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Section Phaestoglochin
See list of 10 species in this sectionReference: Ball (2002c).
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1a. Sheaths loosely clasping the stem, septate-nodulose (i.e., with cross-veins connecting the elongate veins of the sheath), green and white-striped or -spotted; widest leaf blades 4–10 mm wide
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2a. Inflorescence elongate, (3–) 4–10 cm long, with remote lower spikes; body of perigynium with a narrow wing 0.1–0.2 mm wide (sometimes narrower in the basal portion of the perigynium)
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2b. Inflorescence relatively congested, 2–4 cm long, with crowded lower spikes; body of perigynium with a very narrow wing up to 0.1 mm wide
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1b. Sheaths tightly clasping the stem, not septate-nodulose, usually not striped or spotted; widest leaf blades 0.9–4 (–5) mm wide
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3a. Beak of perigynium entire along the margins
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3b. Beak of perigynium minutely serrulate along the margins
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4a. Inflorescence open, with well-separated lower spikes; basal internodes of inflorescence 2 or more times as long as the lower spikes
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5a. Stigmas straight, reflexed, or partially coiled, 0.03–0.06 mm wide; spongy base of perigynium 1–1.5 mm long
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5b. Stigmas 1- to 3-times coiled, 0.05–0.1 mm wide; spongy base of perigynium 0.5–1.3 mm long
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6a. Widest leaves 0.9–1.5 mm wide; base of flowering stems 0.7–1.4 mm thick
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6b. Widest leaves 1.8–2.6 mm wide; base of flowering stems 1.5–2.2 mm thick
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4b. Inflorescence dense, with approximate to crowded spikes; basal internodes of inflorescence less than 2 times as long as the lower spikes
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7a. Body of carpellate scale 1–1.8 mm long, up to ½ the length of the perigynium it subtends; achenes 1.4–1.5 ×1.3–1.4 mm; inflorescence dense, the individual spikes not distinct
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7b. Body of carpellate scale 2.3–4.5 mm long, more than ⅔ the length of the perigynium it subtends; achenes 1.5–2.3 ×1.3–2.1 mm; inflorescence dense to somewhat elongate, the individual spikes distinct or not
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8a. Ligules (3.5–) 4–8 mm long, much longer than broad; perigynia 4–5.5 mm long; basal sheaths usually tinged with anthocyanin
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8b. Ligules up to 3 mm long, usually wider than long; perigynia 2.7–4.2 mm long; basal sheaths green to brown, without anthocyanic pigments
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9a. Inflorescence a dense, globose to ovoid cluster 1–1.5 times as long as wide, the individual spikes highly congested and sometimes not even distinct; perigynia weakly veined (if at all) on the abaxial surface; achenes 1.5–1.7 ×1.3–1.5 mm
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9b. Inflorescence elongate to rather congested, usually more than 1.5 times as long as wide, at least the lower spikes usually ± distinct; perigynia either with 9–15 veins on the abaxial surface or ± veinless; achenes (1.8–) 1.9–2.2 × (1.8–) 1.9–2.1 mm
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Each photo represents one species in this section.