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From: Gusman Guy <ggusman at ULB.AC.BE>
Subject: Re: A lobatum

Dear Jake,
Nice website and album of Arisaema.
Your A.  yunnanense var. is, indeed, one of the beautiful forms of A. lob=atum Chen Yi introduced in the trade a couple of years ago. On the other =hand, A-145 turned out to be probably an Amorphophallus. One still has to=see the spathe.
Best wishes.
Guy

>Hello group,
>  I believe that I have Arisaema lobatum, but I purchased it as Arisaema
>yunnanense var. on the tag. After 3 years after I purchased this plant.
>I finally had a chance to speak with the original wholesaler that
>supplied the local retail nursery. He was at a winter plant sale and
>had photos of plants that looked very familiar, the photos were right
>off of Chen Yi's web site. I asked him who his Chinese supplier was and
>he fest up when he realized I knew Chen Yi's collection numbers that
>went with some of the plants (Podophyllums and Paris). He was also
>selling A-145 [Arisaema sp. (46) ] from this years list, labeled
>Arisaema sp. They were not up yet, so I hope to see his nursery stock
>later this year when everything is up.
>
>  I have a link to my photo page, please look at the Arisaema album.
>Arisaema yunnanense var. is the first 5 photos.
>
> http://community.webshots.com/user/natureboy77
>
>
>  Is this Arisaema lobatum? Sure looks like it when comparing to the
>Gusman book on page 216. The bulbs are even colored like the picture in
>the book.
>
>  If this is A. lobatum, I have had good success with it for 3.5 years.
>Getting bigger ever year, but no new starts above ground. I dug it up
>this winter and found 10 tuberlets around it, most were already
>detached. It has tried to set seed every year, but fails to ripen.
>  - Most of my special plants grow in old galvanize tubs, because we
>have a excessive moles problems, which cause roots to dry out or plants
>to be washed down their tunnels. Plus, I have tons or these tubs to use
>up.
>  - The soil mix is 60% coarse compost, 30% pumice, and 10% sand. I have
>had good success thus far.
>  - I cover some of Arisaema with large glass cake lids or glass
>cloches. I do this because I live in an area that is considered
>temperate maritime Mediterranean climate on the West coast of the U.S.
>I have dry summers and very wet winters. We just had 27 days of rain
>straight, almost beat the record of 30 days. The cloches help prevent
>an excess of water by diverting it to the sides and dampening the soil,
>but not saturating it around the bulb. I do check to make sure that the
>soil does not get to dry and remove them when the growth initiates
>above ground.
>
>  I hope this is helpful. I have learned so much from this discussion
>group over the last couple years, be nice if I can give back.
>
> Thanks,
> Jake Pool
> University of Washington
> Public Horticulture (Bachelor's degree), soon to complete
> Graham, WA
> USDA Zone 7a
>
>