Sir, wanted to clarify two keys whether they should be included or not : One : Stems not developed above ground leaves all radical and Stem well developed above ground , leaves not radical Second : Cyathia is red in E. caducifolia Cyathia is green in E. neriifolia.
regards, Rashida. On Fri, Mar 11, 2011 at 7:41 PM, Gurcharan Singh <singh...@gmail.com> wrote: > Revised identification key for the woody species of Euphorbia > > Stems unarmed; without stipular spines > Leaves shorter than 10 cm, all leaves of same colour > Stem and leaves uniformly red, leaves in whorls of three, > petiole almost as long as blade.......E. cotoniifolia > Stem and leaves green, leaves alternate, petiole much shorter > than blade > Leaves shorter than 2 cm, less than 2 mm broad, branches > straight, mostly leafless > (leaves early > deciduous)......................................................................E. > tirucalli > Leaves longer than 3 cm, more than 2 cm broad, branches > zigzag, mostly with leaves.......E. tithymaloides > Leaves longer than 10 cm; lower leaves green, upper partly or > uniformally coloured > - Hide quoted text - > Leaves below the inflorescence uniformally coloured (red, > white or yellow); leaves not lobed...E. pulcherrima > Leaves below the inflorescence coloured only at base; leaves > lobed or not > Base of upper leaves pale green or pale white; leaves > lobed or not...............................E. heterophylla > Base of upper leaves red; leaves > lobed......................................................................E. > cyathophora > Stems armed with spines > Spines borne on stem, usually longer than 1 cm; two showy bracts > around cyathium...................E. milii > Spines borne on raised shield, usually shorter than 1 cm, two showy > bracts lacking > Stem rounded, not angled or winged > Shrub wiithout trunk with branches arising from base, > smaller leaves (3-8 cm long) > > and longer spines 0.5-1 cm.............E caducifolia > Tree with distinct trunk, leaves 10-25 cm long, spines > shorter than 0.5 cm........................E. nivulia). > Stem angled or winged > Angles not produced into wing, spirally > arranged:....................................................... E. > neriifolia > Angles produced into wings > Wings 3-4 > The wings running straight, sinuate, regularly > dentate > Stems green without white > bands....................................................E. antiquorum > Stems white wholly or > partially > The stems with > white bands on faces > Apex of stem > not cristate (without crowns at tips)...........E. lactea > Apex of stem > cristate (with crowns at tips)......................E lactea cv. Cristata > > The stems uniformly > greyish white...................................... ...E. lactea cv. White > Ghost > The wings running spirally, > ...................................................................................E. > tortilis > Wings 5-6, > undulate.....................................................................................................E. > royleana > > > > -- > Dr. Gurcharan Singh > Retired Associate Professor > SGTB Khalsa College, University of Delhi, Delhi-110007 > Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018. > Phone: 011-25518297 Mob: 9810359089 > http://people.du.ac.in/~singhg45/ > >