Evax Gaertner

16. Evax Gaertner 1

Like Filago but clusters of capitula usually pulvinate; involucral bracts usually very numerous; inner florets functionally male; achenes dorsally compressed; pappus always absent.

All species grow in dry, open habitats.

Literature: J. Chrtek & J. Holub, Preslia 35: 1-17 (1963). G. Wagenitz, WilldenowiaS’. 395-444 (1969). R. B. Fernandes & I. Nogueira, Bol.Soc.Brot. ser.2,45:317-347 (1971).

1 Involucral bracts 15-20, acute, not acuminate or cuspidate; receptacle short

2 Stem 0 -5-2 cm; cauline leaves very fewandcrowdedor absent

7. perpusilla 2 Stem 1-5 cm; cauline leaves several, remote 8. nevadensis 1 Involucral bracts more than 30, acuminate or cuspidate, rarely acute; receptacle elongated

3 Achenes papillose to smooth, rarely with short hairs at the base

4 Rosette-leavesvery broadlyobovateto suborbicular;lamina about as long as wide; involucral bracts very shortly pointed, not cuspidate, curved on the back 6. rotundata 4 Rosette-leavesoblanceolate-to obovate-spathulate;lamina distinctly longer than wide; involucral bracts long-acuminate or cuspidate, ± straight on the back

5 Rosette-leaves 15-30 mm, narrowed into a long, sheathing petiole, erect, c. 4 times as long as the clusters of capitula; involucral bracts 3 mm, with arista 0-5 mm 2. contracta 5 Rosette-leaves 5-16 mm, not narrowed into a long, sheathing petiole, patent, 2-3 times as long as the clusters of capitula; involucral bracts 3-4- 3 mm, with arista 1-1-5

mm 1. pygmaea 3 Achenes hairy(sometimes onlysparsely)

6 Stem very shortor absent

7 Rosette-leaves 7-8 mm wide, rounded at apex, greyish-green 5. lusitanica 7 Rosette-leaves 1 -2-5 mm wide, subacute to acuminate, whitish 4. carpetana 6 Stemdistinct

8 Rosette-leaves 15-40x 3-7 mm, oblong-lanceolate, c. 4 times as long as the cluster of capitula 3. asterisciflora 8 Rosette-leaves 5-15 x 1-5 mm, linear-lanceolate to oblong-obovate, about twice as long as the cluster of capitula

9 Rosette-leaves 1 -2-5 mm wide, whitish to greyish, ± firm; achenes ± densely hairy 4. carpetana 9 Rosette-leaves 2-5 mm wide, greyish-green, soft; achenes sparsely hairy or subglabrous 1. pygmaea