Senna polyphylla (Jacq.) H.S.Irwin & Barneby (syn. Cassia biflora sensu Bojer; Cassia marginata Willd.; Cassia microphylla Sesse & Moc.; Cassia polyphylla Jacq.; Cassia tenuissima Sesse & Moc.; Peiranisia polyphylla (Jacq.) Britton & Wilson);

 

Desert Senna, Desert Cassia; 

 

Cassia biflora from TDL Herbal Park Yamunanagar Haryana
pls validate

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)

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Thanks ..., you found out something. There should be something in flowers and fruits. Let us find out.

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The confusion between Senna pallida (Cassia biflora L.) perhaps not as simple as we thought. The confusion started with several websites treating two as synonyms, giving the impression that perhaps two are very close and as such we have separated many plants with shrubby habit and lesser number of leaflets as Senna pallida and one more or less tree like habit and more than 7 leaflets as Senna polyphylla.

After going though various reliable sources I came to know than Senna polyphylla is very distinct from Senna pallida.

Senna pallida (syn Cassia biflora L.) Small shrub up to 3.5 m tall, stems slender; leaf stalk with two orange dots on petiole, base of petiole and leaflets swollen at base; leaf 5-6 cm long, leaflets 4-7 pairs, 2-3 cm long, 1.5 cm broad, widest near apex, base and apex rounded, veins obscure; flowers bright yellow , 3 cm across, in pairs on 2 cm long pedecels; fruit dry, flattened, 6-8 cm long, 3-5 mm broad, repeated x pattern on surface.

Senna polyphylla: Desert cassia Shrub or small tree: often 5 m tall; leaves often clustered 3-5 together at each node; leaflets 3-15 pairs, 5-10 mm long; flowers yellow 3.8 cm across, axillary racemes of two flowers; pod 8-15 cm long, slightly contorted, flattened between seeds.

Your views on this please

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Thanks .... 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

http://toptropicals.com/cgi-bin/garden_catalog/cat.cgi?uid=Senna_Poly...

http://toptropicals.com/cgi-bin/garden_catalog/cat.cgi?uid=Senna_Poly...

The 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.

.. provided the answer today, a short key but very helpful
Senna biflora: Deciduous 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 

We had discussed it earlier also on the basis of key provided by you

Recently one of my Cassia/Senna was identified as Senna polyphylla.

Is this Senna polyphylla or Senna biflora?

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I think it is the same plant you had uploaded earlier and identified by us as Senna polyphylla.

SHRUB ID......05.11.2011.........S.S......061: Planted in the gardens of the hotel. Id please.
Date/Time-...17th April. Morning.

ID 280210 3: Date/Time- 26/12/2009; 11.30 am
Location- Place, Altitude, GPS- Goa
Habitat- Garden/ Urban/ Wild/ Type-Urban
Plant Habit- Tree/ Shrub/ Climber/ Herb- Tree
Height/Length- Medium sized
Leaves Type/ Shape/ Size- oval
Inflorescence Type/ Size-
Flowers Size/ Colour/ Calyx/ Bracts-Yellow

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Probably a Senna species. Close-ups of foliage, flowers would be very helpful.

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The first photograph of ... appears to be Senna pallida (Cassia biflora auct.),

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Cassia biflora I hope?

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Yes, for me too this looks like Cassia biflora

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this is Cassia biflora

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This is the plant that is likely a Senna species; ID will still likely require a close-up or better-focused pictures.

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SK587 21 JUN-2017:ID : 6 posts by 2 authors. Attachments (6)

Pl. Check comparative images at Senna page in efi site. 

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Senna auriculata (L.) Roxb. ??? 

Couple of persons suggested it could be Senna auriculata instead of Senna polyphylla.

Fwd: SYMBIOSIS : 1086 : 2 posts by 1 author. Attachments (1)

Attaching a collage of Bumble bee visiting flowers of Cassia biflora,

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Correct name is Senna polyphylla 

please help to identify this flower /plant : 5 posts by 3 authors. Attachments (2) - 1 Mb each.

this is observed in UNA. Himachal pradesh.

Pl. check images at 

To me appears close. 

Closeup of the flowers showing all the details and fruits are necessary for proper ID. Hence ID cannot be confirmed based on these photographs.   Nevertheless, you may also check for  Cassia auriculata (old name) as well.

Thanks ..., I think it is very close.

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Senna polyphylla ?? Senna auriculata ??

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I think close to images at Senna polyphylla (Jacq.) H.S.Irwin & Barneby 

References: