Pankaj ji
Thanks for pointing this out. I will correct it. As such it also needed some
formatting as names are running into second line.
Here it is.
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
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.......................................................................E.
milii
Spines borne on raised shield, usually shorter than 1 cm
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/
On Fri, Mar 11, 2011 at 7:10 PM, Pankaj Kumar <sahanipan...@gmail.com>wrote:
> Just a small error.
>
> Leaves shorter than 10 cm, uniformally green
> Stem and leaves uniformly red, leaves in whorls of three,
> petiole almost as long as blade..................E. cotoniifolia
> (cotinifolia!).
>
> Here in second step you have said uniformly green.... but then u r saying
> red.
> You may like to correct it.
>
> Pankaj
>
>
> On Fri, Mar 11, 2011 at 6:44 PM, Gurcharan Singh <singh...@gmail.com>
> wrote:
> >
> > Based on species already posted and expected one a simple key for woody
> > species of Euphorbia is presented
> > Perhaps we can expand the key for woody succulent species of Euphorbia as
> > under:
> > Stems unarmed; without stipular spines
> > Leaves shorter than 10 cm, uniformally green
> > 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; uniformally or partly coloured
> > 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...............................................................................................................E.
> > milii
> > Spines borne on raised shield, usually shorter than 1 cm
> >
> > 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/
> >
> >
>
>
>
> --
> ***********************************************
> "TAXONOMISTS GETTING EXTINCT AND SPECIES DATA DEFICIENT !!"
>
>
> Pankaj Kumar Ph.D. (Orchidaceae)
> Research Associate
> Greater Kailash Sacred Landscape Project
> Department of Habitat Ecology
> Wildlife Institute of India
> Post Box # 18
> Dehradun - 248001, India
>
