Stipa letourneuxii var. letourneuxii var. letourneuxii Trabut 1890
Year: 2025
Type: other
Abstract: Stipa letourneuxii var. letourneuxii Trab. (Figure 3 (1)). Lemma dorsal surface: Characterised by rectangular to sub-quadrangular long cells of (15–)18–40(–44) × 22–31 µm, smooth walls up to 10 µm thick, linear distribution. Short cells: main Silica cells 8–15 × 18–22 µm, circular to oblong, sporadic, more frequent at margin, frequently in pairs or threes with hook cells, situated between long cells, occasionally solitary; Cork cells 4–8 × 19–24 µm oblong to fusiform, sporadic, mostly with a silica cell or occasionally a hook cell. Spines and hairs: Hooks circular to sub-quadrangular base 12–22 × 6–9(–10) µm high, regularly distributed between long cells, in pairs or threes with silica, or additional hook cells, more frequent solitary, density 7–10 hooks/100 µm 2; Prickles not studied; Macro-hairs up to 450 µm long, circular base 10–18 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, smaller 10–25 × 8–12 µm. Short cells: Silica cells of equal size and morphology to the dorsal, more frequent; Cork cells of equal size, distribution and morphology to the dorsal. Spines and hairs: Hooks equal in size, and morphology to the dorsal, irregular in distribution and at a higher density (28–32 hooks/100 µm 2); Prickles circular to ovate base, 18–21 × 19–25 µm, 15–55 µm long, distributed at middle and distal parts of apex, up to 3 prickles/ 100 µm 2; Macro-hairs not studied. Material studied: Morocco: Aroval, 0500207/3636790, 1420 m.s.a.l., 9-V-2017, M. Chambouleyron (ECWP s.n. (HSSrf 142 (1/2); Bouarfa, 0640778/3609597, 1270 m.s.a.l., 10-IV-2017, M. Chambouleyron (ECWP s.n. (HSSrf 143 (1/2).
Authors: Vázquez, Francisco Maria, Márquez, Francisco, García, David, Oualidi, Jalal El
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W6893467151
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