4b. Styrax platanifolius Engelmann ex Torrey subsp. stellatus (Cory) P. W. Fritsch, Ann. Missouri Bot. Gard. 84: 743. 1998.
Hairy sycamore-leaf snowbell
Styrax platanifolius var. stellatus Cory, Madroño 7: 111. 1943 (as stellata)
Young twigs with sparse, white, stellate hairs in addition to scattered, orange-brown or dark-brown, stalked, stellate hairs proximally. Leaf blades: margins often irregularly undulate, usually weakly 3-lobed or coarsely toothed, sometimes entire, abaxial surface with scattered, white, stellate hairs in addition to scattered, orange-brown or dark-brown, stalked, stellate hairs on some leaves, surface visible through pubescence, adaxial surface with scattered, stellate pubescence. Pedicels with white, stellate hairs of various lengths. Flowers: calyx with white, stellate hairs of various lengths, margins and teeth densely glandular, at least some teeth to 1 mm; style hairy from proximal end to 50-70% of total length.
Flowering Apr-May; fruiting Jul-Sep. Dry, wooded bottomlands, rocky banks and ledges; 500-700 m; Tex.
The range of subsp. stellatus is contiguous with the southern boundary of subsp. platanifolius at the southern edge of the Edwards Plateau. It is rare throughout most of its range.