Stipa bufensis F.M. Vázquez, 1999

Vázquez, Francisco Maria, Márquez, Francisco, García, David & Oualidi, Jalal El, 2025, A taxonomic revision of Stipeae s. l. tribe (Poaceae) in N Africa, Phytotaxa 699 (1), pp. 1-174 : 106

Stipa bufensis F.M. Vázquez ( Figure 60 (1)).

Lemma dorsal surface: Characterised by rectangular to quadrangular long cells of 12–34 × 10–18 µm, smooth walls, up to 8 µm thick, linear distribution. Short cells: main Silica cells of 20–14 × 7–10 µm, oblong to obovate, sporadic and in pairs or threes with a hook, occasionally with a cork cell, situated between long cells, never solitary, more frequent at dorsal and less at margins; Cork cells 8–12 × 7–10 µm, fusiform to oblong, sporadic, always with a silica cell. Spines and hairs: Hooks circular to reniform base 10–14(–15) × 5–8 µm high, regularly distributed between long cells, in pairs or threes with silica, cork or additional hook cells, more frequently solitary, density 11–16 hooks/100 µm 2; Macro-hairs 180–350(–400) µm long, circular base 15–22 µm, regularly distributed in lines from mid-dorsal to base of lemma.

Lemma apical surface: Characterised by long cells similar to those of the dorsal area, slightly shorter 8–22 × 7–12 µm. Short cells similar to those of dorsal area in size, morphology and distribution. Spines and hairs: Hooks of equal size, density, distribution, and morphology to dorsal; Prickles circular base 18–24 µm and up to 70 µm long, distributed at distal part of apex and up to 4 prickles/100 µm 2; Macro-hairs similar to those of dorsal area but up to 480 µm long, located at distal part of apex.

Material studied: Morocco: Enjil, -459543/3714765, 1600 m.s.a.l., 20-V-2013, M. Chambouleyron ( ECWP s.n. (HSSrf 43 (1/2)); Maatarka, 0504317/3657382, 1480 m.s.a.l., 27-IV-2017, M. Chambouleyron ( ECWP s.n. (HSSrf 77 (1/2)).

Figures

FIGURE 60. Lemma surface of Stipa bufensis. (1) and Stipa juncea (2). A. Lemma central dorsal surface view. B. Lemma margin dorsal surface view. C. Lemma apical surface. lc. Long cell. sc. Silica cell. cc. Cork cell. h. Hook. p. Prickle. mh. Macro-hair. Bars indicate 100 µm.