Hydrangea petiolaris,
a deciduous liana that emerges aerial roots from trunks or branches
and climbs the other bodies to reach 10-20m, grows in mountainous
regions. Leaves, with opposite phyllotaxis, variable in size and
shape; in on-branch leaves on trees. 5-12cm long, almost
oval-shaped, while those on rocks or crawling in the forests are
circular, some not to reach 2cm long; those leaves are with pointed
tips, bases circular with shallow heart-shaped, and more than 30
uneven serrations on one-side margins. Branch tips bear
10-18cm-in-diameter inflorescences; ornamental flowers are white,
and 3-7 of them encircle bisexual flowers. Bloom time: June-July. |