It is present in
Cephalotaxus and Torreya but absent in the other genus of Taxaceae, Taxus.
Yang et al., "Osteoblast differentiation stimulating activity of biflavonoids from
Cephalotaxus koreana," Bioorganic & Medicinal Chemistry Letters, vol.
Another natural compound, homoharringtonine, isolated from
Cephalotaxus harringtonia (Knight ex J.
Homoharringtonine is extracted from
Cephalotaxus harringtonia which is identified to be a cytotoxic alkaloid and is generally reported to block the progression of cells from G1 phase in to S phase and G2 phase into M phase (61).
Cephalotaxine, which has remarkable anticancer effect, is produced by plants of the genus
Cephalotaxus (Cephalotaxaceae) [23].
Deep simple morphophysiological dormancy in seeds of the basal taxad
Cephalotaxus. Seed Science Research, 21(3): 215-226.
The more light, the better chance plants will have to compete with tree roots." Among her favorites to compete with roots are drought-tolerant plants like coral bells, hellebores, epimedium, crested iris, anemone, microbiota, plum,
cephalotaxus, nandina, wahoo, dogwood and serviceberry.
If it has already, then because surgery will involve mutilating the hedge by cutting into old wood, which will not regenerate (unless yew, Cryptomeria, Sequoia,
Cephalotaxus, Torreya) don't bother.
Kuishi, on
Cephalotaxus harringtonia (Cephalotaxaceae), 30 Jul 2002, T.
Omacetaxine, a new molecular entity and first in a class of cephalotaxines, is a synthetic formulation of homoharringtonine, a drug isolated from the evergreen tree
Cephalotaxus in China.