Poa orizabensis 10 The ligule of the upper stem is sharp, 3–12 mm long, longer than the width of the leaf;. Flowers chasmogamous; lodicules 0.65–0.75 mm long, broadly lanceolate to ovate, with a short lateral lobe; stamens 1.3–2.3 mm long. 33% of length; throats and collars smooth, glabrous; ligules 0.5–3(–5) mm long, decumbent, abaxially smooth, glabrous, apices obtuse to truncate;
Flowers cleistogamous to chasmogamous; lodicules 0.45-0.5 mm long, broadly lanceolate to ovate, with 1 (rarely 2) short lateral lobe(s); anthers 0.6–1.1 mm long, elongate before dehiscence, often remaining in distal florets of a cambium. Plants mm long, 2–3 × as long, elliptic in lateral view, until mature, laterally compressed, not bulbiferous, green, shiny; flowers 2, lower hermaphrodite, often pistillate above; internodes rachilla terete, 0.2-0.3 mm long, smooth, glabrous;. Flowers; lodicules 0.5 mm long, narrowly lanceolate, unlobed; anthers 0.5–1.1 mm long, those of the upper flower waste or sometimes poorly formed but not much reduced.
Flowers chasmogamous; lodicules of pistillate plants 0.6-0.85 mm long, broadly lanceolate to ovate, with or without a short lateral lobe from below the center (lodicules rudimentary in staminate plants); anthers 2–3.2 mm long, or all rudimentary and 0.1–0.2 mm long. Caryopses 2-2.5 mm long, elliptical in lateral view, subtrigonal in cross section, honey brown, sulcus broad and shallow, hilum 0.25 mm long, rounded, granular on the palea. Leaf collars are often scabby or herbaceous near the throat; ligules of the middle stem leaves 0.2-1.5 mm long, not tapering, abaxially smooth or crusty, upper margin crusty or ciliolate or glabrous, apices truncated; sterile bracts often adaxially glabrous.
Leaf collars smooth to sparse near throat; ligules of middle bracts mm long, decumbent, abaxially smooth or slightly lax, upper margin usually smooth, glabrous, apices obtuse to acuminate; blades of sterile shoots usually curled or softly puberulent adaxially.
2.5 × longer than its blade; pharynx and collars smooth or slightly scaly, glabrous; ligules up to 1–0.5(–7) mm long, decumbent, scarious. 33% of their length; throats and collars smooth, glabrous; ligules 0.5–3 mm long, decumbent, abaxially smooth, glabrous, apices obtuse to truncate; leaflets 1–7 cm long, 1–3(–4) mm wide, flat or slightly wrinkled, thin, soft. Flowers cleis-togamous to weakly chamogamous; lodicules 0.15–0.2 mm long (upper ones sometimes rudimentary); Stamens 0.1–0.55 mm long, more or less globose to shortly elliptic before dehiscing, distal floral sometimes remnant.
Spikelets 4–5 mm long, broadly lanceolate to lanceolate, laterally compressed, not bulbous, light green, slightly anthocyanic; florets (1–)2, hermaphroditic; rachilla internodes to 1 mm long (extension to 1.5 mm), glabrous, glabrous;. Flowers chasmogamous; lodicules 0.75 mm long, broadly lanceolate, apex acute, with a well-developed lateral lobe; anthers 1.6–2 mm long, sometimes poorly formed. Flowers chasmogamous; lodiculi 0.5 mm long, lanceolate, with a narrow lateral lobe; anthers 1.6-2.8 mm long, sometimes late abortive, rarely rudimentary in the individual plants.
Spikelets lanceolate, not bulbous; glumes unequal, glaucous or not; lower glumes 1(–3)-veined; upper lemma shorter than or nearly equal to lowest lemma; lemmas 2–3(–3.5) mm long, finely muriculate, midribs glabrous; paleas scabrous, medially smooth over keels, intercostal region smooth. Leaves of cauline leaves flag leaves leaves usually folded, thin, soft; sterile bracts less than 15 cm long, 1-3.6 mm wide, flat or folded, usually sparsely pubescent adaxially. Spikelets narrowly lanceolate, not bulbous; glumes unequal, rarely glaucous; lower glumes 1(–3)-veined; upper lemma shorter than or equal to lowest lemma; lemmas 2.5–3.5 mm long, finely muriculate, midveins glabrous; paleas scabrous, medially smooth over keels, intercostal region smooth.
Tongues of the lower culm and tiller leaves are usually abaxially hairy; blades of cauline leaves flag leaf blades flat, thin, soft; sterile shoot blades, usually less than 15 cm long, 2-4.5 mm wide, usually adaxially glabrous. Spikelets lanceolate to broadly lanceolate, not spherical; husks undersized, often glassy; lower husks (1–)3-veined; upper husks are usually below the lowest lemma; lemmas 3–6(–6) mm long, finely muricular, interveins glabrous; Spikelets lanceolate to broadly lanceolate, not spherical; husks uneven to undersized, rarely glassy; lower husks 1-3 veined; upper husks shorter than or almost below the lowest lemma; lemmas 2.8-4.3 mm long, finely muricular, interveins glabrous; paleas scabby, medially glabrous over keels, intercostal area glabrous.
Leaf sheaths compressed, keel not winged, glabrous or slightly to moderately scabrous (to densely scabrous); buttock sheaths papery, smooth, glabrous; flag leaf sheaths 5.8–15.2 cm long, margins fused 40–54% of their length; collar edges smooth or slightly oblique, smooth or ciliate; ligules 1.25–3.0 mm long, abaxially scabrous or sometimes glabrous; tips obtuse or sometimes acute, sterile shoots and lower culm ligules ca. 0.5–1 mm long, adaxially usually densely scabrous, apically usually densely scabrous margined; blades 2–17 cm long, 2–5 mm wide, flat or folded, edges sometimes be-. Flowers mostly cleistogamous or weakly chasmogamous; lodiculi 0.5 mm long, lanceolate with a distinct narrow lateral lobe near the middle; anthers 0.4–0.7 mm long.
Flowers chasmogamous; lodicules 0.55–0.8 mm long, broadly lanceolate, with a well-developed lateral lobe almost equal to the main lobe; stamens 1.5–3 mm long. The flowers are weakly pubescent; lodicules 0.4 mm long, lanceolate to broadly lanceolate, without lobe; stamens 0.4–0.8 mm long. Flowers chasmogamous; lodicules 0.4 mm long, ovate; anthers 2.2–2.5 mm long, often aborted late in development and 1–2 mm long (functionally pistillate).
