Yes
Wild celery is the parent of the cultivated celery (A. graveolens dulce) as well as celery leaf (A. graveolens secalinum) and celeriac (A. graveolens rapaceum). This entry only deals with the wild celery, the other plants are dealt with separately. Celery is an indispensable ingredient in any kitchen, embraced for its distinctive flavor and versatility. Unlike most other vegetables, nothing goes to waste with celery -- all parts of the plant are edible, including the crisp stalks, feathery green leaves, aromatic seeds, and even the bulbous root. The celery we know today is a descendant of wild celery, which has fewer stalks and more leaves. HISTORY. Celery root is derived from wild celery, which has a small, edible root and has been used in Europe since ancient times (it is mentioned in Homer's Odyssey as selinon). It is unclear when celery root was first cultivated but there are references to it dating back to the seventeenth century. The leaves of the wild celery plant are typically dark-green, long, slender blades about 1/2 - 1 inch wide with rounded tips and definite raised veins. Wild celery can often be found growing in beds amid pondweeds and other submerged plants. Wild celery has a long history of medicinal and food use. it is an aromatic bitter tonic herb that reduces blood pressure, relieves indigestion, stimulates the uterus and is anti-inflammatory. The ripe seeds, herb and root are aperient, carminative, diuretic, emmenagogue, galactogogue, nervine, stimulant and tonic. Celery leaves are too often forgotten and end up in a compost pile instead of on a plate. Leaf celery (aka smallage, cutting celery, or Chinese celery) is closely related to wild celery. It has a stronger, more assertive flavor than the stalk varieties and adds more depth of flavor to soups, sauces, and stews. It can also be used as a garnish in place of other herbs like parsley or cilantro.
http://www.pfaf.org/user/Plant.aspx?LatinName=Apium+graveolens http://bloomiq.com/ediblestips/celery http://www.eattheseasons.com/Archive/celery_root.htm http://www.aquaticbiologists.com/algae--weed-id-guide/submerged-weeds/eel-grass-(wild-celery) http://www.naturalmedicinalherbs.net/herbs/a/apium-graveolens=wild-celery.php http://bloomiq.com/ediblestips/celery
is wild celery edible