Hmm… I will still consider that a cool season crop if it dies back in summer, just not a frost hardy cool season crop. The term cool season is all encompassing for me (. But very good example to clarify things.
Perhaps I stand corrected, that definitely sounds like a warm season plant 
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I haven’t researched Okra enough to know but some Hibiscus species do have edible roots. Okra is pretty much a Hibiscus species because the entire Hibisceae tribe is potentially all just 1 genus Hibiscus (In much the same fasion as the super genera Solanum & Ficus).
In particular Pineland Hibiscus (Hibiscus aculeatus) has edible roots. The species is closely related to Cranberry Hibiscus (Hibiscus acetosella), Roselle (Hibiscus sabdariffa) & Kenaf (Hibiscus cannabinus) which are all part of the Furcaria section or the new genus Sabdariffa.
Google is partially wrong. However I’m not sure which species is Broadleaf Sweet Pea but Everlasting Pea (Lathyrus latifolius) is 100% edible. The only concern for toxicity is in very specific rare cases, such as if you are starving & only eat Lathyrus species, only then can you develop lathyrisum (Or unless you are alergic - similar to how people get favaism from Faba Beans). If you are not starving & eat other things besides Peas or Lathyrus spp., this isn’t a concern. It should be noted that eating too many cultivated garden peas (Pisum sativum) can also have a similar Lathyrisum effect, especially when huge quantities are eaten on an empty stomach on a monodiet of Peas (Point is, don’t make Pisum or Lathyrus majority of your diet, especially when starving).
Below is Sam Thayer’s Page on Lathyrus latifolius & Lathyrus japonicus
Here’s John Kallas excert on Lathyrisum. The Best info on Lathyrus potential toxicity.
Hmm… This seems to be more so for fully dried seeds however Foraging Expert John Kallas says otherwise.
According to John Kallas in reference to immature seeds of Lathyrus latifolius : " Although pleasant and reminiscent of domesticated sweet peas, they are not as sweet and tender. But they are the best wild peas you will find. I love them. The pods themselves are too tough to chew."
He does eat them boiled like this.
According to John Kallas in reference to Ripe fully dry seeds of Lathyrus latifolius : “If you wait until the pods are tan and dry, the peas will be rock hard, but are good for later boiling like other dry peas, or for grinding into flour. Harvest the dry, hard brown seeds after the pods have gone fully dry and brittle. This is the way most cultures gathered the seeds. They would boil and then dry them for storage. When they were ready to use them, people would grind these high-protein peas into flour to add to other foods or to extend their wheat flour in bread making.”
John Kallas also states this warning towards the end
“From the research I’ve done, I cannot see any problem with eating any parts of this plant in moderation, in the context of a normal, healthy diverse diet. In fact, it is likely safer than dandelion greens for humans of any age.
There is an unlikely possibility that large amounts (like in food jags) of the unboiled peas (green or brown) eaten often might interfere, in temporary ways, with growth and development in rapidly growing bodies. From a perspective of an overabundance of caution, I would not make baby food out of the peas, or allow kids to engage in a food jag with the peas. Note that this is all about excess in a non-diverse diet, and even there, I am hesitant to mention this due to a lack of evidence that any negative experience will happen.”
Humans are incredible, what is pretty much poisonous to other animals we can eat deliciously 
! However on the flip side, many poisonous berries are only edible to birds.
But also Grapes are poisonous to dogs too!?
and I’m thankful to be a part of it! Chatting together with like-minded people is such a blessing! I’ve learned so much likewise I’m sure so many have learned from what I shared too.
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Thanks for the additional resources, I’ll check them out.
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