Heterostemma dalzellii Hook.f., Fl. Brit. India 4: 48 1883.;
.
het-er-oh-STEM-uh — from the Greek heteros (different) and stemma (garland, crown)
¿ del-ZEL-ee-eye ? — named for N. A. Dalzell, collaborator with Gibson, of Bombay Flora
.
commonly known as
: Dalzell’s heterostemma
.
Endemic to: Western Ghats of India
,
Please note the variance in leaves’ size, shape; and in the colour of the flower. 

Note the change in colour of central structure of the flowers. 

Flowers are little over half inch (about 15 mm) across.
,

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het-er-oh-STEM-uh — from the Greek heteros (different) and stemma (garland, crown)
¿del-ZEL-ee-eye ? — named for N. A. Dalzell, collaborator with Gibson, of Bombay Flora
[image: Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
Sep 13, 2009, Yeoor Hills (part of Sanjay Gandhi National Park)
commonly known as: Dalzell’s heterostemma
Endemic to: Western Ghats (of India)
… more views at various times and places:
 Please note the variance in leaves’ size, shape; and in the colour of the flower.
Note the change in colour of central structure of the flowers.
Flowers are little over half inch (about 15 mm) across.
Jul 24, 2011 … Yeoor Hills
[image: Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image: Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
– Sep 19, 2010 … Yeoor Hills
[image: Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
– Jul 18, 2010 … Yeoor Hills
[image: Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image: Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:   Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
– Aug 16, 2009 … Yeoor Hills
[image: Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
– Oct 9, 2008 … Tungareshwar Wildlife Sanctuary
[image: Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
– Sep 27, 2008 … Tungareshwar Wildlife Sanctuary
[image: Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
– Aug 26, 2007 … Silonda Trail, Sanjay Gandhi National Park
[image: Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<http://www.google.com/url?q=http%3A%2F%2Fwww.flickr.com%2Fphotos%2Fdi…>
[image:    Heterostemma dalzellii]<>
– Aug 15, 2007 … Tungareshwar Wildlife Sanctuary
[image: Heterostemma dalzellii]<>
[image:    Heterostemma dalzellii]<>
[image:    Heterostemma dalzellii]<>

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Heterostemma ¿ species ? : 7 posts by 3 authors. Attachments (10)
I find this plant at deciduous forests of Northern Konkan: Tungareshwar Wildlife Sanctuary and Sanjay Gandhi National Park.
… attached photos with file names having location and the dates.
I have referred Ingalhalikar ji’s Further Flowers of Sahyadri. The book has 3 Heterostemma species illustrated, of which 2 are very close what I have found.
Page 345 and 348 show H. dalzellii and H. tanjorense respectively.
H. dalzellii is distributed in deciduous forests of Northern Konkan
And, H. tanjorense in evergreen forests of southern hills of Sahyadri.
Today’s find at Yeoor Hills (part of Sanjay Gandhi National Park), I discovered that the central structure of the flower changes colour.
I have started thinking it to be H. dalzellii based on distribution and appearance-wise (earlier had thought it to be H. tanjorense).

Since it is not ditto as shown in the book, ID please … it could be some other species of Heterostemma not known to me.


I hope you now get to see the attachments.

As put in the message above, I found Heterostemma plants in large numbers — about 10 -12 separate places along a trail in Yeoor Hills, last Sunday (16 AUG)
At Tungareshwar, I have not found the plant this year yet; perhaps yet to flower.
In the photos above, point to notice is the central structure of flower changing its colour from cream to golden yellow to maroon.

To avoid confusion, I have not added photos in which, the petals (I hope, they are petals) are of maroon colour … not sure whether it is just a change due to ageing of flowers OR a different species of Heterostemma.


I have collected this plant from SGNP, Borivali
and it came out to be Heterostemma dalzellii Hook.f. in Fl. Brit. India 4: 48, 1883; Cooke, Fl. Pres. Bombay 2: 232, 1958 (Repr.); Almeida, Fl. Mah. 3: 246, 2001; Singh et al, Fl. Mah. St. 2: 365, 2001.
Synonyms: H. wallichii Dalz. & Gibs., Bombay Fl. 152, 1861.


Thank you very much, …

This was an important identification for me, pending since long, oscillating between H. dalzellii and H. tanjorense.



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Asclepiadaceae (milkweed family) ~ Apocynaceae » Heterostemma dalzellii
Synonym: Heterostemma wallichii
het-er-oh-STEM-uh — from the Greek heteros (different) and stemma (garland, crown)
¿ del-ZEL-ee-eye ? — named for N. A. Dalzell, collaborator with Gibson, of Bombay Flora

commonly known as
: Dalzell’s heterostemma
Endemic to: Western Ghats of India
Attached views from Yeoor Hills (part of Sanjay Gandhi National Park)
… for more views: http://www.flickr.com/search/?w=91314344%40N00&q=Heterostemmadalzellii&m=tags


I think this plant is considered rare and endemic to the region


Heterostemma earlier known by Oianthus deccanense, three to four sp. found in Maharashtra

H. dalzelli
H. urceolatus

and more I forgot


Heterostemma dalzellii Hook.f. Fl. Brit. India 4: 48. 1883.

Very interesting generic name. I couldnt make out why they are called Heterostemma. I mean what is the difference in crowns?


What I could find from internet …from
A book called “Contributions to the botany” by Robert Wight
Archive

Owing to the variable nature of the corona in this genus, we have been under the necessity of making its essential character rest on the form and structure of the pollen masses (which resemble those of Stapelia and its allies), and the twinig habit. Each of the species referred to this genus has a form of the crown peculiar to itself: the first has the leaflets dilated, entire, and spreading, with the interior pro-cess similar in form but smaller ; the second has them obcordate, much dilated, with the margins free and overlapping, and the interior process erect flesh j, incumbent on and nearly equalling the gynostegium in height; in the third thej are furnished with a subulate tooth or horn on the back, wmle the interior process is re- duced to a mere gland.


Thats really great. Thanks for the information….


Yes … This is also what I found out

A new universal etymological technological, and pronouncing dictionary of the English language……..by Craig

Corona in each of the  species is different.



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Asclepediaceae climber for id 230910MK1 : 12 posts by 7 authors. Attachments (4)

Please help to id this Asclepediaceae climber.

Date/Time-

12-09-2010 / 05:00 PM

Location- Place, Altitude, GPS-

Dindigul dist; ca. 450msl; TN

Habitat- Garden/ Urban/ Wild/ Type-

mixed scrub forest (wild)

Plant Habit-

climber herb

Height/Length-

Up to 3 metre

Leaves Type/ Shape/ Size-

6 x 3.5cm;

Inflorescence Type/ Size-

Flowers Size/ Colour/ Calyx/ Bracts-

ca.1.5cm across


Very beautiful Asclep. Thanks for sharing the photo. Check for other Tylophora species in TN region. A wild guess, I think it must be Tylophora dalzellii.


Tylophora dalzellii can be a choice


… not Tylophora dalzelii … it looks different … http://www.flickr.com/search/?&w=all&s=int&mt=&q=Tylophora%20dalzellii


For T. dalzellii, the flowers would have been just 5 mm and on long slender pedicels. Here the flowers are said to be 1.5 cm. This should be T. indica (syn T. asthamatica).


… are right. I only made a wild guess that it might be T. dalzelli
…: did you check for other Tylphora species in TN / S. india.
I am attaching the photo of T. indica (syn. T. asthmatica). The petals and corona are whitish whereas in your species the petals are orange and the corona is purplish brown. Could it be an interesting hybrid ? Attachments (2)


This is not Tylophora, its a species of Heterostemma or Oyanthus


Swarupanandan et al., (1989) reduced Oianthus as synonymous to
Heterostemma. Maybe you are right about this plant being Heterostemma. Which species ?


Corolla valvate, corona lobes spreading away from the staminal column is Heterostemma. I agree with … It seems to be H. dalzelli
that shows a lot of variations in colour.


You are absolutely right, I have that paper. If you study this genus you will realise that there is tremendous variation in color, form and texture of the corolla. Even the corona shows a lot of variation. The species delimitation is also very unclear. So I wont be able to say more unless I get the specimen in hand. But I somehow very strongly feel its Heterostemma.



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Oianthus sp.:

This would probably be identified by our members as Heterostemma dalzelli.
Spoke to Dr. Almeida & Santosh Yadav. Their take :
Heterostemma dalzelli is the only species of Heterostemma that occurs in Maharashtra and is very rare. In fact, Dr.Almeida claimed that he has till date not actually seen a decent specimen.
– what occurs in the Borivali N.P. is most likely a species of Oianthus.
– further study is required.

Sending a few of my photographs.


how big are the flowers?


1 inch.


Beautiful flower and a truly attractive colour. Does the petal have protusions? Oianthus is now a synonym of Heterostemma (by Swarupanandan et. al., 1989). But we have to find out which spiecies it is?


the plant in question is definately not Heterostemma dalzelli. infact we have a altogether different plant of Heterostemma dalzelli which is collected from SGNP.


It should be Heterostemma dalzellii Hook.f. as per link: Dinesh Valke

Also Heterostemma decanense (syn: Oianthus deccanensis) is much different.


Heterostemma dalzellii



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Climber for ID : Yuwaraj Gurjar Indian Flora – facebook group: Posting what is unidentified on Indian Flora facebook group, uploaded by … The climber was clicked in September` 2012, in deciduous forest of Nagla Block – Sanjay Gandhi National Park (Maharashtra). please advice the ID


… most probably Heterostemma dalzellii Hook.f. (family Apocynaceae)


we had similar discussion on Indian Flora


It’s Heterostemma species …


The posted Heterostemma species leaves are not matching with H.dalzelli….i suppose ..


…, you could be correct with your doubt.
I have noticed these flowers and plant for about 4 – 5 times, flowers changing their colours as per age, leaves too being variable. At base they are quite large with irregular shape as well as randomly sunk and raised surface; upper leaves getting smaller in size and shape getting regular.
Will wait for comment(s).
Me too keen on knowing this plant, and whether there is any other species in SGNP of Heterostemma.


This is Oianthus deccanensis. My photographs and our previous discussion on this are available in the archives of this group.


My photographs and our previous discussion on this are available at this link


It should be Heterostemma dalzellii Hook.f. as per link: Dinesh Valke

Also Heterostemma decanense (syn: Oianthus deccanensis) is much different.


It is Heterostemma dalzellii only


 


.

References:

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