Logfia Cass.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 123

15. Logfia Cass. 1

Like Filago but capitula in small clusters or sometimes solitary; involucral bracts 15-20, subobtuse to acute, never acuminate, stellate in fruit; outer achenes usually enclosed in bracts and falling with them.

All species occur in dry, open, often sandy habitats.

Literature: vide Filago .

1 Plant racemosely branched; clusters of capitula and single capitula in a racemose, spicate or paniculate inflorescence

2 Clusterswith3 -12 ± sessilecapitula; middleinvolucralbracts slightly saccate at base; plant usually whitish-lanate

2. arvensis

2 Clusters with 2-5 capitula; some capitula solitary, pedunculate; middle involucral bracts saccate at base; plant greyishtomentose 1. heterantha

1 Plantfurcately branched; clusters ofcapitula terminal and in the axils of the branches

3 Capitula broadly cylindrical; involucral bracts brownish, the outer similar in length and shape to the inner 6. neglecta

3 Capitulaovoid-pyramidal; involucralbractspale,theouter much shorter than and differing in shape from the inner

4 Lower leaves linear-lanceolate, the upper oblong-lanceolate; inner female florets c. 1 - 5 mm; hermaphrodite florets

1 -7-2 mm 4. clementei

4 All leaves similar; inner female florets 1 -8-2-5 mm; hermaphrodite florets 2-2-2-5 mm *

5 Leaves 4-10 mm, oblong-linear to linear, flat; clusters of capitula longer than the subtending leaves; middle involu­

cral bracts weakly saccate at base 3. minima

5 Leaves 15-25 mm, linear to filiform, often with involute margin; clusters of capitula usually much shorter than

the subtending leaves; middle involucral bracts strongly

saccate at base 45. gallica