Download Copy a link to this page Cite this record

Pentapogon lacustris (Edgar & Connor) de Lange & L.M.H.Schmid

Scientific name record
Names_Plants record source
Is NZ relevant
This is the current name
This record has collections
This record has descriptions
This is indigenous
Show more

Click to collapse Details Info

Pentapogon lacustris (Edgar & Connor) de Lange & L.M.H.Schmid, Ukr. Bot. J. 79: 75 (2022)
Pentapogon lacustris (Edgar & Connor) de Lange & L.M.H.Schmid

Click to collapse Biostatus Info

Endemic
Wild
New Zealand
Political Region

Click to collapse Nomenclature Info

(Edgar & Connor) de Lange & L.M.H.Schmid
Edgar & Connor
de Lange & L.M.H.Schmid
2022
75
ICN
species
Pentapogon lacustris

Click to collapse Classification Info

lacustris

Click to collapse Descriptions Info

Reddish green tufts 18—30 cm, with erect culm s topped by dense cylindric panicles and much exceeding the leaves at maturity; branching extravaginal. Leaf-sheath chartaceous, glabrous, light green to light reddish brown, nerves more prominent above. Ligule 2—3 mm, erose, often tapered centrally to a fine tip, abaxially smooth. Leaf-blade 2—9 cm × 1 .5— 2 mm, folded, abaxially smooth, adaxially slightly ridged, sparsely scabrid on ridges; margins finely scabrid; tip hooded. Culm 10—24 cm, erect or geniculate at base, nodes hidden by leaf-sheaths, internode s smooth. Panicle 1 .5—4.5 cm × 5—8 mm, cylindric, dense; rachis smooth, branches and pedicels rather sparsely finely scabrid. Spikelets 5–7 mm, purplish green. Glumes subequal, 1-nerved, submembraneous, elliptic-lanceolate, acute, smooth, kee l finely scabrid on upper 2/3. Lemma 4–5 mm, 4/5 length of glumes, subcoriaceous, smooth below, finely papillose to prickle-toothed above, ± elliptic, apex shortly bifid; awn 3 .5–4.5 mm, from upper ¼ of lemma, twisted about twice at base, ± curved out - wards above. Palea c. 2/3 length of lemma, hyaline, keels thickened, faintly prickle-toothed above. Callus hairs 0 .3–1 mm. Rachilla 0.5–1 mm, bearing minute hairs throughout except at glabrous tip. Lodicules 0 .4–0 .5 mm. Anthers 0.3–0.65 mm. Gynoecium: ovary 0.6 mm; stigma-styles 1.0– 1.5 mm. Caryopsis c. 2 × 0 .6 mm, with dehisced anthers entangled in stigmas. Cleistogamous. Endemic .
Gramen montanum in locis humidis crescens , panicula cylindrica Deyeuxiae quadrisetae et D. avenoidi simile, ab ambobus arista in superiore lemmatis parte exorienti, a D. quadriseta rachilla longiore, et a D. avenoide rachilla glabriore differt. Cleistogamum.
Reddish green tufts 18-30 cm, with erect culms topped by dense cylindric panicles and much exceeding the leaves at maturity; branching extravaginal. Leaf-sheath chartaceous, glabrous, light green to light reddish brown, ribs more prominent above. Ligule 2-3 mm, erose, often tapered centrally to a fine tip, abaxially glabrous. Leaf-blade 2-9 cm × 1.5-2 mm, folded, abaxially smooth, adaxially slightly ribbed, sparsely scabrid on ribs; margins finely scabrid, tip hooded. Culm 10-24 cm, erect or geniculate at base, nodes hidden by leaf-sheaths, internodes glabrous. Panicle 1.5-4.5 cm × 5-8 mm, cylindric, dense; rachis smooth, branches and pedicels rather sparsely finely scabrid. Spikelets 5-7 mm, purplish green. Glumes subequal, 1-nerved, submembranous, elliptic-lanceolate, acute, smooth, keel finely scabrid on upper ⅔. Lemma 4-5 mm, ⅔-⅘ length of glumes, subcoriaceous, smooth below, finely papillose to prickle-toothed above, ± elliptic, apex shortly bifid; awn 3.5-4.5 mm, from upper ¼ of lemma, twisted about twice at base, ± recurved above. Palea c. ⅔ length of lemma, hyaline, keels thickened, faintly prickle-toothed above. Callus hairs 0.3-1 mm. Rachilla prolongation 0.5-1 mm, bearing minute hairs throughout except at glabrous tip. Lodicules 0.4-0.5 mm. Anthers 0.3-0.65 mm. Gynoecium: ovary 0.6 mm; stigma-styles 1.0-1.5 mm. Caryopsis c. 2 × 0.6 mm, with dehisced anthers entangled in stigmas. Cleistogamous.

Click to collapse Taxonomic concepts Info

Click to collapse Collections Info

New Zealand
Canterbury Land District
New Zealand
Nelson Land District
Pentapogon lacustris (Edgar & Connor) de Lange & L.M.H.Schmid
New Zealand
Nelson Land District

Click to collapse Metadata Info

1f40af30-8e71-478f-b397-ec34ad37098e
scientific name
Names_Plants
18 April 2022
18 April 2022
Click to go back to the top of the page
Top