Cucurbit for ID uploaded by Shrikant ji a relook

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Gurcharan Singh

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May 7, 2013, 8:44:50 AM5/7/13
to efloraofindia, Shrikant Ingalhalikar, Vijayasankar Raman
Kindly have a re-look at this upload by Shrikant ji


There seems to be a lot of confusion on the net regarding species of Momordica, often referred to as teasel gourd (though this name actually belongs to another cucurbit Cucumis dipdaceus which we dug out from our older posts). It seems M. dioica, M. cochinchinensis and M. subangulata subsp. renigera are much confused, although they are quite distinct in flowers and fruits. All three share a large bract at the base of flower (tip of peduncle).and male and female flowers on different plants.
Based on flower the three can be differentiated in that flowers of dioica are yellow, without dark spots (nectaries) at the base of corolla, whereas remaining two have distinct dark dots at the base of pale yellow to nearly white corolla. The corolla lobes of M. cochinchinensis are pointed at tip, they are obtuse or rounded at tip.

The fruits of dioica and M. subangulata are narrowed distinctly towards tip, whereas they are rounded at ends in M. cochinchinensis, in which the spines are not that dense, fruit larger mostly longer than 8 cm, turning yellow and finally red. In M. dioica fruits are smaller, usually shorter than 6 cm densely covered with longer spines. In M. subangulata there are two subspecies, subangulata with longitudinal ridges, no spines, surface totally smooth, and subsp. renigera with tubercles present and in longitudinal rows, surface more or less spinescent if ridges are present.

I have feeling that flower uploaded by Shrikant ji belongs to M. subangulata. Please comment.

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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

J.M. Garg

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May 17, 2013, 2:47:17 AM5/17/13
to efloraofindia, Ajmal Ali, arunk...@botany.du.ac.in, ren...@lmu.de, Gurcharan Singh, Dinesh Valke, Shrikant Ingalhalikar, Vijayasankar Raman, Dr. Santhosh Kumar

Forwarding again for Id confirmation or otherwise please.



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J.M. Garg

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May 17, 2013, 5:04:01 AM5/17/13
to efloraofindia, Ajmal Ali, arunk...@botany.du.ac.in, ren...@lmu.de, Gurcharan Singh, Dinesh Valke, Shrikant Ingalhalikar, Vijayasankar Raman, Dr. Santhosh Kumar


---------- Forwarded message ----------
From: Shrikant Ingalhalikar <shrikant.i...@gmail.com>
Date: 17 May 2013 14:20
Subject: Re: [efloraofindia:154219] Cucurbit for ID uploaded by Shrikant ji a relook
To: "J.M. Garg" <jmg...@gmail.com>


Thanks for resurfacing, the ID is yet uncertain. M. subangulata has calyx lobes purple from outside. I have pictures of plant that conforms to this ID key. I am attaching the picture of fruit of this query plant (? or just an ovary?) if it helps. The fruits did not ever get mature beyond this stage. Regards
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Shrikant Ingalhalikar
12, Varshanand Society
Anandnagar, Sinhagad road
Pune 411051. INDIA
Momordica.jpg

Gurcharan Singh

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May 17, 2013, 9:30:22 AM5/17/13
to J.M. Garg, efloraofindia, Ajmal Ali, arunk...@botany.du.ac.in, ren...@lmu.de, Dinesh Valke, Shrikant Ingalhalikar, Vijayasankar Raman, Dr. Santhosh Kumar
I think it is a female flower, and if my idea is correct, looking at the young ovary this may be Momordica subangulata subsp. renigera, often confused with M. cochinchinensis or sometimes M. dioica, latter having yellow flowers without dark spots and former with dark spots but acute to acuminate petals, as uploaded by Surajit ji.




-- 
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

Gurcharan Singh

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May 17, 2013, 9:33:26 AM5/17/13
to J.M. Garg, efloraofindia, Ajmal Ali, arunk...@botany.du.ac.in, ren...@lmu.de, Dinesh Valke, Shrikant Ingalhalikar, Vijayasankar Raman, Dr. Santhosh Kumar
Forgot to mention that in M. subangulata subsp. angulata fruits are smooth with longitudinal ridges.



-- 
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
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