Class
Order
Family
Genus
Classification
Nomenclature
Scientific Name:
Lachnagrostis striata (Colenso) Zotov, Rec. Domin. Mus. 5: 142 (1965)
Synonymy:
- ≡ Agrostis striata Colenso, Trans. & Proc. New Zealand Inst. 21: 107 (1888 [1889])
- = Deyeuxia forsteri var. humilior Hack. in Cheeseman, Man. New Zealand Fl. 869 (1906) nom. illeg.
Description
Tufts perennial, usually fine-leaved and low-growing, 5–15–(40) cm; branching extravaginal. Leaf-sheath membranous, sparsely ribbed, smooth, rarely minutely scabrid, green to light brown. Ligule 1–3–(5.5) mm, ± oblong, sometimes slightly tapered, denticulate, abaxially sparsely prickle-toothed. Leaf-blade (1)–2–10 cm × 0.8–2 mm wide, usually folded and appearing narrower, abaxially smooth except near tip, adaxially scabrid on prominent ribs; margins scabrid, tip subobtuse. Culm 1.5–15–(30) cm, erect or ascending, longer culms often projecting beyond uppermost sheaths, internodes minutely, retrorsely scabrid. Panicle 2–10–(20) × 1.5–7–(12) cm, delicate, rather contracted at first, later lax; branches few, filiform, finely scabrid, tipped by 1-few spikelets. Spikelets (2)–2.2–3.5 mm, green to purplish. Glumes subequal, acute, scabrid on midnerve in upper ½ or almost throughout, hyaline margins with a very few prickle-teeth near tip; lower slightly longer, linear-lanceolate, upper elliptic-lanceolate. Lemma 1.2–2–(2.3) mm, ⅔-¾ length of glumes, usually densely covered by stiff, straight hairs, ovate-oblong, truncate, lateral nerves scarcely excurrent; awn 0.2–2–(3) mm, straight, very fine, often purple, from upper ⅓ of lemma. Palea c. ⅔ to ≈ lemma, keels c. 0.1 mm apart, slightly excurrent, apex minutely bifid, sparsely prickle-toothed. Callus ringed with short hairs to c. 0.3 mm, c. ¼ length of lemma. Rachilla c. 0.5 mm, tipped by equally long, or slightly longer hairs. Lodicules c. 0.3 mm, linear, acute. Anthers 0.2–0.5–(0.6) mm. Caryopsis 0.8–1.4 × 0.4–0.6 mm.
[From: Edgar and Connor (2000) Flora of New Zealand. Volume 5 (second printing).]
Biostatus
Indigenous (Endemic)
Bibliography
Cheeseman, T.F. 1906: Manual of the New Zealand Flora. Government Printer, Wellington.
Colenso, W. 1889: A description of some newly-discovered Phænogamic plants; being a further contribution towards the making known the botany of New Zealand. Transactions and Proceedings of the New Zealand Institute 21: 80–108.
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]
Edgar, E. 1995: New Zealand species of Deyeuxia P.Beauv. and Lachnagrostis Trin. (Graminieae: Aveneae)*. New Zealand Journal of Botany 33: 1–33.
Zotov, V.D. 1965: Grasses of the Subantarctic Islands of the New Zealand Region. Records of the Dominion Museum, Wellington 5: 101–146.
