853 
TRIPTILION cordifolium. 
Heart-leaved Triptilion. 
—e— 
SYNGENESIA POLYGAMIA ZEQUALIS. 
Nat. ord. Composit ®.—Chenanthophore, Lag.—Labiatiflore, Dec. 
TRIPTILION. Ruiz et Pavon.—Anthodium pentaphyllum, foliolis 
oblongis in tubum adproximatis, sibi invicem adpressis; basi sepius bracteis 
tribus-quinque angustioribus, inequalibus subimbricatus, persistens. Co- 
rolla uniformis 4-5-flora : flosculi omnes hermaphroditi, fertiles bilabiati; la- 
bio exteriore ligulaformi subovato, tridentato; interiore integro subulato, 
paulo breviore. Antherarum tubus basi decemsetosus. Achenia trigona, par- 
va. Pappus paleaceus deciduus; paleis longis apice ciliatis, vel ciliato- 
penicillatis, Receptaculum minutum, villosum. Plante herbacee, vel 
fruticose, parve, foliose. Flores terminales, subterminalesve, subinde ax- 
illares, subsessiles, sepius fasciculato-2-3-ni. Flosculi labio exteriore purpuro- 
ceruleo albo, aut luteo. Lag. MSS. 
T. cordifolium, caule paniculato: foliis sessilibus dentato-spinosis, caulinis 
rameisque cordato-ovatis; floribus terminalibus subterminalibusque sub- 
ternis. 
Planta herbacea, pulchella, dodrantalis, pedalisque, annua. Radix 
fibrosa. Caulis erectus filiformis, teres, ramosissimus, paniculatus, flexuo- 
sus, foliatus, puberulus, rigidulus, fusco-purpurascens. Rami alterni, con- 
similes ; ramuli subsetacei, 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 subsetacen 
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) 
parvi in ramulorum apice, vel et in axillis foliorum superiorum, sepe terni, 
subinde gemini, brevissime pedicellati, tres lineas circiter longi. Anthodium 
(Involucrum) foliolis quinque oblongo-lanceolatis, erectis in tubum adpres- 
sis, spinoso-acuminatis, puberulis, duobus interioribus paulo brevioribus, co- 
rolle subequale; in floribus lateralibus (fig. 3.) bracteis 4-5, lineari-subu- 
latis inequalibus subimbricatum, in flore centrali (fig. 1.) nudum. Corolla 
quinqueflora. Flosculi (fig. 4.—flosculus auctus, fig. 5.) bilabiati: labium 
exterius elliptico-ovatum, apice tridentatum, album, basi sepius lutescente : 
labium interius luteum. Stamina quinque; (fig. 6. multoties aucta ;—fig. 7. 
eadem magis aucta, antherarum tubo longitudinaliter fisso.) Filamenta sub- 
ulata, flava, supra basim antherarum (fig. 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. 
This remarkable genus has been raised, this year, in 
the garden of the Horticultural Society at Chiswick, from 
