KEY TO MALVACEAE
1. Stigmas extending full length on the inner surfaces of the style branches.
2. Calyces with basal bractlets; carpels beakless ....................Malva
2. Calyces without basal bractlets; carpels beaked ............................Sidalcea
1. Stigmas terminal and head-like.
3. Leaves heart-shaped and toothed; petals yellow...............Abutilon
3. Leaves mapleleaf-like or kidney-shaped and lobed; petals not yellow, colors various.
4. Petals usually more than 2 cm long; leaves 4-15 cm long; carpels glabrous on the sides, opening the full length at maturity.........................Iliamna
4. Petals 1-2 cm long; leaves 2-6 cm long; carpels strongly net-veined on the basal half of the sides, remaining closed at the bases at maturity ..................Sphaeralcea
KEY TO MALVA
1. Upper stem leaves dissected into linear segments; petals 2-3 cm long .................... M. moschata
1. Upper stem leaves shallowly lobed; petals 0.4-2.5 cm long.
2. Petals 1.5-2.5 cm long; calyx bracteoles egg-shaped or oblong ......................... M. sylvestris
2. Petals 0.4-1.2 cm long; calyx bracteoles linear.
3. Carpels rounded and glabrous (except for the short hairs) on the backs; petals 2-4 times as long as the calyces ....................M. neglecta
3. Carpels flattened and wrinkled on the backs; petals from shorter to only slightly longer than the calyces.
4. Petal claws glabrous; carpels with narrowly winged, minutely toothed angles; calyces papery and greatly enlarged in fruit........... M. parviflora
4. Petal claws fringed or bearded; carpels with sharp-pointed wingless angles; calyces green and barely enlarged in fruit .........M. rotundifolia
Source: Illustrated Flora of British Columbia
