Lactuca serriola


Images by Gurcharan Singh, D S Rawat and Gurcharan Singh, (Inserted by Gurcharan Singh) (Please click on links to see details and more images)
https://08511630493324166816.googlegroups.com/attach/41495d2b115cd31c/Lactuca-scariola-Univ-campus-Kashmir-4-DSC06267.jpg?part=0.6&view=1&vt=ANaJVrEuoQmyG2cS_OZ4TZuRpfxbYyokxrEPgnmecnXVtzr-nGzs0ZRECtaz-P4LfCNpYlxBwKvVnPeJn_zJnpIdEIwj-lPWQJiiuTtjl5RE96ZWHbLEKT4
https://08511630493324166816.googlegroups.com/attach/cdcb98e673e7e9ce/Lactuca-scariola-Balgarden-Kashmir-2-DSC06684.jpg?part=0.2&view=1&vt=ANaJVrEauUE6N60IWE0vkCCDQ4cGmwG0exwlvJzwC7_IUY1xvxzCdjy8QBP4eXvJ3Uhz8GO-pv2_Tfth8Shxr6A-yWbvLkp6JDsU9bzjueOUove6FD98Csc
https://08511630493324166816.googlegroups.com/attach/bea5715a2d7652c7/L.serriola_DSR_1.JPG?part=0.1&view=1&vt=ANaJVrFFXo24SkpZ9E1DJbkQ2sFRqYOKCsg8klEdx3VAfozG6EnYtLhrH-ZxWJBIwBy8L6H_5se7q2IhE81VJs6iL7xi6l5MjAzfFI91kjnNKEXx28N8Vj4
https://08511630493324166816.googlegroups.com/attach/bea5715a2d7652c7/L.serriola_DSR_3.JPG?part=0.3&view=1&vt=ANaJVrG4q8W91ptCXBXBlBAR7gVnvy_03ejBMWu2tMTjSdoJxNWKclTrVes0-CpmMd1tVjr4DXeyACEvgLCZQlmnRo66zNMrMD-dGEO_gG-XjjFPOzdhoWc














https://08511630493324166816.googlegroups.com/attach/cdcb98e673e7e9ce/Lactuca-scariola-Balgarden-Kashmir-5-DSC06683.jpg?part=0.5&view=1&vt=ANaJVrFCeKQQOToKfOnve1sSIKXXFE_DggavjwcimkxKAzZLo0AfeBt9bXxwkc64mvAxfWVUN1yE5tCoJ1uEC5SvUiiwzTOcGgJVXILF1bzFpds9GY7Tj0o
https://08511630493324166816.googlegroups.com/attach/cdcb98e673e7e9ce/Lactuca-scariola-Balgarden-Kashmir-3-DSC06686.jpg?part=0.4&view=1&vt=ANaJVrG_SUfJxuhg0tYvK9s0T3N4SXV7ByHDayelgfwypE6p3Dw2pahdDr36Lmj14Azd1JnjKsDuMjdl9_UI9dRVa2yI4JmjSnm8umxoCelEelKhsEi_uWg
https://08511630493324166816.googlegroups.com/attach/cdcb98e673e7e9ce/Lactuca-scariola-Santa%20Clara-DSC05806-California-1.jpg?part=0.6&view=1&vt=ANaJVrGHULaYpvXfStik06pzbPvyBLVg70QCYckW8Gw7lXsgaOYrq78_3xDNGjtlhscmQonoqTJuwzq-0ipXyVJYE1RrSWFb1h14Oshs_zVirOECPatsmMM
https://08511630493324166816.googlegroups.com/attach/41495d2b115cd31c/Lactuca-scariola-Balgarden-Kashmir-1-DSC06681.jpg?part=0.1&view=1&vt=ANaJVrEl-YGh3MglKRzJW8ufJ99QG8NGOBc9pxVnoMNP4nt-O3TNVIO6EvVOVDnoTfLgoCugE0z8m9O4Mt9NkerzkkNgFsd1IcWXuY8X7xDANk280TldonE


Tall prickly herb reaching 1.5 m, branched, prickly towards base; leaves sessile, pinnatifid with toothed segmrnts pointing downwards, prickly on midrib and nerves beneath, upper leaves stem-clasping with arrow-shaped base; heads yellow, 9-12 mm in diam., in long panicles with spreading branches; involucre bracts oblong; achene brown nearly 3 mm long with slender almost as long longer beak, pappus hairs white.


Lactuca serriola from Kashmir: Lactuca serriola L., Cent. pl. II:29. 1756 (Amoen. acad. 4:328. 1759)
syn: Lactuca scariola L.; Lactuca augustana All.
Common name: Prickly lettuce
Tall prickly herb reaching 1.5 m, branched, prickly towards base; leaves sessile, pinnatifid with toothed segmrnts pointing downwards, prickly on midrib and nerves beneath, upper leaves stem-clasping with arrow-shaped base; heads yellow, 9-12 mm in diam., in long panicles with spreading branches; involucre bracts oblong; achene brown nearly 3 mm long with slender almost as long longer beak, pappus hairs white.
Very common in Kashmir valley in wastelands, borders of fields and road sides, photographed from Balgarden and University Campus in August.
Very beautiful set of photographs. esp Lactuca-scariola-Balgarden-Kashmir-3-DSC06662.jpg and the one showing dehiscence. Never seen something like this before.Thank you... for mentioning the word. I was waiting for someone to mention it so that I can share my appreciation too as I did not know how to describe it.
Thanks a lot ... The last photograph is very useful for this group of asteraceae. In fact one can identify the plant only from this. Here is my paper on this published in 1972.
Thank you Sir ji for the paper. Very nice paper on key to the genera based on achene characters. And yes today I learned a new word in Botany 'achene' meaning single-seeded fruits .
..., interestingly it is not achene in the real sense, but a term very commonly used in this family. The fruit type is actually cypsella (formed from two united carpels with inferior ovary, dry fruit containing single seed). The real achene is found in Ranunculaceae in Ranunculus, Anemone, Clematis, etc. carpels are free and single seeded dry fruit is formed from single carpel. In other genera, Delphinium, Aquilegia, etc., each free carpel contains more than one ovule, and fruit matures into follicle.
Very nice pappus.. nice to be able to hold and it not fly away from the slight breeze created by breathing ...
 
https://08511630493324166816.googlegroups.com/attach/bea5715a2d7652c7/L.serriola_DSR_2.JPG?part=0.2&view=1&vt=ANaJVrFkeLzfpOX10MxfcUxe1C_9KAvPRyeaS8NpFVno1b-v52fFu_dmysOVOaz01GQ-zGTIn8DahZSXQtqGwNI_h69bMuSkC6CguFDie3K2859V7JiUwVo

ASTERACEAE Fortnight Part 3-Ligulate Heads: Lactuca serriola from Uttarakhand_DSR_12 : Attachments (3).  3 posts by 2 authors.
Lactuca serriola L. is a common and fast spreading weed in Pantnagar.
Flower heads open for short duration in morning and wither later.

Very nice illustrative photographs. I liked the last picture of the achene showing different parts clearly.
Thank you .... Achenes are important in most of the cases for identification in Asteraceae.
Yes ... Here is my old paper on that
1972-Achene-morphology.PDF
Lactuca serriola L., Cent. pl. II:29. 1756 (Amoen. acad. 4:328. 1759)
syn:  Lactuca scariola L.; Lactuca augustana All.
Common name: Prickly lettuce
Tall prickly herb reaching 1.5 m, branched, prickly towards base; leaves sessile, pinnatifid with toothed segmrnts pointing downwards, prickly on midrib and nerves beneath, upper leaves stem-clasping with arrow-shaped base; heads yellow, 9-12 mm in diam.,  in long panicles with spreading branches; involucre bracts oblong; achene brown nearly 3 mm long with slender almost as long longer beak, pappus hairs white.
Very common in Kashmir valley in wastelands, borders of fields and road sides, photographed from Balgarden and University Campus in August.
Thanks for showing this sir.. I think this is also making invasion in our area, could get a similar plant from Panipat and Kaithal.. will share soon, though I could not get the open heads...
This species in Pantnagar has less lobation in lamina.
 
https://08511630493324166816.googlegroups.com/attach/5695e6224a863/m_DSCN1242.JPG?part=0.4&view=1&vt=ANaJVrGcGEvtaqY89IZDWFCcj4f_lC7d85Ol8LppJiWcQrTR7OcJa3cgDYDKxG9K_EBgNsU98nRBM7K1TAoLW7w5QpzLcK7IX-KMREZYi7fpGfjo40gnG7E
https://08511630493324166816.googlegroups.com/attach/5695e6224a863/m_DSCN1241.JPG?part=0.3&view=1&vt=ANaJVrET2relgXq__ZG7IzmJE0sW1ahJ9L6vOzu4oeVnD-7cthbF0aonaE5QpQznZe0vyhXA8_6VooVSkHKikkt5diUx0j1g7nl1KSj0FKAFEzVrKzB3Wns
https://08511630493324166816.googlegroups.com/attach/5695e6224a863/m_DSCN1244.JPG?part=0.2&view=1&vt=ANaJVrEWybdFT7e-cLBobyS5ibZbrb4aw2rER73FlWR3HlUfeCgvf0V0hKyO8cglgCSD6bok_YACMGxp_6JqYeznpmolvweRIXBSBNOYfWkc_3YyB6h1REo
https://08511630493324166816.googlegroups.com/attach/5695e6224a863/m_DSCN1243.JPG?part=0.1&view=1&vt=ANaJVrHIp_3gmiMkgzHk7NBwURK_-VgktNN4crCuntDzoDXZIX5ucvfTI9fIlj7d8qvnxNu6GaenruBuTxiQT6V-plZwyGNw_lvHGbSc8CjKrIEgc54cn9M

PLANT ID from PU, CHANDIGARH : 3 posts by 3 authors. Attachments (4)
Habit: A Herb of height ~5.5 ft with spirally arranged leaves 
Habitat: Roadside
Location : Panjab university, Chandigarh
Date: 7/6/2016
Please check for Lactuca serriola (Asteraceae).
L.serriola in eFI.
Thanks, ..., for the Id. It seems to match with images at Lactuca serriola

 

References:
Comments