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Classification
Class
Family
Genus
Nomenclature
Scientific Name:
Clematis petriei Allan, Fl. New Zealand 1, 170 (1961)
Description
Evergreen woody liane, usually climbing over shrubs and small trees; dioecious. Stems up to 2 m long, 5-6 mm diam., ribbed and sparsely hairy when young, glabrous when mature, ascending or spreading. Leaves 3- foliolate, subcoriaceous to coriaceous, green. Leaflets 10-30 × 4- 18 mm. simple to pinnate; simple leaflets broadly ovate to ovate, entire, crenate to deeply pinnatifid; pinnae linear-oblong to broadly ovate; apices of leaflets and pinnae apiculate, bases sometimes oblique, attenuate to truncate; petioles and petiolules 10-25 mm long. channelled, glabrous to sparsely hairy, twining. Inflorescences axillary; flowers solitary, or 2-6 clustered in leaf axils, or in dichasia1 cymes of 5-10; flowers unisexual, 12- 35 mm diam. Pedicels 10-40 mm long, moderately to densely hairy; bracts 6.0- 14.0 × 1.7-6.0 mm, inserted about middle of pedicel, often foliaceous, connate, spathulate, often tinged red at base, abaxial surface sparsely to moderately hairy, adaxial surface ± glabrous to sparsely hairy, apex obtuse to rounded. Male tlowers: sepals 6-8, 5.5-20.0 × 1.7-9.0 mm, narrowly elliptic, elliptic, lanceolate to ovate, yellow-green, abaxial surface with pilose to villous hairs, adaxial surface glabrous or very rarely with a few scattered hairs, apex subacute to obtuse; stamens 14-24; filaments 1.8-7.4 mm long, c. 0.75 mm wide, glabrous, linear, often gradually tapering toward distal end or slightly at both proximal and distal ends; anthers 2.0-2.3 mm long, c. 0.6 mm wide, linear- oblong, cream; receptacle 0.5-0.6 mm high, 1.0- 1.1 mm wide, ± glabrous to moderately hairy; carpelodes absent. Female flowers: sepals 6-8.6.0- 15.0 × 3.5-5.0 mm, narrowly elliptic, elliptic, lanceolate to ovate, yellow-green, abaxial surface with pilose to villous hairs, adaxial surface glabrous, apex subacute to obtuse; carpels 30-39; ovary c. 1.2 × c. 0.4 mm, glabrous; style 4.4-5.3 mm long; pappus hairs 5 4 mm long, dense, white, ascending; stigma 0.4-2.7 mm long, curved, papillate on adaxial surface, abaxial surface smooth; receptacle 2.0- 2.2 mm high, 1.0- 1.1 mm wide, moderately hairy; staminodes 6-12, in outer whorl; filaments 4.0- 4.2 mm long; anthers c. 1.0 mm long, malformed, barren. Achenes 3.5-4.4 mm long, 1.5-2.3 mm wide, 1.0- 1.2 mm thick, glabrous, chesmut-brown; style 5-17.5 mm long, pappus hairs spreading, base of style usually glabrous. FL Oct-Jan; FT Dec-Mar.
[Reproduced from Heenan & Cartman (2000, New Zealand J. Bot. 38: 575-585) with permission from The Royal Society of New Zealand.]
Biostatus
Indigenous (Endemic)
Phenology
Flowering: Nov.–Dec.; Fruiting: Dec.–Jan.
Bibliography
de Lange, P.J.; Norton, D.A.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Hitchmough, R.; Townsend, A.J. 2009: Threatened and uncommon plants of New Zealand (2008 revision). New Zealand Journal of Botany 47: 61–96. [Naturally uncommon]
de Lange, P.J.; Norton, D.A.; Heenan, P.B.; Courtney, S.P.; Molloy, B.P.J.; Ogle, C.C.; Rance, B.D. 2004: Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 42(1): 45–76.
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. [Naturally Uncommon]
Heenan, P.B.; Cartman, J. 2000: Reinstatement of Clematis petriei (Ranunculaceae), and typification and variation of C. forsteri. New Zealand Journal of Botany 38(4): 575–585.
