Stipa lagascae Roemer & Schultes
Year: 2025
Type: article
Abstract: Stipa lagascae Roemer & Schultes (Figure 61). Lemma dorsal surface: Characterised by rectangular long cells of (10–)20–45(–50) × 10–18(–20) µm in dorsal area and 25–50(–60) × 8–15 µm at margins, smooth to undulate walls, up to 4 µm thick at margin and up to 6 µm thick in the dorsal, linear distribution. Short cells: Silica cells not observed; Cork cells not observed. Spines and hairs: Hooks circular to reniform base 15–28 × 6–10 µm high, regularly distributed between long cells, frequently solitary, occasionally a pair of hooks, density 9–12 hooks/100 µm 2; Macro-hairs 350–450(–515) µm long, circular base (20–)25–35 µm, regularly distributed in lines from media dorsal area to base of lemma. Lemma apical surface: Characterised by similar long cells to those of the dorsal area, slightly shorter 12–28(–32) × 10–20(–21) µm. Short cells: Silica cells fusiform, occasional, in pairs with hooks, 5–10(–11) × 12–20 µm; Cork cells not observed. Spines and hairs: Hooks equal in size and morphology to the dorsal, irregular distribution, at similar density than in the dorsal area (8–12 hooks/100 µm 2); Prickles of two types: Short up to 12 µm long in first basal section of apex lemma, and Medium of more than 15 µm in terminal basal section of apex lemma, density 1–3 prickles/100 µm 2; Macro-hairs ovoid base (18–)20–40 × 45–50(–60) µm and up to 410 µm long, distributed at middle and distal parts of apex. Material studied: Morocco: Air Bri Mahkan, Merija,0534575/3769225, 1280m.s.a.l., 8-V-2012, M. Chambouleyron (ECWP s.n. (HSSrf 238)); Bou Iblane, Tamtroucht, 1910 m.a.s.l., 4-VI-2019, M. Chamboleyron, ECWP n.n.
Authors: Vázquez, Francisco Maria, Márquez, Francisco, García, David, Oualidi, Jalal El
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W6893471171
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