Santolina L.

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 : 144-145

56. Santolina L. 4

Aromatic dwarf shrubs. Leaves alternate, entire or dentate to pinnately lobed. Capitula small to medium, pedunculate. Involucral bracts in several rows, gradually increasing in length inwards. Receptacle slightly convex; scales present, half surrounding the achenes. Florets tubular, usually all hermaphrodite, yellow to whitish; tube often compressed and more or less winged, spurred at base or saccate and enclosing the apex of the achene. Achenes oblong, weakly 3- to 4(-5)-angled; pappus absent.

1 Plant glandular-viscid; stem leafy almost up to capitulum 3. viscosa 1 Plant not glandular-viscid; stem leafless for some distance below capitulum 2 Plant sericeous 1. oblongifolia 2 Plant tomentose to subglabrous, not sericeous 3Most leaves flat; stock slender 2. elegans 3Most leaves subcylindrical; stock stout 4 Leaves entire, tuberculate-dentate or pinnatifid to pinnatisect, with lobes less than 1-5 mm 5 Pinnae or teeth remote, or leaves apparently entire but with closely appressed teeth 4. rosmarinifolia 5 Pinnae or teeth crowded 5. chamaecyparissus 4 Leaves pinnatisect; lobes more than 1-5 mm 6 Leaves grey-tomentose 5. chamaecyparissus 6 Leaves not tomentose 7 Lobes of leaves crowded; peduncles not thickened above 5. chamaecyparissus 7 Lobes of leaves remote; peduncles thickened above 4. rosmarinifolia