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
