Esterhuysen, E.E. = the foremost collector from the Cape mountains, who made Restionaceae her speciality. She collected actively from 1930 to 1990, and contributed more to our knowledge of the Cape flora than any other collector. Her meticulous collections, assembled to reflect the distribution range and morphological variability of each species, are currently housed at the Bolus Herbarium.
WCM Protologue Reference:
H.P.Linder, Bothalia 40: 28 (2010)
Vegetative parts: plants tufted, 0.16–0.45 m tall, basal diameter 0.1–0.3 m, crown diameter 0.2–0.4 m, compact, without spreading rhizomes or stolons. Fertile culms unbranched, round (not compressed), solid or with a small central cavity, smooth, olivaceous, 0.15–0.45 m tall, diameter at base 1–2 mm, diameter at apex 1–1.5 mm. Sheaths more than 1 per culm, persistent, with no abscission line, loosely convoluted, 20–40 mm long, orange to reddish brown, apical margins narrowly membranous or broadly membranous, hyaline shoulders absent or membranous margins continuing behind awn, hyaline shoulder 0.1 of sheath body length, apex, excluding the membranous lobes, acuminate or acute. Sheath-mucro hair-like, straight and erect, 2–8 mm long, Broad, pale spreading sheaths are characteristic of this group of species. Males: male inflorescence with 2–5 spikelets or 6–10 spikelets, paniculate (but very compact, tending to globose) or globose, 20–30 mm long, 10–20 mm wide. Male inflorescence spathes persistent, as tall as spikelets or taller than spikelets, coriaceous, mostly overtopping spikelets, usually largely enclosing them. Male flowers in spikelets. Male spikelets erect on stiff pedicels or sessile, elliptical, apex acute or undifferentiated, 7–13 mm, 2–4 mm, with 10–40 flowers, pedicels absent ie spikelets sessile (spikelets clustered at the inflorescence nodes). Male bracts taller than flowers, 5–11 mm long, ovate, acuminate, coriaceous, bract upper margin membranous, thinner texture than the body, bract awn between half and as long as the bract body or longer than the bract body, distinctive recurved acuminate awns. Male flower 4.5–6 mm long. Male tepals sepals more rigid than petals (slightly due to strengthening of midrib), chartaceous, petals chartaceous, oblong or elliptical (outer tepals tend to be oblong while inner ones are usually elliptical), inner and outer tepals the same length. Male outer lateral tepals conduplicate, keel sparsely villous or keel densely villous (odd sepal sometimes also villous). Anthers 1.8–3 mm long, exserted from the flowers. Pistillode absent. Females: female inflorescence with 1 spikelet. Female spathes shorter than the spikelets or as long as the spikelets, persistent, coriaceous. Female spikelet sessile, elliptical or ovate, apex rounded or obtuse or acute, 14–23 mm long, with 10–30 flowers, with 0–1 sterile bracts. Female bracts taller than flowers, reflexed, 8–14 mm long, ovate, acuminate, coriaceous, apical margin like rest of bract or membranous, same as body of bract, margins entire, awn less than half as long as the bract body or between half and as long as the bract body. Female flower 5–7 mm long, without a fleshy pedicel, six tepals. Female tepals cartilaginous, keels of lateral sepals densely villous, midrib flush with the tepal body, margins entire, apices acute, inner and outer whorls the same length or inner whorl shorter than outer (inner whorl may be slightly shorter than outer). Female outer lateral tepals conduplicate, 5–7 mm long. Female odd outer tepal oblong or ovate, 5–7 mm long. Female inner tepals ovate, 4–6.5 mm long. Staminodes absent. Styles feathery, 2. Style bases fused to form a pillar. Ovary with 2 locules, dehiscent. Fruit: seed 2.1 mm long, 1.1–1.2 mm in diameter, shape in side view elliptical, shape in diameter round in cross section or somewhat flattened in cross section, silvery or white (and shiny), pitted.