ROOEIBAI\O

GINER{L INTRODUCTION
The sdus Zzcr!.a L. (s.1.) b.lonss to lbe Itibe Laclucae of lhe 'amilv
AsMc.ac. Tl|ere is , dis.sEeh.nt anong difrccnt adhos aboul the numb€t oi speB
in $e 8e.us b*ause of tbe Ea$n that th.t have accepFd Ihe genus enher m a b'oadei or
n@scr sense. sojal (1961, I962), Tuisl (1968) and Jelirey (19?5) accePted $e narcw
genqic concefl of l/.a.a L. Sihrlely Shih {1937, 1988 & l99l ) also ft.tcd rbe Senu
in a turow ens. md nunmus genea, p!.viously t@ted as srctio$ ofr4cd.a L G I )
rn. C.photonhrttchus Boiss, Cicubito W^lk , Loeellitn Soja\, Muteediun C8 . ad
St Forhanphs BbC. weE Esum|ed. BEmr (1994) agted wiiri rhc cleifrcal'on
popos.d by Shih ( l99l) md accepted tl. senus la.rd. L in a naro* *nse *ilh c 7s
sp€cier. On the olberhand, the brcadr Senenc concePl ol lr.r!4, L. was accepl€d b)
veious aurho6 such 6 B€ntam il8?l):nd Slcbbi.s (1917) accepGn the getus io a
broder sens and inchd.d vdious ge.era d a sccrio. of L.r!.? L (s l. ) Kii! iczn ikor
( t 964 ) who enur e.ated I O0- I 50 species inc ludin8 M,kedi!, Cass as a slbSenus Lack
(2@7) Eporls c.60 spei6 'lducing 6 genen undq its svnonvdv Mabbcrlev (2008)
also @?pted the geoos in ilF bloader s€N dd Epods c l30 sp€ci6 leducing tbe
Eeaetu Cephabrht lch6 Boiss,, C,csdr14 walh, Lactucella N%arz LaaeAiun
Soja*, Mrr?ta Css. md .t a/t /o F.W. S.bmidr und,* ll|c synonyny of ,4.tuc4 L
The r.xa b€longing ro Letuo L. ls.l,) N nainly dhnbuted in Non}.m
henisphec, io Asia to New Guinq, in N. Aneric. lo Mexie, in ttopical Africa to South
Afris (L&t, 200r. In P.tisid 26 tara ol lh. 8au /,cr,ca L. (s.1,) e rcpon d
(Stwan. 1972) which e mcdy co.fn d ro thc lodhen .E in $e distiG Cnitral,
Cilgn, Astor, Swat, dd K!frn Vauey dd Kashmir .nd ext.nd to th. soulh in tle