https://de.wikipedia.org/wiki/Stangensellerie#Systematik_und...
Innerhalb der Art Apium graveolens werden mehrere Varietäten unterschieden:
Apium graveolens var. graveolens
Knollensellerie (Apium graveolens var. rapaceum (Mill.) DC.)
Staudensellerie (Apium graveolens var. dulce (Mill.) DC.)
Schnittsellerie (Apium graveolens var. secalinum Alef.)
Die Wildform ist der Sumpfsellerie (Apium graveolens var. graveolens). Aus ihr gingen die Kulturformen hervor.

http://www.gardendad.com/guides/how-to-grow-celery/
There are three general categories of celery that are cultivated for the kitchen: stem celery (dulce variety), root celery or celeriac (rapaceum variety), and soup or leaf celery (secalinum variety).

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Note added at 1 day 9 hrs (2018-08-09 15:36:41 GMT)
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'Table celery' might be preferred.
https://www.farmersweekly.co.za/farm-basics/how-to-crop/how-...
In South Africa, we distinguish between table celery and soup celery varieties. Soup varieties are more spreading and the leaves are used in soups. But these have been almost entirely replaced by more upright, taller-growing varieties, with the outer leaves and trimmings effectively used as a by-product for soup packs.

http://windwhistlefarmproduce.com/our products.htm
Our soup celery is our secret ingredient. It is peculiar to Northern Ireland and is not grown in mainland UK. It is much finer than conventional table celery and has a peppery flavour more like a herb giving Northern Irish vegetable soup its distinctive taste.