853 
TRIPTILION cordifolium. 
Heart-leaved Triptilion. 
Betton. 
SYNGENESIA POLYGAMIA EQUALIS. 
Nat. ord. Composir#.—Chenanthophore, Lag.—Wabiatiflore, Dec. 
TRIPTILION. Ruiz et Pavon.—Anthodiwn pentaphyllum; foliolis 
oblongis in tubum adproximatis, sibi invicem adpressis; basi sepius bracteis 
tribus-quinque angustioribus, inzequalibus subimbricatus, persistens. Co- 
yolla uniformis 4-5-flora: flosculi omnes hermaphroditi, fertiles bilabiati; Za- 
pio exteriore liguleformi subovato, tridentato; interiore integro subulato, 
aulo breviore. Antherarum tubus basi decemsetosus. Achenia trigona, par- 
ya. Pappus paleaceus deciduus; paleis longis apice ciliatis, vel ciliato- 
enicillatis. Receptaculum minutum, villosum.——Plante herbacee, vel 
ruticose, parve, foliose. - Flores terminales, subterminalesve, subinde ax- 
illares, subsessiles, sepius fasciculato-2-3-ni, Flosculi labio exteriore purpuro- 
caruleo albo, aut luteo.. Lag, MSS.. Tene lin. 
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7. cordifolium, caule paniculato: foliis sessilibus dentato-spinosis, caulinis 
rameisque cordato-ovatis; floribus terminalibus subterminalibusque sub- 
ternis. : be < Ne 
Planta herbacea, pulchella, dodrantalis, pedalisque, annua, Radix 
ibrosa. Caulis erectus filiformis, teres, ramosissimus, paniculatus, Sflexuo- 
“sus, foliatus, puberulus, rigidulus, fusco-purpurascens. Rami alterni, con- 
similes ; ramuli subsetacet, densius pubescentes. Folia alterna, sessilia, arida, 
scariosa, lete virentia, glabra vel subglabra, trinervata reticulatoque venosa ; 
nervis lateralibus paulo supra basim in marginem tendentibus eumque cir- 
cumambientibus, denticulos 2-4, “spina longa simplici aut bipartita subsetacea 
terminatos utrinque emittentibus, apice spinosa ; caulina rameaque cordato- 
ovata, concaviuscula, 5-7 lineas longa; summa oblonga, basi angustata, ad- 
‘proximata, suboppositaque. Flores (fig. 1. magn. nat.; fig. 2. idem auctus) 
arviinm ramulorum apice, vel et in axillis foliorum superiorum, s 
subinde gemini, brevissime pedicellati, tres lineas circiter longi. Aathodium 
(Involucrum) foliolis quinque .oblongo-lanceolatis, erectis in tubum adpres- 
sis, spinoso-acuminatis, puberulis, duobus interioribus paulo brevioribus, co- 
yolle subequale ; in floribus lateralibus (fig. 3.) bracteis 4-5, lineari-suby- 
latis inequalibus subimbricatum, in flore centrali (fig. 1.) nudum. Corolla 
quinquefiora. Flosculi (fig. 4.—flosculus auctus, fig. 5.) bilabiati: labium 
exterius elliptico-ovatum, apice tridentatum, album, basi sepius lutescente: © 
Jabium interius luteum. Stamina quingue; (fig. 6. multoties aucta s—fig. 7. 
eadem magis aucta, antherarum tubo longitudinaliter fisso.) Filamenta sub- 
ulata, flava, supra basim antherarum (tig. 8.) dorso affixa. Antherarum tu- 
bus subexertus luteus. Stylus subsetaceus, albus, bifidus ; laciniis equalibus 
superne crassioribus, truncatis: (fig. 9. stylus cum stigmatibus valde auctus.) 
Pappi palee tres lineares subspathulate (fig. 10. palea unica aucta), intus 
canaliculate, superne ciliate, ciliis flavicantibus. Lag. MSS. 
e ternt, 
This remarkable genus has been raised, this year, in 
the garden of the Horticultural Society at Chiswick, from 
