Carex praeceptorum Mackenzie in N. L. Britton et al. (Q199)

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Carex praeceptorum is a taxon with the rank species within the section Carex sect. Glareosae
Language Label Description Also known as
English
Carex praeceptorum Mackenzie in N. L. Britton et al.
Carex praeceptorum is a taxon with the rank species within the section Carex sect. Glareosae

    Statements

    taxon/id/Carex praeceptorum Mackenzie
    0 references
    Carex praeceptorum Mackenzie
    Carex praeceptorum
    Mackenzie
    FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
    accepted
    carex des professeurs (French)
    teacher's sedge (English)
    early sedge (English)
    2300–3500 m
    Plants loosely or densely cespitose, in small clumps;
    Culms usually erect, slender, 10–20 (–30) cm.
    Leaves: sheaths pale-brown abaxially, inner band thin, hyaline, sometimes red tinged, concave at summit;
    ligules as long as wide;
    blades pale to gray-green, flat, 5–15 cm × 1.5–2.5 mm, shorter than culms, thin.
    Inflorescences 1–1.5 (–2) cm × 5–10 mm;
    proximal bracts bristlelike, prolonged, distal bracts scalelike.
    Spikes 3–5, gynecandrous, approximate, sessile, containing 8–15 (–20) perigynia;
    terminal spike staminate for less than 1/2 of length, shortly clavate, oblong-ovoid, 4–7 × 3–5 mm.
    Pistillate scales light chestnut-brown with lighter center and hyaline margins, ovate, subequal to perigynia, apex obtuse.
    Perigynia appressed-ascending, pale-brown, often darker brown in age, finely several-veined, elliptic-ovate, 1.5–2 × 1 mm, widest near middle, membranous;
    beak short, entire or slightly serrulate.
    Achenes pale-brown, broadly obovate, 1.25 × 0.8–1 mm, dull to slightly glossy.