Class
Order
Family
Genus
Classification
Nomenclature
Scientific Name:
Poa incrassata Petrie, Trans. & Proc. New Zealand Inst. 34: 394 (1902)
Synonymy:
- ≡ Poa kirkii var. incrassata (Petrie) Zotov, Trans. Roy. Soc. New Zealand 73: 236 (1943)
- = Poa exigua Hook.f., Handb. New Zealand Fl. 338 (1864) nom. illeg., non Poa exigua Dumort. 1823
Description
Small perennial tufts, 5–15 cm, narrow, glaucous; branching extravaginal at plant base, intravaginal above; leaf-blades persistent. Leaf-sheath shining, greenish or reddish purple, later light grey-brown, membranous, glabrous, ribs conspicuous. Ligule 0.2–0.7 mm, apically glabrous, entire, rounded or sometimes centrally narrowed to a point, abaxially minutely papillose. Leaf-blade 1–6–(9) cm × 0.6–2 mm, usually folded, abaxially smooth, but scabrid on midrib near curved tip, adaxially glabrous, but shortly hairy above ligule and occasionally with a few prickle-teeth on midrib, lateral ribs indistinct; margins inrolled, shortly prickle-toothed. Culm 2–9–(16) cm, internodes often closely short-scabrid below panicle or smooth. Panicle 0.5–2.5–(3) cm, compact, spike-like or racemose, very rarely more open with few, very short branches; rachis and branches stiff, angular, ± densely scabrid, spikelets few on scabrid pedicels. Spikelets 2.5–3.5 mm, 2–3–(4)-flowered, light green tinged purple. Glumes subequal, usually 1.5–2.5 mm, glabrous, with a few prickle-teeth on nerves in upper ½; lower occasionally smaller, 1–1.5 mm, 1–(3)-nerved, narrow- to ovate-elliptic, subobtuse to obtuse, upper 3-nerved, ovate, obtuse. Lemma c. 2–2.5 mm, 5–(7)-nerved, ovate, strongly folded about midnerve, obtuse, sometimes almost hooded, minutely papillose or occasionally minutely scabrid near distinct membranous margin, midnerve scabrid towards tip. Palea 1.5–2.3 mm, keels scabrid on upper ½, interkeel and flanks glabrous. Callus glabrous. Rachilla c. 0.5 mm, glabrous; prolongation usually twice as long. Lodicules 0.4–0.5 mm. Anthers 0.2–0.5 mm. Gynoecium: ovary 0.4–0.5 mm; stigma-styles 0.75–1.1 mm. Caryopsis 1–1.3 ×c. 0.5 mm.
[From: Edgar and Connor (2000) Flora of New Zealand. Volume 5 (second printing).]
Biostatus
Indigenous (Endemic)
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. [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. [Naturally Uncommon]
Edgar, E. 1986: Poa L. in New Zealand. New Zealand Journal of Botany 24: 425–503.
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.
Petrie, D. 1902 ("1901"): Descriptions of New Native Plants, and Notes. Transactions and Proceedings of the New Zealand Institute 34: 390–396.
Zotov, V.D. 1943: Certain Changes in the Nomenclature of New Zealand Species of Gramineae. Transactions of the Royal Society of New Zealand 73: 233–238.
