Halèsia tetráptera.

The four-winged-fruited Halesia, or Snowdrop tree.

Full-grown tree at Syon, remarkable for its form; 15 ft. high, diam. of the head 52 ft. [Scale 1 in. to 12 ft.]

Full-grown tree at Syon; 15 ft. high, diam. of the trunk 1 ft., and of the head 39 ft. [Scale 1 in. to 12 ft.]