Description (from Filipjev and Schuurmans Stekhoven, 1941)
Head
shaped like a flattened cap, only slightly offset. Spear slender
without basal swellings, Oesophagus
with
oval median bulb, distinctly
off set from the anterior portion of the oesophagus. Oesophageal
glands filling up the posterior club-shaped oesophageal portion.
Outlet of the ventral glands at the under side of the lumen of the widening
of the median bulb, that of the dorsal side superior to it. Nerve
ring crossing the posterior oesophageal portion slightly back from the
bulb, at a level with the excretory pore. Ovary single outstretched,
postvulvar uterine sac present. Eggs measuring 41-77(54) X 12-23(19)
um.
Male with rather long spicules, more than half as
long as the tail, gradually tapering from the swollen proximal end, which
is not distinctly offset, to the pointed tip. Gubernaculum 1/3 as
long as the spicula. The male is in the possession of two praeanal
subventral and three postanal pairs of papillae of which two subventral
and one subdorsal.
Occurs in the roots of grasses in the Eastmark of
Germany, in Rumania, the Bukowina, as well as in England, St. Albans and
Denmark.
Steiner has found it on diseased Arachis hypogaea,
Peanut, in Transvaal, South Africa, Chitwood (1931) on healthy and diseased
wild strawberries in the United States (Washington) and on potatoes (Solanum
tuberosum) of Denmark. It occurs further in Narcissus
sp. Hort. vars. Pearl Queen and Sir Ernest Shackleton and on Zanthium
sp. cocklebur, U.S.A.
