Cornus L.

1. Cornus L. View in CoL 3

(Inch Chamaepericlymenum Hill , Swida Opiz , Thelycrania (Dumort.) Fourr. )

Deciduous trees, shrubs or rhizomatous herbs. Leaves usually opposite, entire. Petals valvate. Ovary 2-locular. Fruit a drupe with a single, 2-locular pyrene.

Literature: A. I. Pojarkova, Not. Syst. (Leningrad) 12: 164- 180 (1950). 1 Herb with annual flowering stems; inflorescence an umbel with large, white bracts exceeding the flowers 5. suecica

1 Shrubs or small trees; inflorescence ebracteate, or with yellowish-green bracts which do not exceed the flowers

2 Inflorescence anaxillary umbelwithyellowish-greenbracts, appearing before the leaves; petals yellow; fruit red 4. mas

2 Inflorescence a terminal,ebracteatecorymb,appearingafter

the leaves; petals dull white or pale yellowish-white; fruit white or purplish-black

3 Petals 4-7 mm; fruit purplish-black; largest leaves with 3-5 pairs of veins 1. sanguinea

3 Petals 3-4 mm; fruit white; largest leaves with 5-7 pairs of veins

4

Pyrene ellipsoid, cuneate at base; plant without or with few stolons 2. alba 4

Pyrene suborbicular, rounded at base; plant stoloniferous

3. sericea