Euphorbiaceae Week: Euphorbia antiquorum from Delhi

[Gurcharan Singh]

Euphorbia antiquorum L., Sp. pl. 1:450. 1753

Succulent shrub, often planted in gardens and rockeries. The woody spiny species of Euphorbia can be separated as under:

Stem rounded, not angled or winged:....................................................................................   E. nivulia

Stem angled or winged

           Angles not produced into wing, spirally arranged:.......................................................... E. neriifolia

           Angles produced into wings

                      Wings 3-4

                                  wings running straight, sinuate, regularly dentate,..........................:..........E. antiquorum

                                  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/

[Rashida Atthar]

Thank  you Sir for the pictures and the keys. The minute differences  are brought out well, so important for identifcation of Euphorbias.

 

regards,

Rashida,
 

[JM Garg]

1st two images are of Euphorbia trigona as per Euphorbiaceae Fortnight: Euphorbia trigona from Delhi-GS-19