Senna polyphylla from Delhi University Campus

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Gurcharan Singh

Oct 2, 2011, 9:16:22 AM10/2/11
to efloraofindia, Flowers of India, Tabish

Senna polyphylla (Jacq.) H.S.Irwin & Barneby, Mem. New York Bot. Gard. 35: 517, 1982

Syn: Cassia polyphylla Jacq.; Cassia marginata Willd.

Thanks Balkar ji for short key, which helped me to sort my photographs.

I had raised this query in my earlier mail

Some websites consider Senna polyphylla and Senna pallida as synonyms 

more reputed websites, however, treat them as distinct species 

Senna pallida (Vahl) H.S.Irwin & Barneby 
    syn: *Cassia biflora L*.; *Cassia biflora* Griseb.; *Cassia pallida*Vahl. 

Senna polyphylla (Jacq.) H.S.Irwin & Barneby 
    syn: *Cassia polyphylla* Jacq.; *Cassia microphylla* Sesse & Moc. 

Obviously the two species are very closely related. Could any member explore 
and find real differences between the two species so that identity of our 
plant can be fixed. 

Balkar ji provided the answer today, a short key but very helpful

Senna BifloraDeciduous to semi-deciduous shrub, up to 6 to 8 feet tall (1.8-2.4 m), 
3 to 5 feet in spread (0.9-1.5 m); pinnate leaves, 2 to 3 inches long (5-7.5 cm), 
4 to 6 pairs of light green leaflets

Senna polyphylla: Small evergreen tree or shrub, 7 to 12 feet tall (2-3.6 m); strong
 taproot; 3 to 15 pairs of leaflets, 0.16 to 0.4 inch long (4-10 mm)

My plant photographed from Delhi University campus photographed in September, it is a tree with 9-11 pairs of leaflets, well fitting into latter species


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


Madhuri Raut

Oct 2, 2011, 9:28:29 AM10/2/11
to Gurcharan Singh, efloraofindia, Flowers of India, Tabish
Very beautiful close up

Balkar Arya

Oct 2, 2011, 10:34:38 AM10/2/11
to Madhuri Raut, Gurcharan Singh, efloraofindia, Flowers of India, Tabish
Thanks Sir for showing these lovely Pics. In the light of this information i am also searching my pics for correction.

Dr Balkar Singh
Head, Deptt. of Botany and Biotechnology
Arya P G College, Panipat

Neha Singh

Oct 2, 2011, 11:23:05 AM10/2/11
to efloraofindia
Perfect close Up of Senna-polyphylla.

Thanks Gurcharan Sir.

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