What’s a dichotomous key?
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- Group 1Lycophytes, Monilophytes
- Group 2Gymnosperms
- Group 3Monocots
- Group 4Woody angiosperms with opposite or whorled leaves
- Group 5Woody angiosperms with alternate leaves
- Group 6Herbaceous angiosperms with inferior ovaries
- Group 7Herbaceous angiosperms with superior ovaries and zygomorphic flowers
- Group 8Herbaceous angiosperms with superior ovaries, actinomorphic flowers, and 2 or more distinct carpels
- Group 9Herbaceous angiosperms with superior ovaries, actinomorphic flowers, connate petals, and a solitary carpel or 2 or more connate carpels
- Group 10Herbaceous angiosperms with superior ovaries, actinomorphic flowers, distinct petals or the petals lacking, and 2 or more connate carpels
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- Dichotomous Key
- Cyperaceae
- Carex
- Carex Group 7
- Section Careyanae
Section Careyanae
See list of 5 species in this sectionReference: Bryson and Naczi (2002a).
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1a. Sheaths anthocyanic at the base, those borne from the lower half of the flowering stem with blades up to 1.9 cm long [Fig. 74]
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1b. Sheaths white to brown at the base, those borne from the lower half of the flowering stem producing blades 2–24 cm long
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2a. Foliage strongly glaucous; leaves dimorphic—those of the vegetative shoots 10–25 mm wide, those of the flowering stems 2–6 mm wide, the former 3.8–9 times as wide as the latter; leaves from the lower half of the flowering stem with blades 2–6.2 cm long
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2b. Foliage green or glaucous; leaves slightly dimorphic if at all, 1–12 mm wide, those of the vegetative shoots 1–3.5 times as wide as those of the flowering stem; leaves from the lower half of the flowering stem with blades 4.5–24 cm long
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3a. Staminate spikes 0.6–1.4 (–1.6) mm wide; staminate scales obtuse at the apex, the middle ones 2.6–3.6 (–3.8) mm long; vegetative shoots much taller than the flowering stems
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3b. Staminate spikes (1–) 1.2–2.7 mm wide; staminate scales acute at the apex, the middle ones 3.6–5.5 mm long; vegetative shoots shorter than to slightly taller than the flowering stems
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4a. Lower 1–3 scales of the carpellate spikes empty or subtending staminate flowers only [Fig. 73]; leaves of the vegetative shoots 3–11.8 mm wide, glaucous; lower spikes 4–6 mm thick
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4b. All scales of the carpellate spikes subtending carpellate flowers; leaves of the vegetative shoots 1–5.3 mm wide, green; lower spikes 3–4 mm thick
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Show photos of: Each photo represents one species in this section.