Poa akmanii Soreng, P. Hein & H. Scholz, Willdenowia
Year: 2026
Type: article
Abstract: 1.Poa akmaniiSoreng, P. Hein & H. Scholz, Willdenowia 27: 196–197, f. 1. 1997. Type. Turkey • Isparta. Barladaği, Gelincikdağ, ca. 5 km W of Barla, 38.08 ° N, 30.45 ° E, 2,287 m, alpine, tall, shady, NE facing limestone cliffs, on mossy ledges protected from marauding goats, above snow field, 21 Aug 1993, R. J. Soreng, J. I. Davis, K. Güney et Ü. Bingöl 4140. (holotype: US [US 01106294]; isotypes: ANK, B [B 100365673], E, ISTE 101590 [rjs IMG _ 4806], LIV). Description. Perennials; hermaphroditic; basal tufts 5–10 cm tall, dense, small, delicate, not mat-forming, greyish green, usually violaceous in part, without rhizomes or stolons; tillers intravaginal; prophylls to 2 cm long, usually exerted from adjacent sheaths, keels antrorsely scabrous; bulbs present, slender fusiform, indistinct (up 2 mm wide), slightly thickened, few-veined, erect. Culms 5–16 cm tall, erect, included in the basal tuft or exerted, terete, internodes smooth, glabrous, 0 (– 1) nodes exerted, capillary; nodes ca 0.4 mm diam. Leaves mostly basal; leaf sheaths weakly compressed, strongly imbricated at base, smooth; basal sheaths 1–3 cm long, the outermost closely overlapping, membranous to thin papery, often persisting as a tunic, somewhat lustrous; flag-leaf sheath 2–3 cm long, margins fused 16–25 % the length, smooth, glabrous; throats and collars smooth, glabrous; ligules of culm leaves 3–6 mm long, scarious-hyaline to lightly watery-white, smooth, apices acute to narrowly acute, sometimes lacerate or deeply incised, of sterile shoots 1.5–4 mm, narrowly decurrent, smooth, glabrous; blades of the culms 2–4 cm long, 0.4–0.8 mm wide, subequal or those of the sterile shoots, gradually reduced upward, folded, thin, soft, margins slightly inrolled, surfaces smooth and glabrous, margins smooth or sparsely to moderately scabrous, apices narrowly prow-tipped, smooth, sterile shoot blades to 1–3 (– 4) cm long, slender, soon withering. Panicles 3–12 cm long, linear to narrowly ovate, somewhat lax, delicate, sparse, with 4–16 spikelets; proximal internodes 4–8 mm long; axis with 1 (– 2) branches per node; primary branches laxly ascending, terete to weekly sulcate or slightly angled, capillary, smooth or sparsely scaberulous, longest branches 0.3–1.2 cm, with 1–3 (– 5) spikelets in the distal 1 / 3–1 / 2; pedicels 1 / 3 to equaling the spikelet in length, smooth or sparsely scaberulous. Spikelets 3.5–4.5 mm long, lanceolate, laterally compressed, greenish, usually violaceous in part, bulbifery absent; florets 2–4; rachilla internodes exposed, 0.7–1 mm long above the proximal floret, smooth, glabrous; glumes subequal, narrowly lanceolate to lanceolate, distinctly keeled, distally sparsely scaberulous on keels and edges, or edges smooth, apices narrowly acute; lower glume 2.4–4.4 mm, (1 –) 3 - veined; upper glume 2–4.3 mm, 3 - veined; callus glabrous; lemmas 2.3–4.3 mm long, 3 or obscurely 5 - veined, lanceolate, slightly to strongly violaceous, distinctly keeled, keel to 3 / 4 and marginal veins to 1 / 2 the length sericate (hairs crisp, 0.15–0.3 mm long, bunt tipped), between veins glabrous or the upper ones very sparsely puberulent in the lower 1 / 3, distally keel moderately and sides and margins lightly scaberulous, intermediate veins obscure, distal margins narrowly hyaline, edges smooth or sparsely scaberulous, apices acute to narrowly acute, entire; palea keels scabrous in the distal 1 / 2, between keels smooth, glabrous. Flowers bisexual; lodicules 0.75–1 mm long, oblanceolate, with a lateral lobe inserted near the middle; anthers 0.9–1.4 mm long. Caryopses 1.5–1.8 mm long, lanceolate, laterally compressed, broadly sulcate, straw-colored, free from the palea; hilum 0.2 mm long, elliptical. 2 n = unknown. Clade code: Aa. Distribution and ecology. Turkey: Antalya (doubtful), Isparta. Alpine, shady limestone cliffs; in Turkey, 2,280 –2,340 m. Conservation status. Endemic, rare, known from three collections in two populations, 180 km apart. Probably Vulnerable based on criteria B 1 / B 2 a and D 2 ab. Threats are goat grazing and the predictable loss of alpine habitat due to climate change. No studies have been conducted to estimate population size, area occupied, or potential habitat area. The Type locality collections were made 30 years apart. Comments. The DNA sequence data came from topotype material *. RJS (Soreng et al. 1997) had not seen the paratype, and he misreported by its latitude as 38 ° rather than 36 °. The scrapy Hain paratype collection identified as this species by Scholz has the thin, lustrous sheaths of P. akmanii and seems to be the species. The online image of another collection determined as this species by Scholz, Parolly et al. 6498 [B 100270567], has sclerotia in florets of the right-hand plant appearing to be infected by nematodes (as annotated at B by someone) or fungus and seems not to be this species. Likewise, the left-hand plant appears feeble, with two large spikelets and a few malformed spikelets. Representative specimens. Turkey. Antalya (36.83306 ° N, 30.33944 ° E, Hein 92 - A 37 (p. p. 2 a) [B 10036574] [Image!]). Isparta (Type; and topotype, Soreng et al. 8248 *).
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W7225832145
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