Celery | celeriac - Apium graveolens | Apiaceae - Philippine name Apyo or kintsay

Apium graveolens is a plant species in the family Apiaceae commonly known as celery (var. dulce) or celeriac (var. rapaceum), depending on whether the petioles (stalks) or roots are eaten: celery refers to the former and celeriac to the latter. Apium graveolens grows to 1 m tall. The leaves are pinnate to bipinnate leaves with rhombic leaflets 3–6 cm long and 2–4 cm broad. The flowers are creamy-white, 2–3 mm diameter, produced in dense compound umbels. The seeds are broad ovoid to globose, 1.5–2 mm long and wide.

Apium graveolens, leaf cellery

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Apiales
Family: Apiaceae
Genus: Apium
Species: A. graveolens
Binomial name: Apium graveolens

Nutritional value per 100 g (3.5 oz)
Energy - 57 kJ (14 kcal)
Carbohydrates - 3 g
- Sugars 1.4 g
- Dietary fibre 1.6 g
Fat  - 0.2 g
Protein - 0.7 g
Water - 95 g
Vitamin C - 3 mg (4%)

Celery root, or celeriac, 
is also used as a vegetable.

Cross-section of a Pascal celery rib

Celery 

Head of celery, sold as a vegetable.
Usually only the stalks are eaten.