Stipellula parviflora var. parviflora (Desf.) Röser & Hamasha, 2012

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 : 116-117

Stipellula parviflora var. parviflora (Desf.) Röser & Hamasha ( Figure 66 (1)).

Lemma dorsal surface: Rectangular to quadrangular long cells of (4–)6–22(–28) × 10–14(–16) µm, smooth to undulated walls up to 1 µm thick, linear distribution. Short cells: main Silica cells (8–)10–16 × 10–14(–15) µm, circular to ovoid, frequently solitary, occasionally in pairs or threes with cork cells, between long cells, density 44–58(–64) silica cells/100 µm 2; Cork cells (2–)4–8(–9) × 12–16 µm, fusiform to reniform, sporadic, in all cases with a silica cell. Spines and hairs: Hooks not studied; Prickles not studied; Macro-hairs 300–650(–730) µm long, circular base 10–14 µm, irregularly distributed across entire surface.

Lemma apical surface: Similar to dorsal area in long cell morphology, wall characteristics and distribution, length to 45 µm. Short cells: Silica cells equal in size, morphology and distribution, lower density of 32 silica cells/ 100 µm 2; Cork cells of equal size, morphology, distribution and density. Spines and hairs: Hooks circular to ovoid base 18–28(–30) × 7–10(–12) µm high, regularly distributed in rows, in pairs or occasionally threes with cork cells, more frequently solitary, density 16–31 hooks/100 µm 2; Longer prickles ovoid to circular base up to 29 µm, and up to 26 µm long, solitary, distirbuted at distal part of apex together with angulated prickles of lineal base 16–20(–24) × 5–7(–8) µm high, in the margin; density 8–14 prickles/100 µm 2; Macro-hairs of equal size, morphology and distribution, more frequent at distal part of lemma apex.

Material studied: Morocco: Air Bri Makhar, 0574230/ 3786765, 890 m.s.a.l., 17-IV-2014, M. Chambouleyron ( ECWP s.n. (HSSrf 102 (1/ 2); Bouarfa, 0593350/3588688, 1120 m.s.a.l., 5-IV-2017, M. Chambouleyron ( ECWP s.n. (HSSrf 93)).

Figures

FIGURE 66. Lemma surface of Stipellula parviflora var. parviflora. (1). Stipellula parviflora var. hoggarensis (2). A. Lemma central dorsal surface view. B. Lemma margin dorsal surface view. C. Lemma apex. D. Lemma together awn base (S. parviflora) or Lemma appendix apex (S. tibestica). lc. Long cell. sc. Silica cell. cc. Cork cell. h. Hook. p. Prickle. ap. Angulated pickle. mh. Macro-hair. Bars indicate 100 µm.