Croton oblongifolius Roxb (?) from Kamrup district, Assam

[Karuna Das]

Dear All,

    Attaching images of what looks like Croton oblongifolius Roxb (?) . Please ID the plants.

 

Date :.09.03.2013

Location: Kamrup district, Assam

Family : Euphorbiaceae

Genus & species : Croton oblongifolius Roxb (?)

Vern. Name : Mahunda (Assamese)

Habitat: Grows wild .

Habit : Tree

Inflorescence : Androgynous spike

Flower : Male & female flower

Fruits : Not seen

 

With regards

Karuna Kanta Das

Guwahati 781012

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[Sukla Chanda]

 

 

This species had huge nomenclatural dispute from the era of Roxburgh! Basically this species is Croton persimilis Muell. Arg. Croton oblongifolius Roxb. (Fl. Ind. ed. Carey, 3: 685. 1832) is an illegitimate later homonym ( non Delile 1814, nec Siebr. ex Spreng. 1826). A new name C. roxburghii N.P. Balakr. in Bull. Bot. Surv. India 3: 39. 1962 (nom. illegit.) was proposed for it which also becomes a later homonym (non C. roxburghii Wall. 1840). C. persimilis Muell.-Arg. described from Sri Lanka. The two species(Croton oblongifolius Roxb. And C. roxburghii N.P. Balakr.) are merged and thus C. persimilis Muell.-Arg. becomes the valid name for this widespread species of' great medicinal importance.

Diagnostic  characters: Trees or Shrubs, 2–20 m high, deciduous; leaves oblong, elliptic to obovate; inflorescences sub-erect to drooping; male flowers pedicelled, sepals 5; petals 5; spathulate to oblong, stamens 10-15; anthers oblong, yellow;  female flowers pedicelled, sepals 5; petals 5, spathulate;  styles usually bifid; fruits globose to subglobose.

 

Regards,

Sukla

[Dr Santhosh Kumar]

MANY THANKS FOR THE DETAILED NOMENCLATURE.

 

Santhosh

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SANTHOSH
------------------------------------------
Dr. E.S. Santhosh Kumar MSc, PhD, FIAT, FLS (on leave for 2 years)
Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Palode
Thiruvananthapuram-695562
Kerala
India
www.drsanthosh.wetpaint.com

 

Presently working for the British Aerospace, Riyadh, KSA

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[Sukla Chanda]

It's my plesure Dr. Santhosh.

 

Sukla

[Neil Soares]

Hi,  Have this on my property at Shahapur. According to Dr.Almeida's 'Flora of Maharashtra' the new name is Croton vibralaie Almeida [nom.nov.]. The local name is Ghansar. Sending a few photographs to showcase the leaves.                      With regards,                        Neil Soares. --- On Wed, 3/13/13, Sukla Chanda <saha....@gmail.com> wrote:

[vip...@gmail.com]

I believe Dr Almeida has named this Croton after one of his teachers - Virbala Shah - who held a special interest in medicinal plants. The specific name is spelt as Croton virbalae.

Best wishes, Viplav

[Neil Soares]

Hi,  Thanks. My mistake. Yes. Croton virbalaie.                   With regards,                     Neil Soares. --- On Thu, 3/14/13, vip...@gmail.com <vip...@gmail.com> wrote:

[J.M. Garg]

Forwarding again for Id confirmation or otherwise please.

Some earlier relevant feedback:

This species had huge nomenclatural dispute from the era of Roxburgh! Basically this species is Croton persimilis Muell. Arg. Croton oblongifolius Roxb. (Fl. Ind. ed. Carey, 3: 685. 1832) is an illegitimate later homonym ( non Delile 1814, nec Siebr. ex Spreng. 1826). A new name C. roxburghii N.P. Balakr. in Bull. Bot. Surv. India 3: 39. 1962 (nom. illegit.) was proposed for it which also becomes a later homonym (non C. roxburghii Wall. 1840). C. persimilis Muell.-Arg. described from Sri Lanka. The two species(Croton oblongifolius Roxb. And C. roxburghiiN.P. Balakr.) are merged and thus C. persimilis Muell.-Arg. becomes the valid name for this widespread species of' great medicinal importance.

Diagnostic characters: Trees or Shrubs, 2–20 m high, deciduous;leaves oblong, elliptic to obovate; inflorescences sub-erect to drooping; male flowers pedicelled, sepals 5; petals 5; spathulate to oblong, stamens 10-15; anthers oblong, yellow; female flowers pedicelled, sepals 5; petals 5, spathulate; styles usually bifid; fruits globose to subglobose. Regards, Sukla

Have this on my property at Shahapur. According to Dr.Almeida's 'Flora of Maharashtra' the new name is Croton vibralaie Almeida [nom.nov.]. The local name is Ghansar. Sending a few photographs to showcase the leaves. With regards, Neil Soares.
I believe Dr Almeida has named this Croton after one of his teachers - Virbala Shah - who held a special interest in medicinal plants. The specific name is spelt as Croton virbalae. Best wishes, Viplav
Thanks. My mistake. Yes. Croton virbalaie. With regards, Neil Soares.

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With regards,
J.M.Garg

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[Tapas Chakrabarty]

Without seeing a close up of the leaves (both sides), I can not decide whether it is Croton persimilis Mull.Arg. emend. Philcox or C. joufra Roxb.

Regards,

T. C.