Thank you Sir ji for explaining the details On Fri, Nov 4, 2011 at 3:57 PM, Gurcharan Singh <[email protected]> wrote:
> Madhuri ji, 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. > > > -- > 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 > http://people.du.ac.in/~singhg45/ > > On Fri, Nov 4, 2011 at 3:48 PM, Madhuri Raut <[email protected]> wrote: > >> 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 .Thank you >> >> >> On Fri, Nov 4, 2011 at 3:00 PM, Gurcharan Singh <[email protected]>wrote: >> >>> Thanks a lot Madhuri ji. The last photograph is very useful for this >>> group of steraceae. In fact one can identify the plant only from this. Here >>> is my paper on this published in 1972. >>> >>> >>> -- >>> 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 >>> http://people.du.ac.in/~singhg45/ >>> >>> >>> On Fri, Nov 4, 2011 at 2:54 PM, Madhuri Raut <[email protected]> wrote: >>> >>>> Sir ji, >>>> 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 Prasad ji 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. >>>> >>>> >>>> On Fri, Nov 4, 2011 at 2:45 PM, Gurcharan Singh <[email protected]>wrote: >>>> >>>>> Thanks Prasad 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 >>>>> http://people.du.ac.in/~singhg45/ >>>>> >>>>> On Fri, Nov 4, 2011 at 2:42 PM, prasad dash <[email protected] >>>>> > wrote: >>>>> >>>>>> Sit to me both DSC06683 and DSC06267 are awesome. Never seen such a >>>>>> wonderful phorograph (DSC06267) of dehiscence. >>>>>> >>>>>> Regrads >>>>>> >>>>>> prasad >>>>>> >>>>>> * * >>>>>> >>>>>> On Fri, Nov 4, 2011 at 2:14 PM, Gurcharan Singh >>>>>> <[email protected]>wrote: >>>>>> >>>>>>> *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. >>>>>>> >>>>>>> -- >>>>>>> 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 >>>>>>> http://people.du.ac.in/~singhg45/ >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Prasad Kumar Dash >>>>>> Ecologist, Orissa, India >>>>>> email: [email protected] >>>>>> ph. 09437444241 >>>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> -- >>>> Regards >>>> Dr.Bhagyashri Ranade >>>> >>> >>> >>> >>> >> >> >> -- >> Regards >> Dr.Bhagyashri Ranade >> > > > > -- Regards Dr.Bhagyashri Ranade
