Lophophora williamsii var. koehresii
Rod Lophophora 55 (1997)
Family
Cactaceae
Genus
Species
Lophophora williamsii var. koehresii
Author
(Říha) Grym
Chinese genus
乌羽玉属
Chinese name
-
Accepted
DescriptionEdit description
Seeds
Lophophora koehresiiSN|1749]]SN|1759]] has a seed testa structure completely different from the other lophophoras. The hilum is open and almost circular. The testa is reticulated, not nodulated. The individual cells of the testa almost merge.
Description
Lophophora diffusaSN|1759]]SN|1749]] var. koehresii is a globular spineless cactus with large tap root and very interesting flower with pink to brownish coloured strips. It differs from the closely related Lophophora diffusaSN|1749]]SN|1749]] by being a characteristically dark green colour. It is also a smaller size (smaller than any other plant within the entire Lophophora family), and the ribs are more strongly in relief. Although this species usually grows as a single headed plant in its native habitat, in cultivation with time, once a mature plant reaches 5-6 centimetres in width, pups do begin showing themselves.
Roots
It has a huge fat underground tap-root that greatly exceeds the size of the aerial stem. May be this is one of the largest and deeper tuberous roots, when compared to others within the genus of Lophophora of the same age. Although the tuber is one of the largest when compared to its body and stem it is indeed one of the smallest grower with dimensions of ten centimetres in diameter rarely reached.
Flowers
Pinkish to cream with a darker pink or brownish midrib, reaching over 3 cm in diameter. Unlike the somewhat wider flower petals of Lophophora diffusaSN|1749]]SN|1749]] and Lophophora williamsii, this variety has unusually thin petals. Like Lophophora diffusaSN|1749]]SN|1749]], it is also self-sterile and requires cross pollination to produce seed.
Stem
6-10(-12) cm in diameter. It has the darker skin tone than any other lophophora.
Fruits
Creamy-white, often turning to a nice rosy pink. Each fruit containing twenty plus seeds.