PENTANEMA DIVARICATUM, H. Cass.
PENTANEMA, H. Cass., in Bullet. Philom., 1818, p. 76; Dict. des Sc. Nat., vol. 23,
p. 565, et vol. 38, p. 373. — D. C., Prodr., vol. 5, p. 474. — C. H. Sch. Bip., in Walp.,
Rep., vol. 2, p. 953,
Subgenus PSI LOCH.KT A, Nob.
P a p p i setæ subintegerrimæ (secus apicem, silb lente v a ld e äugen te, obsolete serrulalæ) , angustissirnæ.
Ped uncUli op p o s it ifo lii, elongati, filifo rm e s . Ramulorum et ramillulorum ev olu lio ind efinite progressiva.
R a d ix annua.
PENTANEMA DIVARICATUM, H. Cass., 1.1. c.e.:— Dv Ç., 1. c., p. 475.
Planta siibsemi-pedalis v. imerd um subpedalis (macrior etiam occurrit 3- 4-pollicaris), annua, habitu Pulicarioe Arabicce,
at gracilior, villis longis albidis nodulosis flexuosis basi conico-incrassads hirsuta simulque glandulis clavatis v. subglo-
bosis stipitulads minutis creberrimis puberüla, nunc ramosissima, nunc parcius ramosa. R adix gracilis v. filiformis, sub-
simplex, descendens. Gaulis rufescens v. violaceus, teres, erectus, gracilis (speciminibus macris fere filiformis), indefinite
paniculato-ramosus (speciminibus robusds ab ima basi divisus, macrioribus ad medium usque alriusve simplex), remote
foliatus. R ami similes cauli at tenuiores et plerumque parcius folia ti, alterni (v. infimi ad collum radicis verticil lad), alii
oppositifolii, alii axillares, subdichotomo-paniculati, modo subfastigiad, modo paniculam irregulärem, elongatam
efformantes, plerumque divergentes, inferiores haud raro divaricati. R amuli filiformes, plus minusve. divaricati. Folia
alterna, sessilia, integerrima, i-nervia (nervo filiformi, subtus carin ante, secus basin incrassato, supra impresso),. remote
pennivenia, tenuia, glaucescentia, plus minusve hirsuta (præserdm ad marginem), heteromorpha, apice modo obtusissimo
modo acuminulato plerumque callosula.'Folia radicalia obovato-v. oblongo-spathulata, rosulata, mox emarcida. Folia caulina
infima radicalibus subconformia ; proxime sequentia oblonga v. obovato-oblonga, basi plus minusve angustata; superiora
ovata v. ovalia v. oblonga, gradadm minora, supra basin brevissime angustatam nunc cordato-auriculata nunc rotundata,
subamplexatilia; summa minuta, plerumque linearia v. lineari-oblonga, basi sensim angustata. Folia ramealia conformia foliis
caulinis similique modo secundum situm varias exhibenda formas. Folia ramularia foliis ramealibus superioribus conformia
at minora. Calathidia numerosa (speciminibus vegeds copiosissima), solitaria, longe pedunculata, erecta, campanulata, 3-4
lineas aka, multiflora, heterogama, breve radiata; disco planiusculo, anthodio vix longiori. P eduhcult io - i 5 lineas longi,
oppositifolii (initio terminales), solitarii, filiformes, tenerrimi, subdivaricad v. assurgentes, violacei, hirsutissimi, monoce-
phali, subdistiche alterni, ebracteati v. secus apicem bracteis raids sparsis minimis anthodii squamis exdmis conformibus
ins trued. A nthodium circiter 3 lineas altum, hemisphaerico-campanulatum, hirsutissimum, polyphyllum, 5-7-seriale, laxe
imbricatum, subsquarrosum, discum æquans v. paululo superans, radio paulo brevius. Squamæ heteromorphæ, inæquilongæ
(ab exdmis brevibus ad penintimas gradadm longiores), planiusculæ, uninerviæ; exteriores lierbaceæ, virides ; interiores
chartaceæ, albidæ. Squamæ extimæ subpatentes v. imo defléxæ, spathulato-filiformes, obtusiusculæ, supra subtusque dense
glanduloso-puberulæ simulque (at præserdm secus margines) setoso-hirsutissimæ, apice recurvo. Squamæ proxime sequentes
lanceolatæ, acutæ, simili modo ac squamæ extimæ hirsutæ et glanduloso-puberulæ (parcius tarnen), plus minusve recurvæ.
Squamæ mediæ conformes squamis penextimis at angustiores, erectæ, facie glabellæ v. laxissime glanduloso-puberulæ, dorso
glanduloso-puberulæ, nonnisi juxta apicem setosse, marginibus a basi ad medium v. paulo aldus fimbriatæ, iude ad apicem
setoso-hirsutæ. Squamæ penindmæ lanceolato-lineares, subulato-acuminatæ (acùmine foliaceo, recurvo, setoso), facie glabræ,
dorso laxe glanduloso-puberulæ, fimbriatæ. Squamæ intimæ paulo angustiores brevioresque squamis penindmis, at cætero
istis conformes et simili modo puberulæ ac fimbriatæ, apice autem nec setosæ nec recurvæ. Receptaculum plano-convexum,
glaberrimum, obsolete scrobieulatum. F lores homochromi (exsiccad fiavi),'omnes fertiles. Flores- radiales circiter ao-3o,
uniseriales, foerainei, ligulad, floribus disci vix triente longiores. F lores disci numerosi, reguläres, tubulosi, hermaplirodid.
Corolla florum radiàlium circiter a i/a lineas longa« Tubus filiformis, glaber, pappum æquans. Limbus patens, subre-
curvus, sublineari-liguliformis, 3-v. 4-nervius, apice tridentatus (dentibus subæqualibus v. inæqualibus, delfoidèis, acutis),
extus ad dentes glanduloso-puberulus, reliquo glaber. Corolla florum hermaphroditorum vix alineas longa, obeonieb-
filiformis, recta, tenerrime quinque-nervia, 5-dentata (dentibus deltoideis, acudusculis), extus ad dentes glanduloso-
puberula, cætero glabra. Stamina paulo infra corollæ medium inserta. F il amenta capillaria, glaberrima, antheris subduplo IV. Il