Talk:Asclepias tuberosa

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For some reason there was a recent change suggesting that this plant does in fact have milky stems. Perhaps this is because of a hybridization or some other cause? I think the confusion is that it is a member of the milkweed family, so the assumption is made that it has milk.

Milky: [1] Asclepias tuberosa 'Hello Yellow'
Not Milky: [2] [3] [4] [5]

I also have some botony books that list this as "Not Milky", but since they are in print, I can't show a link. Please note the "Hello Yellow" cultivar is supposed to be milky, but not the native plant. See here and here. There are only a few references to it being milky and those could be considered an error by assuming it was milky due to the name or hybridization. — Ram-Man ^{(comment) (talk)} 01:09, 28 August 2006 (UTC)[reply]

I have yet to see evidence of any hybrids of Asclepias being sold anywhere, other than exaltata (Poke milkweed) that has syriaca genes in it. — Preceding unsigned comment added by 107.77.192.184 (talk) 00:15, 10 February 2020 (UTC)[reply]

"Orange root"?

This species is listed at the Orange-root disambiguation page and somebody has rightfully questioned this as a common name for this plant since it is not listed in the article itself. Need source of some kind. Jason Quinn (talk) 19:47, 11 April 2013 (UTC)[reply]

Is it really a food source for monarch larvae?

I wonder if this plant is really a host plant for monarchs. I have a bed in which I've planted these plants, and I've never seen monarch larvae on them. That doesn't mean anything, of course. However, considering that it doesn't have milky sap, I suggest that it may not be palatable to monarch larvae. Bolstering this idea, I collected some milkweed beetle larvae from a Matelea plant, and I decided to feed them leaves of the A. tuberosa plant. They refuse to eat it. I gave them leaves of A. asperula, and they ate it right up. Victor Engel (talk) 14:42, 23 July 2013 (UTC)[reply]

I've seen them devouring the plants. The egg-laying behaviour is erratic, especially this year (there are no caterpillars on my A. syriaca yet this year). Check this article. I wonder if there are sub-populations of monarchs that prefer different species, perhaps what the adults were themselves raised on. Sminthopsis84 (talk) 15:48, 23 July 2013 (UTC)[reply]

Yes, monarchs will oviposit on it and can be successfully reared on it. However, it comes with the drawback of having basically zero cardenolide content, so the adults won't be protected from birds nor from OE. This is not the only species with a very poor cardenolide profile!

Taxonomic rank

Taxonomic rank is always indicated in botanical names; unlike in zoology there are several infraspecific ranks (subspecies, variety, forma). 160.111.254.17 (talk) 15:09, 27 June 2014 (UTC)[reply]

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