246 : LICHENES HIMALAYENSES. 
and on some of the ridges are minute snow-white soredia, much resem- 
bling the cyphellæ of some Sticte (of Sticta Wallichiana, Bab. MSS. 
more especially. The microscope showed the apothecia to be full of 
acicular paraphyses which became darker at.the extremities; I failed to 
discover the asci; and found only one sporidium, which was obovate 
and biseptate. This very remarkable plant connects the genus Cetraria 
with Nephroma. 
8. Solorina saccata, Ach. Var. 6. pruinosa, Fries. 
Has. Kathi Pass, near Dwali, north side; Kumaon ; alt. 8000 feet ; 
fertile. 
The form a vulgaris, Fries, thallo nudo, is unknown to me. Mougeot's 
and Scheerer’s specimens are pruinose; so is every specimen more Or 
less which I have seen from the Continent of Europe, or from Britain ; 
and so also are these. So likewise is the Abyssinian Solorina Simensis, 
Hochst. (in Linnæa, 1848, p.17) ; which is said to differ from the present 
species in having the under side white, variegated with ferruginous 
veins; the Indian specimens are more ferruginous below than is com- 
monly the case in the European specimens (though some from the Tyrol 
scarcely differ); the veins are much the same colour as the rest, but 
rather darker; the thallus is whitish below at the edges. So far as I 
can judge from a minute specimen of Solorina Simensis (Schimper! 1393), 
it is only a slight variety of S. succata. 
9. Peltidea horizontalis, Ach. ? 
Has. Barren; growing on micaceous rocks. Dwali; Kumaon, 
9000 feet above the sea. 
Thallus 8 inches broad; it appears to belong to this species, but 
being barren the determination is rather uncertain. 
10. Peltidea canina, Ach. 
. Has. Chinar, Kumaon, alt. 8700 feet above the sea; Dugli, Ku- 
maon, alt. 9000 feet above the sea; fertile in both localities. (Coll. 
n. 8.) 
"The thallus is more membranaceous than usual, decidedly tomentose 
at the margins, beautifully reticulated with veins below, which towards 
the margins are pale (reddish when wet), towards the centre darker. 
Apothecia growing from elongated lobes of the thallus, almost as in 
P. polydactyla. The colour of the thalli both wet and dry is the same 
_ asin P. canina. A larger specimen from Dwali (Coll. n. 7) is barren ; 
.. it has the thallus somewhat thicker, more crisped, the lobes ample, la- 
