bulb types, was fritillaria

John Ralph Carpenter ralph.carpenter1@googlemail.com
Sat, 07 Jun 2014 08:47:24 PDT
Very interesting, Janos.four

On Saturday, 7 June 2014, J. Agoston <agoston.janos123@gmail.com> wrote:
> So, thank you for all the replies!
> In my first year of university (2002) the same questions have arose in me.
> For bulb I consider a plant which has at least one scale which is for
> and nutrient storage, and this scale surrounds the bud. Examples: Allium
> rosenbachianum, A. giganteum, A. sativum, A. ursinum. All of them has only
> one scale. (I have pictures somewhere... in the mass of 100 000+
> All of these scales are ment to survive one cycle. At the end the new
> vegetative bud will grow another scale with at least one other vegetative
> bud.
> Bulbs with many scales, but only for one cycle: The have more than one
> scale, and there is one secondary bud at the bottom of each scale, plus a
> big vegetative bud. The bud will make the new fleshy scales while the
> is growing with a new bud, which will grow in the next cycle. The rest of
> the scales will shrivel and decompose or make the tunic.
> E.g.:Rest of Allium species, Tulips, Iris × hollandica, Fritillaria,
> Leucocoryne, etc. This means you have a new bulb every year. In this
> regards Fritillaria is more close to Tulipa then to Lilium.
> And for Fritillaria I have a picture taken this year to rove it, but still
> i have to find it :/
> Bulbs with many scales and the scales exists more than one year:
> The outer scales shrivel, decompose or make the tunic, the inner scales
> further from the central bud each year. The most demonstrative examples
> the Amaryllidaceae e.g. Hippeastrum, Galanthus, Narcissus and Hyacinthus.
> Now for young Hyacinthus and Lilium bulbs if the growing season is optimal
> the whole bulb can be renewd, mostly because the inner bulb grows so big
> thath the outer scales can't keep up with the growing, and instead of
> expanding they split open and transport their stored food to the newly
> forming scales. But under normal conditions a mature bulb keeps the scales
> for 2 or more years.
> If you cut a bulb vertically and lucky enough you can see the old stems of
> former years. Better yet, start peeling a Lilium bulb (from the Asiatic,
> Trumpet or Oriental group) and after a few layers you can see the old stem
> of the bulb.
> Of course not all bulbs can be put into these groups, there are special
> ones, like Lilium pardalinum, which grows a new bulb each year, and still
> the old scales can be seen as Jim said with L. superbum.
> Here you can see a cut bulb of hyacinthus, the captions are in Hungarian
>  and you can see some pictures of various storage organs in my
> classification
> Regards,
> Janos
> Z5a, Hungary

> _______________________________________________
> pbs mailing list
> pbs@lists.ibiblio.org
> http://pacificbulbsociety.org/list.php
> http://pacificbulbsociety.org/pbswiki/

Ralph Carpenter
2 & 3 Stone Cottages
Chilmington Green
Great Chart
Kent TN23 3DW

01233 637567
pbs mailing list

More information about the pbs mailing list