Classification
Class
Magnoliopsida Brongn.
Order
Apiales Nakai
Family
Umbelliferae
Genus
Apium L.
 Nomenclature
Scientific Name:
Apium prostratum var. filiforme (A.Rich.) Kirk, Stud. Fl. New Zealand 196 (1899)
Synonymy:
  • ≡ Petroselinum filiforme A.Rich., Essai Fl. Nouv.-Zél., 278 (1832)
  • ≡ Apium filifome (A.Rich.) Hook.f. (1852)
 Description

Glab. perennial herb with slender deeply descending taproot; stems very slender, branching, prostrate to ascending, often sublianoid, up to c. 4 dm. long. Lvs mostly 3-foliolate (rarely with 1 or 2 further pairs of lflts), on very slender petioles up to ± 6cm. long. Lflts irregularly lobed or incised; terminal lflts up to c. 10 × 10 mm., us. 3-lobed, on petiolules up to 1 cm. long. Umbels up to 10 mm. diam., on very slender peduncles up to ± 3 cm. long; often 3 at a node or with secondary umbels. Rays unequal, 5–15, up to c. 5mm. long. Petals white. Fr. ovoid, ± compressed, subcordate at base; (1)–2 × 1–(2) mm.; ribs thick.

[From:  Allan  (1961) Flora of New Zealand. Volume 1 as Apium filifome]

 Biostatus
Indigenous (Non-endemic)
 Bibliography
Connor, H.E.; Edgar, E. 1987: Name changes in the indigenous New Zealand flora, 1960–1986 and Nomina Nova IV, 1983–1986. New Zealand Journal of Botany 25: 115–170.
de Lange, P.J.; Rolfe, J.R.; Barkla J.W.; Courtney, S.P.; Champion, P.D.; Perrie, L.R.; Beadel, S.N.; Ford, K.A.; Breitwieser, I.; Schönberger, I.; Hindmarsh-Walls, R.; Heenan, P.B.; Ladley, K. 2018: Conservation status of New Zealand indigenous vascular plants, 2017. New Zealand Threat Classification Series No. 22. [Not Threatened]
de Lange, P.J.; Rolfe, J.R.; Champion, P.D.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Norton, D.A.; Hitchmough, R.A. 2013: Conservation status of New Zealand indigenous vascular plants, 2012. New Zealand Threat Classification Series 3. Department of Conservation, Wellington. [Not Threatened]
Kirk,T. 1899: The Students' Flora of New Zealand and the Outlying Islands. Government Printer, Wellington, N.Z.
Richard, A. 1832: Essai d'une Flore de la Nouvelle Zélande. In: Dumont d'Urville, J. Voyage de découvertes de l'Astrolabe. Botanique. Tastu, Paris.
Short, P.S. 1979: Apium L. sect. Apium (Umbelliferae) in Australasia. Journal of the Adelaide Botanic Gardens 1: 205–235.