Hong Kwai, Chamaecyparis formosensis (Formosan Cypress)

http://en.wikipedia.org/wiki/Chamaecyparis_formosensis

Chamaecyparis taiwanensis (Taiwan Cypress; simplified Chinese: 台湾扁柏; traditional Chinese: 臺灣扁柏; pinyin: tái wān biǎn bǎi) Though i have never heard it called that in Chinese. Usually called: Hinoki or kwai mu.

Very fragrant with a soft yellow texture that is rich with oil. The sawdust will clump and stick to your clothes.

As Driftwood: Has a brown, ragged, stringy bark, larger pieces are usually straight. Yellow color is evident when cut and the smell is strong and sweet.

http://en.wikipedia.org/wiki/Chamaecyparis_taiwanensis

I noticed this excerpt:

"It is most commonly treated as a variety of Chamaecyparis obtusa in European and American texts,[1] but more often accepted as a distinct species by Taiwanese botanists.[3][4] The two taxa differ in ecological requirements, with C. obtusa growing primarily on drier ridgetop sites, while C. taiwanensis occurs on moist soils and with higher rainfall and air humidity."

I wonder if the amount of oil might be in part due to growing in high humidity. I assume the oil acts to repel bugs, and Taiwan certainly has those!