ON GRAMINE 277 
globose, aculeate, yellow-brown, 20—28 x 20—24 4; epispore 
3—6 wu thick, with three germ-pores. 
Teleutospores. Sori similar, often confluent and as much as 
8 mm. long, conspicuous, pulvi- 
nate, black; spores ellipsoid, 
rounded at both ends, slightly 
thickened (up to 5) above, 
hardly constricted,smooth, brown, ) 
32—46 x 20—30 yw; pedicels hya- 
line or yellowish, curved, per- 
sistent, rather thin, very long (as 
much as 120); a few mesospores 
sometimes intermixed. 
{[Aicidia on Melampyrum 
spp.]; uredo- and teleutospores 
on Molinia coerulea, July—Oc- 
tober, Perthshire (Dr B. White). 
This zcidium is not recorded for 
Britain, and appears to be very 
rare everywhere. (Fig. 210.) 
Plowright, relying upon the experi- 
ments of Rostrup, connected the 
ecidiuin on Orehis latifolia with this 
Puccinia, though he himself could not 
succeed in the infection. Others have 
similarly failed, and there seems to be a ee ene re 
little doubt that Rostrup’s conclusions tiers, Raniioeh (Dr Bashanal 
were inaccurate. Juel has since then White). 
succeeded in showing that an ecidium 
on Melumpyrum pratense is part of the life-cycle of a Puceinia on Molinia, 
which he named P. nemoralis, but of which there is no proof that it is 
different from P. Moliniae Tul. (Juel, Z.c.). Liro confirms this result and 
names his. species P. Meidii-Melampyri (l.c.). The ecidiospores are 
described by Sydow as “yellowish,” but Juel describes them as colourless, 
like those of the allied species P. Phragmitis and P. Trailit. 
Since the ecidium on Melampyrum has not been found in this country, 
the British species may turn out, on investigation, to be different from 
these. For there is a closely allied species or biological race, named by 
Cruchet (Centralbl. f. Bakter. 2. xiii. 96) P. Brunellarum-Moliniae, which 
has teleutospores very like those of P. JJoliniae Tul. but its ecidium on 
