Acer opalus, Miller Acer obtusatum, Waldst. & Kit. ex Willd.

8. A. opalus Miller , Gard. Diet. ed. 8, no. 8 (1768)

( A. opulifolium Chaix ).

Leaves up to 10 cm, but usually less than 8 cm, with 5 wide, short, acute or subacute lobes. Lower surface of leaf often glabrescent except for veins and vein-axils. Peduncles glabrous. • S. W. Europe, extending locally northwards to c. 50° 30' in W. Germany. Co Ga Ge He Hs It.

9. A. obtusatum Waldst. & Kit. ex Willd. , Sp. Pl. 4 (2): 984 (1806)

(inch A. aetnense Tineo ex Strobl ).

Leaves up to 12 cm, with (3) 5 short, wide, obtuse lobes. Lower surface of leaf more or less densely and persistently hairy, often tomentose. Peduncles hairy. Balkan peninsula, C. & S. Italy, Sicilia, Corse. Al Co Gr It Ju Si.

10. A. granatense Boiss. , Elenchus 25 (1838).

Leaves up to 7 cm, with 3 long, parallel-sided main lobes and 2 subsidiary basal ones. Lower surface of leaf, young petioles and young branches usually more or less densely hairy (glabrous in var. nevadense (Boiss. ex Pax.) Font-Quer & Rothm. ). 5. Spain; Mallorca. Bl Hs. (N. Africa.)

11. A. hyrcanum Fischer & C. A. Meyer , Ind. Sem. Horti Petrop. 4: 31 (1837)

(inch A. intermedium Pancic ).

Leaves up to 10 cm, with 5 long, narrow, parallel-sided lobes. Lower surface of leaf glabrous or slightly hairy. Balkan peninsula. Al Bu Gr Ju. A. reginae-amaliae Orph. ex Boiss. , Diagn. Pl. Or. Nov. 3 (1): 109 (1853), described from the mountains of C. Greece, has 3(-5)-lobed, glabrous leaves only 2-4 cm. It is closely related to 11 and perhaps best treated as a variety.