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Apium L.
Mark F. Watson
Royal Botanic Garden Edinburgh

Glabrous annuals or short-lived perennial herbs. Lower leaves pinnate, leaflets large, broadly ternately lobed; upper leaves small, ternate with narrowly obovate segments; petioles with membranous wings at base, particularly evident in upper stem leaves. Umbels compound, subsessile and often leaf-opposed, numerous in the top half of the stem; bracts and bracteoles absent. Calyx teeth obsolete. Petals white, obovate, acute with inflexed tip. Stylopodium subconical, styles short. Fruit ovoid to ellipsoid, mericarps prominently 3-ribbed. 
Apium graveolens L.

Vernacular Name: Celery (English) 

Erect to sprawling aromatic herb (smelling of celery when crushed), 30–80cm high. Lower leaves to 16 x 4cm, leaflets 1.2–2.5 x 0.8–2.5cm; upper leaves 0.8–1.6cm long. Umbels 1–5-rayed, rays 0.8–2cm long; umbellules 10–16-flowered, c 0.8mm across. Petals 0.7mm. Fruit c 1.3 x 1mm. 

Bhutan: C—Thimphu district (Gidakom). 

Ecology: Wet ground, ditches, 2200-2800m. Flowers June. 

Specimen List [1092]

Note: Introduced as a vegetable crop. 

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