Macrochloa gabesensis subsp. gabesensis F. M. Vazquez

Macrochloa gabesensis subsp. gabesensis (Moraldo, Raffaelli & Ricceri) F.M. Vázquez (Figure 52 (1)). Lemma dorsal surface (including base): Characterised by rectangular long cells of (42–) 60–105(–130) × (10–)12– 19(–22) µm, sinuous walls 5–9 µm thick, linear distribution. Short cells: Silica cells 15–20(–25) × 14–20(–22) µm, circular to ovoid, frequent, solitary or in pairs or threes with cork, occasionally hook cells, situated between long cells, density (9)12–15(–17) silica cells/100 µm 2; Cork cells (5–)7–10(–12) × 14–19(–21) µm, sub-quadrangular, reniform to fusiform, sporadic, always with a silica cell. Spines and hairs: Hooks circular to frequently ovoid base (16–)19–24(– 28) × 7–12(–14) µm high, irregularly distributed between long cells, frequently solitary, sporadically paired with silica cell, density <2 hooks/ 100 µm 2; Prickles not studied; Macro-hairs 600–950(–1200) µm long, circular to obovate base 22–28(–31) × 18–21 (–25) µm, irregularly distributed across entire surface, denser at base. Lemma apical surface: Characterised by long cells similar to those of the dorsal area. Short cells: Silica cells of equal size, morphology, distributed solitarily, in pairs, threes and occasionally a four-cell union with cork and hook cells and prickles, at a lower density (6–)7–9(–10) silica cells/100 µm 2 than in dorsal area; Cork cells not studied. Spines and hairs: Hooks equal size, morphology, solitary, denser than in dorsal area 5–7 hooks/ 100 µm 2; Prickles ovoid base (19–)24–31(–33) × 19–26(–28) µm, and up to 30 µm long, irregularly distributed between long cells, solitary, density <3 prickle/100 µm 2, distributed at the middle of apex; Macro-hairs up to 1100 µm long, circular to obovate base 18–26(–30) × 16–19(–21) µm, irregularly distributed, more frequent at middle of apex. Stomata paracytic, rare at middle of apex. Material studied: Morocco: Bouarfa-Zelmon, 0533652/ 3569235, 1070 m.s.a.l., 29-III-2017, M. Chambouleyron (ECWP s.n. (HSSrf 156)); Gueraf Safsafat, -377500/ 3394443, 920 m.s.a.l., 12-IV-2019, M. Chambouleyron (ECWP s.n. (HSSrf 285(1/2))).