Stipa letourneuxii var. ignea F. M. Vazquez. 2025

Stipa letourneuxii var. ignea (F.M. Vázquez) F.M.Vázquez. (Figure 63 (2)). Lemma dorsal surface: Characterised for rectangular long cells of 20–42(–60) × 18–24 µm, smooth walls up to 10 µm thick, linear distribution. Short cells: main Silica cells 8–12 × 14–19 µm, circular to oblong, sporadic, more frequent at margin, in all cases forming pairs or threes with hook cells, situated between long cells, never solitary; Cork cells not studied. Spines and hairs: Hooks circular base 15–26 × 7–10(–11) µm high, regularly distributed between long cells, in pairs or threes with silica, or additional hook cells, more frequent solitary, density 7–12 hooks/100 µm 2; Prickles not studied; Macro-hairs up to 470 µm long, circular base 18–21 µm, regularly distributed in lines from base to mid-dorsal surface. Lemma apical surface: Characterised by long cells similar to those of the dorsal area, slightly thinner 8–14 µm. Short cells: Silica cells equal in size and morphology to the dorsal, more frequent; Cork cells 8–10 × 18–20 µm oblong, sporadic, in all cases together with silica and occasionally hook cells. Spines and hairs: Hooks equal in size, and morphology to the dorsal, irregular in distribution and at a higher density 11–14 hooks/100 µm 2; Prickles circular to ovate base, 28–33 × 26–36 µm, 50–120 µm long, distributed in middle and distal parts of apex, up to 3 prickles/100 µm 2; Macro-hairs similar in size and morphology to dorsal, but slightly bigger base 19–27 µm, and shorter macro-hairs up to 180 µm located mostly at distal part of apex. Material studied: Morocco: Iber, -510240/3284224, 1730 m.s.a.l., 7-VI-2018, M. Chambouleyron (ECWP s.n. (HSSrf 153)); Jerada, -214586/ 3422094, 920 m.s.a.l., 4-VI-2018, M. Chambouleyron (ECWP s.n. (HSSrf 148 (1/2/3).