Commelina longifolia


Commelina longifolia Lam., Tabl. Encycl. 1: 129 1791. (syn: Commelina diffusa Willd. ex Kunth [Illegitimate]; Commelina pedunculosa Spreng. & Link; Commelina salicifolia Roxb.);

Images by Surajit Koley (Validation by Manudev Madhavan)


Seychelles, India to S. China and Jawa (as per WCSP)


Slender decumbent herbs. Leaves alternate, 5-10 x 0.5-1 cm, acuminate at apex, attenuate at base; sheath 1-2.5 cm long. Spathe 1-1.5 x 1.5-2 cm, broadly ovate, acute at apex, connate at base. Branches of cymes equal, both 1-2 flowered. Flowers blue, 0.5-0.6 cm across. Sepals ovate. Petals ovate, undulate-entire. Capsule 0.4-0.5 cm, broadly ovoid. Seeds smooth, truncate at one end.
Flowering and fruiting: October-March
Grasslands
Indo-Malesia
(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi from India Biodiversity Portal)


 
https://08511630493324166816.googlegroups.com/attach/1745c3e7d75df7/commelina_big_15nov12_DSCN7441.jpg?part=0.2&view=1&vt=ANaJVrEbgqhgiA4942qxz2FoLY8t-w10uUSef02wLpQpF--bWMdmxKPJOjLaunNVUdgXmG0GMwKqg_MuGBUSXWKQj7N2R0zANrY7-mYrLsQqAwJ844Keb9w

This is again from an earlier thread
This also cannot be C. diffusa as in my previous thread
This is also C. longifolia Lam.


https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c4_7740.jpg?part=0.22&view=1&vt=ANaJVrH3JA2Bbyn_8usIeA7h68M5B5aJXzA1mrlb_AtOlWRVbYbXWG7zkzpRZyLY9l0ty9KnZaSSvBrqZuB_haA9sbTGTrMHfFQp5Z-eSNEtccIG3TZexlg
 
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c2_x4.jpg?part=0.17&view=1&vt=ANaJVrFQQeDbvA-vd-LaX454D6CknHa6otwqVGt6tjpDkjpmR1Wg6FdCShBitKYXKJP5QG-6r2CzHY3NNAXnDd9GtG1LwR8eIrvI3WlIsVOsCHNMyvvz1W8
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c2_7689.jpg?part=0.13&view=1&vt=ANaJVrE0cNQgifDFUGzdIwns9o-vkxwZXXMtS7QivFzMjTlUIeYOu4C5lo0PIVQomxcD-yB9UQKnrbV9FCzBvvLdkWtP3PD5cY-SQo-TSAxwh0-1gGu2t0o
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c3_7726.jpg?part=0.18&view=1&vt=ANaJVrEeCxO63ICE5CEzEGWG_o9NfKWmpTjNn_Ah8JA-SKp5pMlJhJ3AStA028SxWDgaBUT6yoHpsfcc8ToeS7Vw5ubRS1uA3y1vReCxjZLjxXRvQIOy92U
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c4_7739.jpg?part=0.21&view=1&vt=ANaJVrEzOpBo6lVvGBY35HzVA-hDRe2ATHkmRXKgGSkhAYmvptQm-X9MUicR7QtYGPr-Z3SxVfW6a_hweE-6t_QjUXhOgKtusr7T8sOVO1NifK-M-4ghnsc
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c4_7743.jpg?part=0.23&view=1&vt=ANaJVrG8bPmU-wyJSPgN4U1O3JQxo5bFViWPuf6sgA8iXmA0vOB478B3ER-nhzX43l8ll4nSlw5K93Q5HV7vlzOwx6v_nyi1GhPwDYHTSdA6cF9kWdE6C_g
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c4_7744.jpg?part=0.24&view=1&vt=ANaJVrHG-ZsIQDb_TGRPQZd8eYirDlhlvwUuj83w9X0Z8qAJaUVr5wQZdmj9osl7VU2xJ4spZiQ8Z0NDEcaHvkhIqUtVxGptGWr8V8fhauKkDBrqK-sNhFY
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c2_7688.jpg?part=0.12&view=1&vt=ANaJVrHRU6kibtuPcLEe0q0dRHWsf5r-I4xKrqBE2LFtdAwcjE4OIVSJVNFLYulkJ0V9VzDrvj8MJ0A8SJutyIbQLjgOQFjZn-_KbYQTUAN1kwFCGEGIXfk
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c2_x3.jpg?part=0.16&view=1&vt=ANaJVrGsUvPsYC-kD0hWX7EAgOO5jMbcyW0NVXKV7soefoi5Fvod-pv7g-pBtTiy3o7e9bl8RRTNH_lR5j06-J93-vqB4QLKm-muxrS3JoXNJdpdznX9_Do
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c2_7686.jpg?part=0.11&view=1&vt=ANaJVrEKcjyKsx2uI7HerasMk4TzwFe52a_zXng_pMrLtPTJ1GqAqIchrk3YeMmdf6QVgo99tHrfQfH0UtlFMuiJMwlksHd9F4H8VxH-fvR67gvpaGxPlgg
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c2_7685.jpg?part=0.10&view=1&vt=ANaJVrFzpU1FO3N_uy41zaosP1fE9fBDdYctM0-U8Mf9KbzpUxSivfmfgL2Cj9DcGbYPpN2adPak7BdBn4O-yZYS31HNguegERpcQNiiLoG1nCOzOPHeow4
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c2_7682.jpg?part=0.9&view=1&vt=ANaJVrHrGZmBDt2XCTNOjyKPnPN_k_Wr1dJSG93nagLAD3_j3MUOvh7MqPIPB4RCdlyleyfTQXN9x74WD0a5x3Ye6jm0kuyT8wRgv6JvYx6VfMbdwwQaw7E
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c2_7681.jpg?part=0.8&view=1&vt=ANaJVrGE_eqTMov5Mv-JDGX57eoPgLY5guInBZia2_EkxYbNT6ccr95TCZhbYLcccYa9qhDYQH94M4Gi-UrUdDK0JfOF9M4sj0huT5g2Hrdt8B9gwzgy1E8&google_abuse=GOOGLE_ABUSE_EXEMPTION%3DID%3D00ac073f32d72c1c:TM%3D1558161627:C%3Dr:IP%3D103.252.164.245-:S%3DAPGng0uvyq1BsL7C6efM2KWRwIKTYSPLnA%3B+path%3D/%3B+domain%3Dgoogle.com%3B+expires%3DSat,+18-May-2019+09:40:27+GMT
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c1_7650.jpg?part=0.7&view=1&vt=ANaJVrEPbfxoXazwQrZoqgpDiDVS6Mf9rqh74Lva_6QQtRVTuch9Qq_wEEORdHHLtnKp_Bjsl_snPffe_3HKpOBF4XZbHubDrv10FJ0efvMDXEihg5ekLe0
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c1_7646.jpg?part=0.6&view=1&vt=ANaJVrHJVLXm-22X1hbh3pBysw-TmyihinqmRHEYrajPlKJKPRc96Nz4aQdTqmgxTqlWney36CHGJmaPzNjFERQQL8-31Iywx5f6BWCsilYYXLLU6f-Y8jo
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c1_7645.jpg?part=0.5&view=1&vt=ANaJVrGi13_GOv7IxcMmoQk4DLf4C_HzLSo1M5GgfVuKCpxz_HP181Np2jX7O9ZagS2IPnuldNtW40GWBp0yXPCRnNoHsmYM2hmmlfuXAKB3sVwXnq7m9Pk
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c1_7644.jpg?part=0.4&view=1&vt=ANaJVrHla90g6XAaTlqrAbw6hCysZpiWFMnBukkeXebbbQrFgRcbn6VEkw_t7upoK8_kT8O1yIBsTWO2khfSMlTsJvhDPpPqFIRQZ30iIiIyP0dx82yNa1s
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c1_7643.jpg?part=0.3&view=1&vt=ANaJVrF73lGIbO8pSo9UfbmU_R9He20EO-mhwIY7WT39HHUNyQ1LHSiWyAY0rHg2FiPW2OB7ACxP7Y5gQ6YdhJJ54fZjO84b3jplIMX1Xx2JN8sz73Aj4Yo
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c1_7642.jpg?part=0.2&view=1&vt=ANaJVrEgso96PW33CTl_GnJj79O29FVZaOcw-dx93z3BWGHOjvvhm3DZhMIs3Q7NNKGFQd_fPYT4mYJOhbR84FaTg-T-mQ9fX1LYgSF0egvl9ZoTlJvmLTA
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c1_7638.jpg?part=0.1&view=1&vt=ANaJVrFgFG0PFSV2Y-xvodDzozXoQg5NbRrxMXRm0-xL9XaMUcqj0PVFVNXQ7aBwi6VdHBBLv3NGefbjb2nrujU90K5TUaPIilMDNyJmq-MREJ0e0NiWHiA
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c3_7727.jpg?part=0.19&view=1&vt=ANaJVrExAAtT7l1lw8YyjdvaxCoP-sVYhCw7WFecomIgReCNM7H-TDkKl-iBjtK6gaQLrLGiWJTZdI-PfI5ctc44nRbpmpvvPkJtrHY14colnKXaynC8t2Y
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c4_7738.jpg?part=0.20&view=1&vt=ANaJVrGuh1Ci05HRWr96BKZ606KblOq7TOajMLw6z2KgvL78CcyqR3mTw9enTm4V7d2pOek8DxK0s7385X7JDPi-yQUDiESS5gZAMN3C_HuEBgZxvICBJm4
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c2_x.jpg?part=0.14&view=1&vt=ANaJVrFr5K96_w_4chFsrp9sITqpF7fSBsdMQRYCC10InWzpYWnJuu3jGcia0_FncYM5-qunBnDvPZkrU5zZSP3XaiDDZPkBYuDPGsb4ZFPq6kcev_h4K3E
https://08511630493324166816.googlegroups.com/attach/eec5f10bc33c1fa2/c2_x2.jpg?part=0.15&view=1&vt=ANaJVrGYL8PB9TGwT8qCwAfHUmBoyLqZC_SixYzHTG4FpcDfOQnHINjcyOSzN3gMQkW5WD8tPU0qcd_ENTMc5Dn9jizsiTx_pKibwhdXrrQkn15eEr13COQ
commelina from Hooghly 22-Nov-12 sk: I have recorded photographs of commelina today. These herbs are growing in ditches along a rural roadside. Those ditches are also used as irrigation channel to paddy fields on the both sides of the road.
I am not sure if all pictures are from the same Commelina species.
I have recorded all within a distance of 100m and marked them as series "c1", "c2", "c3" & "c4".
Please note, four pics, marked as "c2_x", "c2_x2", "c2_x3" & "c2_x4" are from a plant on the dirt road and rest are from ditches, with or without water.
Species : UNKNOWN
H & H : slender long procumbent herb with branches
Date : 22/11/12
Place : Hooghly
It must be Commelina diffusa Burm.f. as per discussion in another thread

I now realize that i have made a lot of confusion in this post/thread. Certainly some pictures are of C. diffusa Burm.f., as explained by ... in another thread.
Not sure of all pictures. Next time i will try to find seed and capsules also, as per the discussion in the link above.
..., none of the attached pics in this thread is C. diffusa Burm. f.
I think there are two species here, one is C. attenuata Koen. ex Vahl (please note deeply cordate spathe in c1_7642.jpg) and the other is C. hasskarlii C. B. Clarke.
Please read C. longifolia Lam. in place of C. hasskarlii (for the larger flower of about 2.5 cm across).
Attached here a pic which I think shows capsules (3 capsules) and a flower. I do not find much info on C. attenuata except http://www.eflorakkl.in/Details.php?id=400. Since capsules here seem to have 2 cells each and cymes more than 2 flowered I think it is probably C. attenuata Koen. ex Vahl.


 
https://08511630493324166816.googlegroups.com/attach/1743cfd8927f99/com_26oct12_nkl_03.jpg?part=0.2&view=1&vt=ANaJVrGebApndk2ZdeO2xGlLsIGMiRkCogKRFZjV3Rr4mCAiN0OEPb2rUSl2jTo2ScdKRmFsJy-eX0sHaOTS5EqImIjhLyUivzr2WiP8cKlRsvlf5_Ut7iw
https://08511630493324166816.googlegroups.com/attach/1743cfd8927f99/com_26oct12_nkl_04.jpg?part=0.3&view=1&vt=ANaJVrGcBiSupl0fIj90iG72qzoMgO8rmEIzgQI3SlUd2wQecB-uOmBpl3PpUTU2weenQ1NQoOaCVM17kwPeNMBSNJbhUxjGJer-vKjYA-3hArkAN-fLiJs

sk2015sept06/06 - unlikely to be Commelina diffusa Burm.f. : 6 posts by 2 authors. Attachments (4)
This set is from my earlier thread of C. diffusa Burm.f.
FoC specifies 2 longer petals blue, 4.2-6 mm. Here they seem to be larger than that.
FoNA specifies proximal petal smaller. Here all petals equal, at least not smaller.
A similar looking one was identified as C. longifolia in a flickr acc - https://www.flickr.com/photos/haile/2384267981/in/photostream/
On Roxburgh's C. salicifolia (C. longifolia Lam. of BSI) Haines wrote "petals equal except that the lower has a shorter claw." Haines also wrote flowers are smaller than in "nudiflora" (C. diffusa Burm. f.).
On C. hasskarlii C.B. Cl., Haines recorded, "close to C. salicifolia, differing by the broader leaves, inflated sheaths, less acuminate spathes rarely over .8 inch.... ."
KEW has a herbarium of C. hasskarlii from UP - http://apps.kew.org/herbcat/getImage.do?imageBarcode=K000794517
Can it be C. hasskarlii C.B.Cl. of my table?
I think this species is C. longifolia Lam.
This one looks like Commelina longifolia


https://08511630493324166816.googlegroups.com/attach/6c1c3ed737f1c941/DSCN7440.jpg?part=0.8&view=1&vt=ANaJVrGlQ4os4y_PXoZC4A8Dx7uXXpH1ebwak5CUw_lHnc9b2Zqkpqwijcl_0Jqecvbb358ipPsaiidZGVtW-O50pg3OdNtxQllSCPqJ3JsAjNGTLwVU8jg
https://08511630493324166816.googlegroups.com/attach/6c1c3ed737f1c941/DSCN7439.jpg?part=0.7&view=1&vt=ANaJVrHJIAvCOhW5gFO6iCzUJa6r2Ufk9wAmyDdoUVPZiSqnEqJm4iQePEb3KtvkK5MPMFR_3cIcbfvzEt3m8cFGQETrzpeYGJACryh5lAr7tGkbGmYu1fQ
https://08511630493324166816.googlegroups.com/attach/6c1c3ed737f1c941/DSCN7439.jpg?part=0.7&view=1&vt=ANaJVrHlcLOIcLwUN_UqygN9LjSDtu6owjVkN7XtU0hC5HlWUBVRipvBmcdHBmzysPfk-g47OpomKaq1g1M9knb5Qf-AIJQne6opoTdysqzjqwTBViKELA8
https://08511630493324166816.googlegroups.com/attach/6c1c3ed737f1c941/DSCN7432.jpg?part=0.2&view=1&vt=ANaJVrH0XYx4I_6XM7hqmhtXChh52r1rsC13bMLRJXYT4F2QNtDmwK0I5T-aqv2UCT-EQ8k3KGOLaEPyU-K0xbJdiZ82ZXJRUBeugnR3G42O5njiilrCVTY
https://08511630493324166816.googlegroups.com/attach/6c1c3ed737f1c941/DSCN7433.jpg?part=0.3&view=1&vt=ANaJVrHTp_32sTxBOIXAUCgZWNX6QfPfhVKtQpkoegHwBDod2ZquWmcF-dkYcHjaaooCp3qkKAubCC-8DNhw0oo6M6NrrnyMIi8oiXdaOal46Mejw4CBzn4
 
https://08511630493324166816.googlegroups.com/attach/6c1c3ed737f1c941/DSCN7436.jpg?part=0.5&view=1&vt=ANaJVrEBPSFn7Sy5fZ48vaZTInKZtDOwKEDne7u9iJlPfs9DbbTSMFUGi7gzq-aS9eOOvCVoUxV5wUHIero9TNnSLDJKBwH3K4_mpAJMcCyJILnkoBt5q-I
https://08511630493324166816.googlegroups.com/attach/6c1c3ed737f1c941/DSCN7434.jpg?part=0.4&view=1&vt=ANaJVrH4qKbq-M2pSqcCJziGru8JLK7rKeJ4SoZSLeTuI-2RaXLT9fkNPhSK9mnhT3K7EJEO-J-rjnY2UI_Xksi8jjsP49eufDU7CEf7OpELu4wvNGUitJ4

https://08511630493324166816.googlegroups.com/attach/6c1c3ed737f1c941/DSCN7431.jpg?part=0.1&view=1&vt=ANaJVrGU4EJQGpWnLHxo_WHTQnLlAWcPpN3UxAThSMI2Lmpfm0rmn6h6t_-SctaTYZmsGKqL4EeGCR2NoVEnZJ5z-5dvp7vlxgYmuTZsuvhivDE5maSFRGg
commelina in canal from Hooghly 17/11/12 sk:  7 posts by 3 authors. Attachments (8)
Of the 20 species of Commelina described in The F. B. I., vol6., p369-374; only three species - C. sikkimensis Clarke, C. salicifolia Roxb.; C. appendiculata Clarke have spathes more than One and a Half inch. 
The fourth one C. undulata Br. doesn't have any spathe size mentioned in the book, but do have leaves between 4-5 in. And it has been mentioned as a slight variety of C. obliqua.
I do not have stats on leaf size of this species (it was not possible to measure it), but comparing the spathe size with that of leaves, i think my species has leaves of bigger than 15 cm x 1 cm.
We can leave C. sikimensis (leaves 2-3 in x 1/4-1/3 in).
Which of the above three is my species? Or should i go for an exotic one?
Species : UNKNOWN
H & H : wild herb in a canal, prostrate, partly erect, growing along with water hyacinth on water surface.
Date : 15/11/12, 10.30 a.m.
Place : Hooghly
Posted Commelina, is I think Commelina diffusa Burm. f. Fl. Ind. 13. t. 7. f. 2. 1768. [=C. nudiflora of Moon, Cat. 5. 1824; Hook. f., Fl. Br. India, 6: 369. 1892. non L., 1753]. ID based on field (in vegetative) observations of mine, I may be wrong (seeds 5, not appendaged, testa reticulate are the few key chr. to ID the species).
Commelina appendiculata is having spathes of 5 to 10 cm long, 2 to 2.5 cm wide flowers, (seeds 2-3, with appendages, testa smooth)
I personally do not find any qualitative differences in C. sikkimensis & C. diffusa. 
And C. undulata is with fused spathes at margins. And the posted plant is with spathes free on margins.
Spathes length, pubescence is vary according the environment, so it could be difficult to judge the species, basis of quantitative characters. Seed and Capsule characters are play important role in species differentiation at least in genus Commelina.  
Thank you very much ... for the ID & keys to Commelina
So, it is the same species as in my earlier uploads at efi thread 1 and at efi thread 2. As for sizes of spathes i must add that flower sizes also vary, because the flowers in my first upload (in the 1st link) is smaller than the rest. 
I hope Commelina diffusa Burm. f. Fl. Ind. 13. t. 7. f. 2. 1768. is the same as - C. diffusa, Burm. Fl. Ind. 18, t. 7, f. 2. as in the attached screenshot of part of F. B. I. vi. 369. or - Commelina diffusa N. L. Burman, Fl. Indica. 18, plate 7, fig. 2. 1768. at FoC. 
Here is the attached screenshot. Attachments (1)
Commelina longifolia Lam. as per another thread.
Thank you ..., an outdated literature - http://biodiversitylibrary.org/bibliography/16058#/summary members may find interesting!
 
https://08511630493324166816.googlegroups.com/attach/62232e15c9947418/com_26oct12_nkl_05.jpg?part=0.5&view=1&vt=ANaJVrH02ygBN0-268YBWLhy3Q-2FWuLjS4o-wFtQCj9oSRiFtIf_irar2Jm452RU3OuRkdIPn_4p7TVpY7SGpeLkHqgh6ytLB8Z1Ld-Y3UVrhJBGJdX58Q
https://08511630493324166816.googlegroups.com/attach/62232e15c9947418/com_26oct12_nkl_06.jpg?part=0.6&view=1&vt=ANaJVrHSt95tkxjvUUZg-7mzQbJ9Wa5_Pr9jQFJwTcWWKiOFFvga43CapjFB-pvv4eILz5CRg8Vp-xDgtNhsyX0vAL5yDGrqrtwoUoO9xFRZXuL1iPhZvm8
https://08511630493324166816.googlegroups.com/attach/62232e15c9947418/com_26oct12_nkl_07.jpg?part=0.7&view=1&vt=ANaJVrHbskM_Se2lmpN3FRnaZD6Gby1vb0_Q_2CsLx1pMlLfC6XAo3Ot9q1y1a2UDlYHMoOOXHdVfEQ9PHPO5XABIOyi1Upu3Gk43aj_D_GKzn2diyVfcxs
https://08511630493324166816.googlegroups.com/attach/62232e15c9947418/com_26oct12_nkl_01.jpg?part=0.1&view=1&vt=ANaJVrEopCTwLmh1oRuE8-1rsWdeceF38wYJfexvQ5WXjtmlUsypemGs57EHEDt-41AAAnqdOdgX0dy0os2CA1F-1XVM4St6305jnsrfZPpNeIB9FJtq1v8

Commelina ID from Hooghly 28/10/12 sk1:
This Commelina flower is relatively big.
Species : UNKNOWN
H & H : erect herb of bout 1 foot, not sure if there is prostate part or any branch at base; growing at the edge of a paddy field among filth and other herbs.
Date : 26/10/12, 10.20 a.m.
Place : Hooghly
This could be Commelina diffusa Burm.f. (Commelinaceae)
Thank you very much for the ID.



References:

An Excursion Flora of Central Tamilnadu, India By K. M. Matthew (1995- Details with keys) 
Floristic Diversity of Assam: Study of Pabitora Wildlife Sanctuary By Bora, Yogendra Kumar (1993- Details with keys)
Comments