Haplanthodes spp.

[dr.rakesh Singh]

Dear members
As per recent revision of Acanthaceae in India ,at KEW , we have now two species in Haplanthodes. . . H. verticillatus and H. tentaculatus with three inferior taxa -- H. t. var. tentaculatus , var. plumosa and var. neilgherryensis . (Haplanthus neilgherryensis is now recognised as Haplanthodes tentaculatus var. neilgherryensis ... this epithet is rampantly misspelled in literature , I found on internet .)
This Genus has Cladodes substituting leaves in flower bearing part .
H. verticillatus has cladodes 2•5cm or longer ,stiff , very sharp pointed bifid or rarely trifid ...accidental prick is very painful , stinging. Plant about a meter tall or less , stout . Flowers light to deep shade of violet .
In H. tentaculatus cladodes are up to 1•5cm ,soft , hairy , tip inconspicuously bifid , non-prickly .
Three varieties can be recognised by cladodes...
In var. plumosa cladodes are covered in dense soft white hairs , inflorescence which is actually terminal part of stem and branches , looking like plume .
In var. neilgherryensis terminal spike of cladodes and flowers is densely packed , meaning by , internodes are very small . And ofcourse cladodes not plumose .
Var. tentaculatus , seen in suitable habitat in Surat ,is having cladodes sparsely hairy , nodes widely spaced .

Flowers can be violet to whitish with dark brown striation deep in throat , more on upper side .

Presenting H. t. var. tentaculatus

[dr.rakesh Singh]

This batch of photos are from Surat city outer part , 09 01 2020 morning .

Habit is about one meter tall , much branched , not strong , staying erect when crowded , flowering spike always erect . Basal leaves as big as hand , size getting smaller upwards , ultimately turning into cladodes . 

Leaf , stem usually dirty green , sometimes red too . 

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[dr.rakesh Singh]

Haplanthodes tentaculatus var. plumosa

At Matheran , Feb 2017

[dr.rakesh Singh]

Haplanthodes verticillatus 

At Tungi near Lonavla , MH Feb 2019

[J.M. Garg]

Thanks a lot, Rakesh ji, for the wonderful presentation and clarity.

From where these keys have been taken ?

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[dr.rakesh Singh]

Garg Sir , from EFI page , from paper by J R I Wood . And descriptions in JCB herbarium , IBIS pages helped too . 

Eye opener was pricks sustained by H. verticillatus inTungi near Lonavala MH , then came the Paper on revision of Acanthaceae in India with good account of "Haplanthus neilgherryensis" which made things easier . I went through my collection and found out H. t. var. plumosa ( or plumosus ? ) recorded from matheran which is very distinct in having plumose cladodes . 

[J.M. Garg]

Thanks a lot, Rakesh ji 

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With regards,
J. M. Garg

[J.M. Garg]

Hi, Rakesh ji,

Based on your observations as above and earlier work, I reviewed all our posts in efi site.

I have recommended for corrections of a few by reposting, which you may pl. pursue.

One thing I observed after going through all the posts is that cladodes are pointed upwards in Haplanthodes tentaculatus (Nees) Majumdar or its to oother varieties, while these are pointed either straight or downwards in Haplanthodes verticillatus (Roxb.) R.B.Majumdar  

On Sun, 12 Jan 2020 at 19:08, dr.rakesh Singh <dr.rake...@gmail.com> wrote:

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[Dinesh Valke]

Thanks Rakesh ji for this post with comparative images of Haplanthodes spp.

It will certainly help when one is in doubts to distinguish the close spp. / varieties.

Regards.

Dinesh

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