Difference between revisions of "Poa ammophila"
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|publications= | |publications= | ||
|common_names=Sand bluegrass | |common_names=Sand bluegrass | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Poa hartzii subsp. ammophila | |name=Poa hartzii subsp. ammophila | ||
| − | |authority= | + | |authority= |
| + | |rank=subspecies | ||
}} | }} | ||
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Poeae;Poa;Poa subg. Poa;Poa sect. Secundae;Poa subsect. Secundae;Poa ammophila | |hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Poeae;Poa;Poa subg. Poa;Poa sect. Secundae;Poa subsect. Secundae;Poa ammophila | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Poa ammophila | name=Poa ammophila | ||
| − | |||
|authority=A.E. Porsild | |authority=A.E. Porsild | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Sandy Long | ||
| + | |illustration copyright=Utah State University | ||
|distribution=N.W.T.;Yukon | |distribution=N.W.T.;Yukon | ||
|reference=None | |reference=None | ||
|publication title= | |publication title= | ||
|publication year= | |publication year= | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V24/V24_833.xml |
|subfamily=Poaceae subfam. Pooideae | |subfamily=Poaceae subfam. Pooideae | ||
|tribe=Poaceae tribe Poeae | |tribe=Poaceae tribe Poeae | ||
Latest revision as of 16:25, 11 May 2021
Plants perennial; glaucous; densely tufted, not stoloniferous, not rhizomatous. Basal branching intravaginal. Culms 10-30 cm. Sheaths closed for 1/7 – 1/6 their length, terete, bases of basal sheaths glabrous; ligules 1.5-3 mm; innovation blades similar to the cauline blades; cauline blades 1-3 mm wide, involute, moderately thick, soft, abaxial surfaces smooth, adaxial surfaces smooth or sparsely scabrous, apices narrowly prow-shaped. Panicles 3-6 cm, congested or moderately congested; nodes with (1)2(3) branches; branches 1-3(4) cm, erect, terete, smooth or sparsely scabrous. Spikelets 5-7 mm, lengths to 3.5 times widths, broadly lanceolate, weakly laterally compressed, fairly drab; florets 2-4; rachilla internodes usually 1-1.3 mm, smooth. Glumes lanceolate, distinctly keeled, keels smooth; lower glumes 3-veined; calluses glabrous; lemmas 3-4.6 mm, lanceolate, distinctly to weakly keeled, evenly and densely strigulose over the proximal 1/3-1/2, hairs mostly about 0.1 mm, some keel hairs to 0.2(0.3) mm, lateral veins obscure, margins broadly scarious, glabrous, apices acute; palea keels scabrous, softly puberulent at midlength, intercostal regions softly puberulent; anthers 1.5-1.8 mm. 2n = unknown.
Discussion
Poa ammophila is endemic to the Mackenzie River Delta region, Northwest Territories. It grows primarily north of treeline and, as its name indicates, usually on sandy soils. Its close relative, P. hartzii (see previous), also reaches the continental coastline in this region.
Selected References
None.