"Allan and the Holy Flower" is a 1915 novel by Henry Rider Haggard featuring Allan Quatermain. This is one of the 14 books that Haggard wrote - starting with "King Solomon's Mines" - depicting the adventures of Quatermain, great English hunter in the wilds of mysterious Africa.

Brother John, who has been living in Africa for many years, gives Allan Quatermain the largest orchid he has ever seen. Later, in England, he has a meeting with Mr. Somers, an orchid collector who is prepared to finance an expedition to search for the plant. Join Allan as he sets out to find this rare orchid ... and finds something more.