SONCHUS DIVARICATUS, Desf.
SO N CH U S, Linn. (Exclus, spec.)
iSubgenus PRENOCEP1IALU3I , C. H. Schultz, Bip., in W ebb, Phytogr. Canar., vol. a, p. 426. (Gharact. emendand.)
Calathidia fructijera nulantia. Calyculi squamce scariosce (cum fasc ia media herbacea). 4 choe ni a
aptera, l^-v.S-coslata (costis crass i s , conti guis), loiidemque sulcis angustis cum costis alternantibus
exarata, plus minusve compressa, cceterum heteromorpha, Achcenia peripherica subincurva,
sublenticu/ari-compressa, quinquecostata : costis biformibus incequalibus; costce 2 dorsales, te-
nuiores, ecarinatce ; 2 utrinque marginales, crassiores, marginato-carinatce ; quinta ventralis, nunc
marginalibus nunc dorsa/ibus conformis v. subconformis. Achcenia disci recta v . subrecta , costis
cequalibus uniformibus ecarinatis estriatis v. obsolete i -3-striatulis; exteriora [\-v. 5-costata, len-
ticulari-v. tetragono-compressa ; centraliora compresso-tetragona, conslanter quadricostata. — Herba
perennis, dichotoma, parce foliota v . fere aphylla; calathidia lateralia terminaliaque, racemosa,
pedunculata.
SONCHUS DIVARICATUS, Desf.
Sonchus DiVARiQATus , • Desf. ! (in Herb. Mus. Par. ad specimen Ægyptiacum) in Annales du Mus., vol. 2, p. 21 a, tab. 46.
(Icon haud mala quoad babitum.)— Delile! Flor. Ægypt. III., p. io3.
Ex parte Microrhynchus hüdicaulis , D. C., Prodr., vol. 7, p. 180.
L omatolkpis nudicaulis , Cass., in Diet, des Sciences Nat., vol. 48, p. 4a4. (Ex descriptione quamvis incompleta et verosimi-
liter ad achænia imperfecta-vel immatura exstructa.)
Microrhynchus nudicaulis, Webb, It. Hisp., p. 3o. (Exclusis Synon. præter Desf.) •
R habdotheca divaricata , Webb ! in Bourg. Plant. Canar. exs.
Sonchus nudicaulis , C. H. Schultz, Bip., in Webb, Phytogr. Canar., vol. 2, p. 426.
ZoLLiKOFERiA CHONDRiLLOiDES, Feiizl (non D. C.), et postea Sonchus diva ri ça tus (Desf.), Ejusd., in Kolschy, Plant.
Ægypt. exs.
Planta herbacea, perennis, glauca, glaberrima, sæpe macrioribus Chondrillæ junceæ individuissat similis, foliis attamen et
habitu quemadmodum varians, 1 /2 -i 1/2-pedalis (specimina etiam, hebetata, occurrunt 2-4-pollicaria). R adix repens, crassitie
varia. C au les exiles v. subfasciculati, erecti, v. ascendentes, v. diffiisi, graciles, junciformes, medulla fared, subteretes,
lævigati, striatuli, flexuosi, v. fractiflexi, plus minusve ramosi (nunc paniculato-dichotomi, nunc simpliciter bifurcati v. itera-
tim regulariter v. inæqualiter dichotomi ; macriores indivisi), nunc fere aphylli et ad nodulos foliôrum loco squamula minuta
ovata v. ovato-aut oblougo-lanceolata herbacea v. submembranacea albo-marginata plus minusve concava acuminata nunc integer
rim a nunc fimbriata v. eroso-denticulata basi sagittato-v. eordato-auriculata instrued. R ami caule tenuiores, plerumque
aphylli et simplices, plus minusve divaricad. Folia subcarnosa, runcinata (levins profundiusve, lobis modo indivisis modo
simiato-dentatis v. irregulariter inciso-lobatis, nunc deltoideis acuds, nunc rotundads, interdum lanceolads v. imo lanceo-
lato-linearibus), cardlagineo-(albo-)marginulata et inæqualiter eroso-denticulata, interdum obovato-'oblonga sinuato-cre-
nata. Folia radicalia a-5 pollices longa, rosulata, in pedolum brevem basi dilatatum attenuata. Foliacaulina sæpissime pauca
(speciminibus macris plane nulla), invicem remota, sparsa, foliis radicalibus plerumque multo minora, nunc iisdetn coufor-
mia, nunc integerrima v. runcinato-dentata, sessilia, haud raro basi sagittato-v. cordato-auriculata et subamplexadlia. Calathidia
15-3o-flora, pedunculata, lateralia terminaliaque (interdum pleraque subterminaliasubfasciculata), remote racemosa;
fructifera cernua. P edunculi anthodio nunc breviores nunc æquilongi v. longiores, subdisdchi, firmi quamvis graciles, flora-
tione erecti v. subpatentes, secus apicem bracteolati at inferne sæpissime nudi, squamula bracteolis conformi v. subsimili
opposita comitati; fruedferi apice haud incrassad, plerumque cernui. Bracteolæ imbricatæ, scariosæ, squamulis calyculi
extimis conformes v. subsimiles. Anthodium 4-6 lineas longum, cylindraceum v. subcampanula turn, floribus i /3- i /-a brevius,
calvculatum, 8-10-phyllum; foliota biserialia, erecta, æquilonga, linearia, obtusa, mutica, striatula, planiuscula, herbacea,
late hyalino-marginata, apice papilloso-fimbriolata, basi demum fungoso-callosa; externa internis subdimidio latiora;
omnia maturitatc aehæniorum reflexa. Calyculi squamuia i i - i 3 , quadriseriales, laxe imbricatæ, planiusculæ, albo-scariosæ