Sansevieria lavranii R.H. Webb & A. Myklebust

Protologue: Sansevieria 37: 6-11 (2018).
Subgenus: Paniculatus
Group: Sansevieria ehrenbergii
Etymology: Named for John J. Lavranos, a noted Greek botanist and plant collector resident in South Africa with a very broad expertise in unusual plants from throughout Africa and the Arabian Peninsula. Lavranos was the original collector of this species (Lavranos 23295).
Distribution: Southern Somalia southwards into coastal eastern Kenya and possibly Tanzania.
Brief Description: Sansevieria lavranii is a mostly distichous, arborescent species with a 40 cm stem that forms dense stands from rhizomes. Immature leaves are similar in shape to mature leaves but much smaller. Mature plants produce 6 - 9 paired distichous and recurving leaves with a herringbone pattern of red-orange on a short stem. The leaves are numerous, lanceolate, 60-100 cm long by 10 cm wide, and are ascending to spreading. They are solid gray or green and smooth on both sides, channelled with a central groove on the upper side, narrow and stiff with three transverse grooves on each side, and a sharp orange-white tip. Other forms of this species are much larger, with plants upwards of 3 m tall observed in eastern Kenya. The inflorescence is about 75 cm tall and paniculate with1 - 5 flowers per cluster.
Similar Species: Sansevieria lavranii was described as a species to contain a number of plants with divergent characteristics in southern Somalia and eastern Kenya. Before this species was described, all these species were considered Sansevieria ehrenbergii, creating a species with extreme variability in form and geographic distribution. The current panoply of plants under this epithet ranges in color from gray to green and in size from under a meter tall to well over 3 meters. More field work is needed to ascertain whether this species should be separated into multiple species or subspecies.
 
 


Sansevieria lavranii in eastern Kenya. Toni Yocum provides scale for the height of the plant.
 


Sansevieria lavranii (Lavranos 23295) in cultivation.
 


A flowering specimen of Sansevieria lavranii (Lavranos 23295) in cultivation.
 


Sansevieria lavranii, a larger green-leaf form planted in Gilfrid Powys garden at Suyian Farm, Kenya. The plants were originally collected from the Galana Ranch in eastern Kenya.
 


A twisted leaf form of Sansevieria lavranii collected by the late Gilfrid Powys.