131344 LESSER MARSHWORT Apium inundatum (Apiaceae) * Creeping. Creeping and prostrate, hairless perennial with smooth stems. Found in damp ground, often on the margins of ponds and marshes, and sometimes growing submerged. FLOWERS are white and borne in small stalked umbels with 2-4 rays (Jun-Jul). FRUITS are narrow ovoid. LEAVES are pinnate with narrow, hair-like leaflets, not unlike those of some water-crowfoot species. STATUS-Widespread but rather local.