"When there are less than 1,000 individuals remaining of a species, it's obvious that they're facing the danger of extinction," says Li, stressing that there are many species out there that have been seen but not yet documented, and whether they still exist remains a mystery.
「一個物種如果少於 1,000 個個體就算瀕臨滅絕，這些植物的危殆可想而知。」李家維強調，尚有不少物種多年來一直沒有採集紀錄，是否還存在尚待解謎。