S, moderately firm, and of fairly uniform width; the adaxial surfaces

Boivin D. L e, Naturaliste Canad. 87(6?): 176?80, f. 1?. 1960. Variety: Canada, Manitoba, MacDonald Co, six Jun 1952, B.Boivin, L e Alex 9167 (holotype DAO!; J i2 i3 i4 i5 i6 i7 . . . 0 six i2 i3 i4 i isotype: US-2553819!). Description. Tufts sparse, some shoots clustered; pale green or bluish-gray-green; title= 2152-7806.162550 tillers intra- and extravaginal. Culms 20?0(?0) cm tall. Ligules of reduce culm and tiller leaves usually glabrous abaxially; lades of cauline leaves flag leaf blades folded, with involute margins, moderately thick, moderately firm; sterile shoot blades usually less than 10 cm long, 0.eight? mm wide, all folded with involute margins, sparsely pubescent adaxially. Panicles four?(?) cm extended, erect or nodding, or loosely contracted or open, ovoid to narrowly pyramidal; rachis with two?(?) branches per node; principal branches steeply ascending to ascending, smooth or sparsely to moderately densely scabrous; longest 1?.five(?) cm, with several spikelets per branch. Spikelets lanceolate, not bulbiferous; glumes unequal, gla.S, moderately firm, and of fairly uniform width; the adaxial surfaces, no less than in the vegetative shoot blades with sparse, elongated, weakly-appressed hairs; abaxial veins of intravaginal shoot blades slender to thick, narrower to broader than the intercostal surfaces; plants widespread .........................................................three Blades ca. (0.eight? 1? mm wide (expanded), the longer vegetative shoot blades short significantly less than ten (?5) extended; panicles contracted, branches smooth title= journal.pone.0133807 or sparsely scabrous; plants of mountain meadows, open forests, and subalpine ........................................................16a. Poa pratensis subsp. agassizensis Blades 0.4? mm wide (expanded), the longer vegetative shoot blades frequently exceeding 10 cm extended; panicles loosely contracted to open, branches usually scabrous; plants of pastures, waste ground .................................................... ........................................................16c. Poa pratensis subsp. angustifolia Extravaginal shoot blades relatively slender (1? mm wide), normally folded; vegetative shoots mostly isolated; panicles narrowly pyramidal, branches mainly smooth or sparsely scabrous, spikelets three?.5 mm extended ; plants of subalpine to alpine ....................................................16b. Poa pratensis subsp. alpigena Extravaginal shoot blades generally broader (two? mm wide), flat or folded, normally lax; vegetative shoots isolated or crowded; panicles pyramidal to broadly pyramidal, branches somewhat sparsely to pretty densely scabrous; spikelets four? mm long; plants of lawns and parks and waste ground to low alpine .....five Glumes subequal, often pruinose, reduce title= s12936-015-0787-z glumes (1) 3-viened, equivalent in shape to the upper glume, upper glumes typically equal towards the lowest lemma in length; panicles pretty sparsely flowered; collar margins and ligule abaxial surfaces frequently pubescent ................16d. Poa pratensis subsp. irrigata Glumes unequal, infrequently pruinose, decrease glumes 1 (3)-veined, narrower than the upper glume, upper glumes normally shorter than lowest lemma; panicles moderately densely flowered; collar margins and ligule abaxial surfaces typically glabrous ................................... 16e. Poa pratensis subsp. pratensis?????Robert J. Soreng Paul M. Peterson / PhytoKeys 15: 1?04 (2012)16a. Poa pratensis subsp. agassizensis (B. Boivin D. L e) Roy L. Taylor MacBryde, Canad. J. Bot. 56(two): 193. 1978. http://species-id.net/wiki/Poa_pratensis_agassizensis Fig. 17 A Poa agassizensis B. Boivin D. L e, Naturaliste Canad. 87(6?): 176?80, f. 1?. 1960. Form: Canada, Manitoba, MacDonald Co, 6 Jun 1952, B.Boivin, L e Alex 9167 (holotype DAO!; isotype: US-2553819!). Description. Tufts sparse, some shoots clustered; pale green or bluish-gray-green; title= 2152-7806.162550 tillers intra- and extravaginal. Culms 20?0(?0) cm tall.