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Simplicia laxa Kirk, Trans. New Zealand Inst. 29: 497, t.44 (1897)
Simplicia laxa Kirk
de Lange, P.J.; Smissen, R.D.; Rolfe, J.R.; Ogle, C.C. 2016: Systematics of Simplicia Kirk (Poaceae, Agrostidinae) – an endemic, threatened New Zealand grass genus. PhytoKeys 75: 119–144.

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Endemic
Wild
New Zealand
Political Region
de Lange, P.J.; Smissen, R.D.; Rolfe, J.R.; Ogle, C.C. (2016)

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Kirk
Kirk
Kirk, T. 1897: Description of a New Genus of Gramineae. Transactions of the New Zealand Institute 29: 497.
1897
497, t.44
ICN
Simplicia laxa Kirk
species
Simplicia laxa
Kirk (1897) did not explain the meaning of his species epithet ‘laxa’ though his intent is clear from his protologue where he describes the new species as having ‘weak, decumbent, flaccid’ culms. The epithet is derived from Latin ‘laxus’ meaning ‘loosely arranged’ as in ‘wide, loose’ structures or growth (Taylor 2002).
Lectotype. ‘Waikouaiti, Otago’ D. Petrie s.n., n.d. (WELT SP043017!) (fide Zotov 1971); Isolectotype. ‘Waikouaiti, Otago, D.Petrie s.n., n.d. (WELT SP043021!) (fide Zotov 1971).

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Plantae
Tracheophyta
Magnoliopsida
Poales
Gramineae
Simplicia
laxa

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Dawson, M.I. 2008: Index of chromosome numbers of indigenous New Zealand vascular plants.

Simplicia laxa Kirk

2n = 28
2n = 28
2n = 28
2n = 28
Edgar, E.; Connor, H. E. 2000: Flora of New Zealand Vol. V. Gramineae. Manaaki Whenua Press, Lincoln, New Zealand.

Simplicia laxa Kirk

Plants weak, 25-50 cm. Leaf-sheath membranous, strongly ribbed, pubescent, especially the light brown basal sheaths. Ligule 1-3 mm, erose, abaxially pubescent. Leaf-blade 6-10 cm × 1.5-2 mm, scabrid on ribs or smooth, adaxially sometimes shortly and sparsely pubescent; margins minutely scabrid. Culm internodes glabrous. Panicle 10-15 cm, ± pyramidal; rachis glabrous, branches ± scabrid, binate, spreading to reflexed, naked in lower ½, pedicels short, pubescent, ± appressed to branchlets. Spikelets 2.5-3 mm, 1-flowered, lanceolate, light green. Glumes glabrous, ovate-lanceolate to ovate, acute, margins ciliate; lower 0.5-0.7 mm, upper 0.8-1 mm. Lemma ≈ spikelet, shortly pubescent, 3-nerved or with 2 additional fainter lateral nerves, ovate-lanceolate, acute to mucronate. Palea 2-2.5 mm, 1-2-nerved, shortly pubescent, especially on nerves. Rachilla prolongation c. 0.5 mm, very minutely ciliate. Anthers c. 1 mm. Caryopsis c. 1.5 mm long. 2n= 28.
Zotov, V. D. 1971: Simplicia T. Kirk (Gramineae). New Zealand Journal of Botany 9: 539–544.

Simplicia laxa Kirk

Plant perennial, culms decumbent, weak, 25-50 cm long, with 5-6 internodes elongated, glabrous; internodes much longer than subtending leaf sheaths. Basal sheaths dark coloured, ± pubescent; ligule 2-5 mm long, membranous, rounded, erose, ± glabrous; leaf blade flat, narrow linear-lanceolate, 6-12 cm long, 1.5-3.0 mm wide, both surfaces smooth, adaxial ± pubescent, bands of bulbiform cells several, weakly developed. Panicle ± pyramidal, branches binate, spreading to reflex. Pedicels pubescent ± appressed to branches. Spikelets 1-flowered, lanceolate, c. 3 mm long. Glumes ovate-lanceolate to ovate, 1-nerved or upper 3 nerved; lower glume c. 0.7 mm long, upper c. 1.0 mm long. Lemma 2.5-3.0 mm long, ovate-lanceolate, acute, mucronate, 3 (faintly 5)- nerved, ± keeled, pubescent. Palea about as long as lemma, 1-2-nerved, pubescent. Lodicules c. 0.7 mm long, ovate lanceolate, often asymmetrically lobed. Stamens 2. anthers c. 1 mm long, filaments short. Caryopsis c. 1.5 mm long, laterally compressed. Somatic chromosomes 28.

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Simplicia laxa Kirk
Simplicia laxa Kirk
Dawson, M.I. (2008)
Simplicia Kirk
Simplicia laxa Kirk
Simplicia laxa Kirk
Dawson, M.I. (2008)
Simplicia Kirk
Simplicia laxa Kirk
Simplicia laxa Kirk
Dawson, M.I. (2008)
Simplicia Kirk
Simplicia laxa Kirk
Simplicia laxa Kirk
Dawson, M.I. (2008)
Simplicia Kirk
Simplicia laxa Kirk
Simplicia laxa Kirk
de Lange, P.J.; Norton, D.A. et al. (2004)
Simplicia laxa Kirk
Simplicia laxa Kirk
de Lange, P.J.; Norton, D.A. et al. (2009)
Simplicia laxa Kirk
Simplicia laxa Kirk
de Lange, P.J.; Rolfe, J.R. et al. (2013)
Simplicia laxa Kirk
Simplicia laxa Kirk
Simplicia laxa Kirk
de Lange, P.J.; Rolfe, J.R. et al. (2018)
Simplicia laxa Kirk
Simplicia laxa Kirk
Simplicia laxa Kirk
de Lange, P.J.; Smissen, R.D.; Rolfe, J.R.; Ogle, C.C. (2016)
Simplicia laxa Kirk
Simplicia laxa Kirk
Simplicia laxa Kirk
Edgar, E.; Connor, H. E. (2000)
Simplicia laxa Kirk
Simplicia laxa Kirk
Smissen, R.D.; de lange, P.J.; Thorsen, M.J.; Ogle, C.C. (2011)
Simplicia laxa Kirk
Simplicia laxa Kirk
Simplicia laxa Kirk
Zotov, V. D. (1971)
Simplicia laxa Kirk var. laxa
Simplicia laxa Kirk var. laxa
Edgar, E.; Connor, H. E. (2000)
Simplicia laxa Kirk

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Simplicia laxa Kirk
New Zealand
Canterbury Land District
10 Link to an external page
Simplicia laxa Kirk
New Zealand
Nelson Land District
1 Link to an external page
Simplicia laxa Kirk
New Zealand
Otago Land District
11 Link to an external page
Simplicia laxa Kirk
New Zealand
Wellington Land District
1 Link to an external page

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typification
Lectotype. ‘Waikouaiti, Otago’ D. Petrie s.n., n.d. (WELT SP043017!) (fide Zotov 1971); Isolectotype. ‘Waikouaiti, Otago, D.Petrie s.n., n.d. (WELT SP043021!) (fide Zotov 1971).
de Lange, P.J.; Smissen, R.D.; Rolfe, J.R.; Ogle, C.C. 2016: Systematics of Simplicia Kirk (Poaceae, Agrostidinae) – an endemic, threatened New Zealand grass genus. PhytoKeys 75: 119–144.
Etymology
Kirk (1897) did not explain the meaning of his species epithet ‘laxa’ though his intent is clear from his protologue where he describes the new species as having ‘weak, decumbent, flaccid’ culms. The epithet is derived from Latin ‘laxus’ meaning ‘loosely arranged’ as in ‘wide, loose’ structures or growth (Taylor 2002).
de Lange, P.J.; Smissen, R.D.; Rolfe, J.R.; Ogle, C.C. 2016: Systematics of Simplicia Kirk (Poaceae, Agrostidinae) – an endemic, threatened New Zealand grass genus. PhytoKeys 75: 119–144.

Click to collapse Metadata Info

65d158b8-c497-4386-b709-ac41ad7e9a62
scientific name
Names_Plants
1 January 2000
13 December 2016
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