Pennywort

I have a whole bunch of pennywort growing in my hugul like bed. Just learned you could eat it.http://www.eattheweeds.com/a-pennywort-for-your-thoughts-2/ Which I will do.
I found my exact species on the USDA Plant Database.http://plants.usda.gov/core/profile?symbol=HYUM Although it didn't help much in what I was looking for. xD
What does it do to help future plants, I know it stabilises soils.http://www.ourstate.com/pennywort/
Does it accumulate nutrients or anything?I've been trying to look through permaculture plant databses, but haven't found it.
To make it clear, I'm completely okay with it being there and am not trying to get rid of it, trying to use it.
Any advice you guys have, thanks.

Chemicals in: Centella asiatica (L.) URBAN (Apiaceae) -- Gotu Kola, Pennywort.

It's not a significant source of any nutrients. It does have some uses in herbal medicine - http://www.webmd.com/vitamins-supplements/ingredientmono-753-gotu+kola.aspx?activeIngredientId=753&activeIngredientName=gotu+kola&source=0 and http://www.mskcc.org/cancer-care/herb/gotu-kola which references some research. Searching Google scholar using the syntax "gotu kola" xxxxx gives studies on some of the conditions mention by James Duke below.

From The Green Pharmacy by James A. Duke, Ph.D.

Ageing - Gotu kola (CenteUa asiatica). Gotu kola is widely used in India to improve memory and extend longevity.

Alzheimer's - This herb has a centuries-old folk reputation as a memory herb that helps maintain strong mental vigor. I doubt that it would have maintained this reputation if there weren't something to it.

Burns - Naturopathic physicians suggest taking this herb (along with foods high in vitamin C) for treatment of bums. There is some evidence that the combination of the vitamin and three compounds in gotu kola—asiatic acid, asiaticoside and madecassic acid—stimulate collagen synthesis, a key element in skin repair.

Cuts, scrapes, abscesses - Gotu kola contains asiatic acid, a compound that spurs the development of the connective tissue that must form in order for wounds to heal. In clinical trials, external applications of gotu kola extract have proven useful in treating wounds, skin grafts, surgical incisions and even gangrene.

Skin Problems - This herb, native to India, stimulates the regeneration of skin cells and underlying connective tissue. In clinical trials, gotu kola has proven useful in treating eczema, wounds and other skin conditions. The latest research suggests that one compound (asiaticoside) in gotu kola is among the most promising treatments for one of history's most devastating skin diseases, leprosy. If 1 developed a skin problem in the tropics, I'd use crushed leaves to make a poultice and apply it to the affected areas.

Sores - In clinical trials in Brazil and elsewhere, gotu kola has proven useful in treating skin ulcers, surgical wounds, gangrene, skin grafts and traumatic skin injuries. The herb works by stimulating regrowth of normal connective tissue that underlies the skin. The active constituent appears to be asiatic acid.

Varicose veins - Several studies show that extracts of this Asian herb are useful in treating circulatory problems in the lower limbs, including venous insufficiency, water retention in the ankles, foot swelling and varicose veins. The plant has three active compounds, asiatic acid, asiaticoside and madecassic acid, that appear to work together.

Wish you was closer and it was summer! I'd love a start of it!