Hierochloe redolens var. redolens

Lema-Suárez, Irene, Sahuquillo, Elvira & Pimentel, Manuel, 2021, A revision of Hierochloe sect. Monoecia (Anthoxanthinae, Pooideae, Poaceae), Phytotaxa 478 (1), pp. 92-104 : 98-99

4.1. Hierochloe redolens var. redolens .

Melica magellanica Desrousseaux in Lamarck (1797: 72). Holotype: P00661598 digital image! Hierochloe magellanica (Desrousseaux) Hooker (1846: 92) . Hierochloe redolens var. magellanica (Hooker) Macloskie (1904: 167) .

Hierochloe arenaria Steudel (1855: 416) . Syntype: S05-11189 digital image!.

Hierochloe moorei De Paula (1974: 393) . Holotype: BAB00000235 digital image!.

Hierochloe sorianoi De Paula (1974: 396) . Holotype: BAA00000184 digital image!.

Description: Caespitose plants; stems (25)40–100(300) cm; nodes in the culm glabrous. Leaf-blades 15–55 cm × 5–12 mm, flat, deeply ridged, scabrous adaxially and glabrous abaxially. Panicle (5)7–20(25) × 0.7–5 cm, open, lanceolate, without spikelets in the lower third. Pedicels shorter than the spikelets, pubescent. Spikelets 6.5–14 mm, cuneate. Glumes lanceolate. Glumes longer than the spikelet. Lower glume 5–12 mm, 1-veined; upper glume 4–14 mm, 3- veined. Lemma of male florets 5.5–10 mm, elliptic or oblong, membranaceous, scaberulous, ciliolate on margins, obtuse. Awn 2-6-mm, subapically inserted. Lemma of apical female floret membranaceous, glabrous in the lower part and scabrous in the upper part. Muticous or awned, but awn always shorter than 1 mm.

Leaf anatomy: Stomata 20–50 μm, in the adaxial surface. Hooks present. Leaf section closed with 20–40 quadrangular ribs.

Habitat: Wet meadows, 0–3850 m a.s.l. ( De Paula 1975, Sede 2012).

Distribution: Disjunct distribution in South America. From Venezuela to Peru and from central Chile and Argentina to Falkland Islands. Tropical-alpine at low latitudes ( De Paula 1975, Sede 2012).

Genome size and DNA-ploidy levels: 2C = 18.34–20.42 pg, 6 x.

Phenology: October–April.

Specimens examined:— ARGENTINA. Tierra del Fuego, Antártida e Islas del Atlántico Sur: Tierra del Fuego: Herberton: Moat, 28 December 2008, P. Catalán s.n. (SANT-76647, SANT-76649). Tierra del Fuego: Lake Roca, 3 January 2009, P. Catalán s.n. (SANT-76648). Tierra del Fuego, 1774 (C-10017002).— CHILE. Magallanes and Chilean Antarctica Region: Lago Roca, 3 January 2009, P. Catalán s.n. (SANT-65929). Porvenir: Cape Boqueron, slope at the edge of the road, 29 m, S 53º 28.150’ W 070º 14.122’, 19 January 2014, E. Sahuquillo & M. Pimentel s.n. (SANT-73533). Cameron: Cape Cameron: Inutil Bay, shrub and coastal pasture on cliff, 28 m, S 53º 39.500’ W 069º 44.476’, 19 January 2014, E. Sahuquillo & M. Pimentel s.n. (SANT-73534). Cameron: Cape Cameron, pasture grazed by cattle near the cliff, 25 m, S 53º 39.245’ W 069º 42.729’, 19 January 2014, E. Sahuquillo & M. Pimentel s.n. (SANT-73532). Torres del Paine N.P.: above Lake Grey, Nothofagus pumilio open forest with Escallonia, Gaultheria, Berberis , etc. shrubs, 56 m, S 51º 07.460’ W 073º 07.785’, 21 January 2014, E. Sahuquillo & M. Pimentel s.n. (SANT- 73535).— PERU. Department of Ancash: Yungay Prov.: Huascaran N.P., between Lake Llanganuco and Portachuelo, grassland with a few scattered shrubs, 4420–4620 m, S 9º 03’ W 77º 36’, 16 August 1984, D.N. Smith s.n. (US- 3097904). Department of Cajamarca Province: Cajamarca Province: road from Cajamarca to Bambamarca, on side road to Chugur (101 km from Cajamarca), grass paramo with scattered patches of scrub forest, 3550 m, 20 March 1988, S.A. Renvoize, S. Laegaard & I. Sánchez Vega s.n. (US-3480791).