Stipa trabutiana F. M. Vazquez

Stipa trabutiana F.M. Vázquez (Figure 62 (2)). Lemma dorsal surface: Characterised by rectangular long cells of 18–50 × 18–22 µm in dorsal area and 38–51 × 18–21 µm at margins, fine sinuous walls, thickness 3–6 µm, linear distribution. Short cells: main Silica cells of 8–12 µm, circular to obovate, sporadic, more frequent at margin, mostly in pairs or threes a hook, occasionally with a cork cell, situated between long cells, never solitary; Cork cells 8–11 × 5–11 µm, circular to reniform, sporadic, with a silica cell or very occasionally a hook cell (1/1000 cases). Spines and hairs: Hooks circular base 9–13 × 6–9(–10) µm high, regularly distributed between long cells, in pairs or threes with silica, cork or additional hook cells, more frequently solitary, density 12–15 hooks/ 100 µm 2; Prickles ovate to circular base 20–26 × 20–28 µm and 40–150 µm long, between macro-hairs, distributed across entire surface, up to 2 prickles/100 µm 2; Macro-hairs 200–380 µm long, obovate base 30–37 × 21–25 µm, regularly distributed in lines from mid-dorsal area to base of lemma. Lemma apical surface: Characterised by long cells similar to those of the dorsal area, slightly shorter 11–37 × 8–18 µm. Short cells: Silica cells equal in size and morphology to the dorsal, more frequent; Cork cells equal in size and morphology to the dorsal, more frequent. Spines and hairs: Hooks of equal size, density and morphology to the dorsal, irregular distribution; Prickles equal in base and size, up to 85 µm long, distributed in the middle and at the distal end of the apex up to 6 prickles/100 µm 2; Macro-hairs similar in size and morphology to dorsal, mostly located at distal part of apex. Material studied: Morocco: Mengoub, 0551937/3565098, 30-III-2007, 1000 m.s.a.l., M. Chambouleyron (HSS82619).