which are stated to be " irregularitcr inciso-dcntata," 
whilst Dr. Seemann's plant has the leaves deeply cut nearly to the middle of the limb, into largo, acute, and 
almost regular lobcSj so that they resemble those of some North An\erican Oaks. Authentic specimens 
however I have seen neither of Humboldt's nor of Lessing's plant, gathered by Schiede at Jalapa. 
Plate XXXI. Pig. 1, an entire capitulum ; 2, flower of the disc; 3, stigma of the disc-flower; 4, 
flower of the radius ; 5, stamen; 6, stigma of the radius-flower ; 7, pappus hair : — all onagnijled. 
Tribus V. Mutisiace^. 
CIO. Lycoseris latifoUa, Bcntli. — Diazeuxis latlfoUaj Don, De Cand. Prodr. torn. 7. p. 22. no. 1. 
Common about Panama. 
The specimens gathered by Dr. Seemami are all male ones ; their involucres are very woolly, and their 
pappus has sometimes few bristles ; but this character is very inconstant, the number of bristles varying 
sometimes from ten to thirty in the same flower-head. Otherwise the specimens agree well with others 
gathered at Caracas by Moritz. The CentrocUnUim aUissimum, Pceppig et Eudlicher, Nov. Gen. et Sp. 
tom. 3. p. 52. tab. 259, belongs to this genus, and not to Centroclinium, Don, which is well distinguished by 
the aculeate receptacle, and by a very difi*ercut habit. It is nearly alhed to our species, but seems to difler 
in the want of the wool in the involucre, and the very short ligulate florets ; the authentic specimen of it I 
have seen is a female one. 
611. Leria nutans, De Cand. Prodr. tom. 7. p. 42. no. 1. In savanas about Panama. 
Tribus VI. Nassauviace^e. 
612. Trixis frutescens, P. Browne, De Cand. Prodr. tom. 7. p. 68. no. 12.— Nomen vernacul 
"Chiriqui." On the outslcirts of wood, western parts of Panama. 
(t 
Tribus VII. Cichorace.^. 
613. Lactuca sativa, Linn., De Cand. Prodr. tom. 7. p. 138. no. 41.— Nomen vernacul 
Lechnga," Cidtivatcd in gardens, but does not succeed well. 
