cascadensis = the Cascades at Betty's Bay, where the type of this species was collected.
WCM Protologue Reference:
(Pillans) H.P.Linder, Bothalia 15: 436 (1985)
Vegetative parts: plants tangled, 0.3–1 m tall, compact, without spreading rhizomes or stolons or with stolons. Fertile culms branching, compressed. Margins of compressed culms ribbed distinct rib present. Fertile culms smooth or finely rugulose, green, 0.3–1 m tall, diameter at base 1.5–3.5 mm, diameter at apex 1–1.6 mm. Branch axil indumentum absent or present. Sheaths persistent, with no abscission line, closely convoluted, 12–35 mm long, green, eventually turning gray-green, apical margins narrowly membranous, hyaline shoulders membranous margins continuing behind awn, hyaline shoulder 0.1 of sheath body length, apex, excluding the membranous lobes, acute. Sheath-mucro awl- or needleshaped, straight and erect, 3–8 mm long, sheath conduplicate, and the awn really the folded apex of the sheath. Males: male inflorescence with 2–5 spikelets, racemose, 25–70 mm long, 5–15 mm wide. Male inflorescence spathes caducous, taller than spikelets, coriaceous. Male flowers in spikelets. Male spikelets erect on stiff pedicels or sessile, oblong or ovate, apex rounded, 4–15 mm, 2–12 mm, with 4–12 flowers, pedicels absent ie spikelets sessile. Male bracts taller than flowers or more than twice as tall as flowers, 2–12 mm long, ovate, acute, chartaceous, bract upper margin like body of bract, bract awn minute or absent. Male flower 3–5 mm long. Male tepals sepals and petals the same rigidity, chartaceous, linear, inner and outer tepals the same length. Male outer lateral tepals conduplicate, keel sparsely villous. Anthers 1.5–2.5 mm long, exserted from the flowers. Pistillode present. Females: female inflorescence sparsely paniculate, 7–25 mm long, 5–15 mm wide, with 1 spikelet or 2–5 spikelets (mostly 1, rarely 2, never more). Female spathes as long as the spikelets, persistent, coriaceous. Female spikelet sessile, obovate, apex truncate, 5–15 mm long, with 1–3 flowers, with 0 sterile bracts. Female bracts taller than flowers or at least twice as long as flowers, 5–15 mm long, linear or ovate, acute, chartaceous or cartilaginous, apical margin like rest of bract, same as body of bract, awn minute or absent. Female flower 3.5–4.5 mm long, without a fleshy pedicel. Female tepals cartilaginous, keels of lateral sepals sparsely villous, midrib flush with the tepal body, apices acute, inner and outer whorls the same length. Female outer lateral tepals conduplicate, 3.5–4.5 mm long. Female odd outer tepal ovate, 3.5–4.5 mm long. Female inner tepals ovate, 3.5–4.5 mm long. Staminodes present. Styles feathery, white, 3. Style bases free. Ovary with 2 locules, dehiscent. Fruit: seed (0.8–)1.12(–1.36) mm long, (0.72–)1.01(–1.2) mm in diameter, shape in side view obovate, shape in diameter round in cross section, white.