Cardamine depressa subsp. stellata (Hook.f.) Heenan

Based on: P.B. Heenan (2020)

Cardamine depressa subsp. stellata. Flowering plant with rosette leaves. Image: S.J. Wagstaff © Landcare Research 2019 CC BY 3.0 NZ

Classification

Class

Magnoliopsida Brongn.

Order

Brassicales Bromhead

Family

Cruciferae

Genus

Cardamine L.

Nomenclature

Scientific Name:

Cardamine depressa subsp. stellata (Hook.f.) Heenan, Phytotaxa 330: 65–66 (2017)

Synonymy:

≡ Cardamine stellata Hook.f., Bot. Antarct. Voy. I. (Fl. Antarct.) Part I, 7, t. 4a (1844)
≡ Cardamine depressa var. stellata (Hook.f.) Hook.f., Handb. New Zealand Fl. 12 (1864)

Lectotype (designated by Heenan 2017): Campbell’s Island, 1584, K!

Etymology:

The subspecific epithet stellata (Latin: radiating from centre) refers to the leaf arrangement, as Hooker (1844) refers to this in his diagnosis and description.

Description

Leaf lamina surface and margin and petiole sparsely to moderately hairy; hairs appressed to spreading, up to 0.9 mm long. Sepals sparsely to moderately hairy on abaxial surface; hairs spreading to patent, up to 0.8 mm long.

Distribution

Campbell Island.

Cardamine depressa subsp. stellata is only known from Campbell Island.

Cardamine depressa subsp stellata distribution map based on databased records at AK, CHR, OTA & WELT. Image: K.Boardman © Landcare Research 2018 CC BY 4.0

Habitat

Cardamine depressa subsp. stellata occurs on coastal cliffs, rocks at sea level, ridges, open peat, rock crevices and ledges, among rock debris, damp cliffs, and among scrub.

Biostatus

Indigenous (Endemic)

Cardamine depressa subsp. stellata is assessed as having a conservation status of At Risk Naturally Uncommon, with the qualifiers Data Poor, Island Endemic and One Location (de Lange et al. 2018). The qualifier Data Poor is applied as there is no information on the number and size of the populations.

Hybridisation

The putative hybrid C. depressa subsp. stellata × C. subcarnosa has been recorded (CHR 311526, Meurk & Given s.n.).

Phenology

Flowering November–March; Fruiting December–February.

Images

Cardamine depressa subsp. stellata. Rosette leaves. Image: S.J. Wagstaff © Landcare Research 2019 CC BY 3.0 NZ

Cardamine depressa subsp. stellata. Inflorescenece with mature siliques (CHR 49860). Image: P.B. Heenan © Landcare Research 2019 CC BY 3.0 NZ

Bibliography

Allan, H.H. 1961: Flora of New Zealand. Vol. I. Indigenous Tracheophyta: Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicotyledones. Government Printer, Wellington. [as Cardamine depressa var. stellata (Hook.f.) Hook.f.; Cardamine stellata Hook.f.]

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. [Naturally Uncommon]

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. [as Cardamine depressa var. stellata (Hook.f.) Hook.f.] [Not Threatened]

Heenan, P.B. 2017: A taxonomic revision of Cardamine L. (Brassicaceae) in New Zealand. Phytotaxa 330(1): 001–154.

Heenan, P.B. 2020: Cardamine. In: Wilton, A.D. (ed.) Flora of New Zealand - Seed Plants. Fascicle 6. Manaaki Whenua Press, Lincoln.

Hooker, J.D. 1844–1845: The Botany of the Antarctic Voyage of H.M. Discovery Ships Erebus and Terror in the Years 1839–1843, under the command of Captain Sir James Clark Ross. I. Flora Antarctica. Part I. Botany of Lord Auckland’s Group and Campbell’s Island. Reeve, Brothers, London.

Hooker, J.D. 1864: Handbook of the New Zealand Flora: a systematic description of the native plants of New Zealand and the Chatham, Kermadec's, Lord Auckland's, Campbell's and Macquarie's Islands. Part I. Reeve, London.

Kirk,T. 1899: The Students' Flora of New Zealand and the Outlying Islands. Government Printer, Wellington, N.Z. [as Cardamine stellata Hook.f.]

Webb, C.J.; Sykes, W.R.; Garnock-Jones, P.J. 1988: Flora of New Zealand. Vol. IV. Naturalised Pteridophytes, Gymnosperms, Dicotyledons. Botany Division DSIR, Christchurch. [as Cardamine depressa var. stellata (Hook.f.) Hook.f.; Cardamine stellata Hook.f.]