E-Flora BC: Electronic Atlas of the Flora of British Columbia

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 SPHAERALCEA

1. Leaves round-toothed to lobed less than halfway to the midvein; calyces with bractlets plants 20-80 cm tall............................S. munroana

1. Leaves deeply parted nearly to the midvein; calyces without bractlets; plants 10-20 cm tall............................S. coccinea

Source: Illustrated Flora of British Columbia