REVUE BRYOLOGIQUE - Cr 
Supplemental notes on the mosses of South-Western 
Switzerland or 4 
by W.-E. Nicnozson AE 
During the summer of 1903. I had the pleasure of revisiting 
the favoured region of the Rhône valley and the following notes 
on the mosses are supplementary to those which 1 have publis- 
bed in this review on the district (Rev. Bryol. 1902, p. 57). 
Starting from Gryon on the 14h July 1 walked by the Pas de 
 Chéville to Sion, where a few days were spent and whence 
I moved on to Zinal at the head of the beautiful Val d'Anniviers, 5 
where about à fortnight was spent. After which I crossed the. ne 
Col des Torrents to Arolla where a week was spent and an interes- 
ting and bryologically successful holiday was brought to a close. 
The Val d’Anniviers had been already carefully explored by the. 
late Prof. Philibert in his systematie manner and his results are : 
incorporated i in Dr Amann's list of the mosses of the district, but 
_ in so rich a région itis always possible to find Re which. 
has escaped previous observers. : 
Lam specially indebted to Dr Culmann, Dr G.-N. Best, Herr 
Breidler, Herr Warnstorf and M" H.-N Dixon for assistance with ‘ 
some of the more obscure species. + 
The more interesting species only are referred to in the follo- 
wing notes : ee 
Ditrichum flexicaule Hampe. — Limestone walls between Sion + 
and Vex, fruiting rather freely in places. A slender form of this 
species was gathered on the Besso above Zinal at an altitude of 
at least 10,000 feet. : 
“Ceratodon conicus Ldb. — Sion and several places in the Val 
d’Anniviers, €. fr. Some of this specimens should, perhaps, as 
D' Amann has suggested to me, be referred to C. dimorphus 
Phil., but I find great diffieul{y in separating the two species, as 
.T'have occasionally found leaves with plane and recurved mar- 
gins on the .same stems. Perhaps a larger proportion of leaves 
with plane margins oceurs in the plant which I recorded as ga- 
thered on the Riffel Alp. in July 4901, but even here the leaves 
are by no me#ns constantly plane-margined and the plants appear 
Lo me to pass insensibly into forms with leaves having strong 
recurved margins, such as the form which I ae on pe ho 
dry rocks of Valère above Sion. 
 Cynodontium strumiferum De Not. — piels in the Wüca. be 
ween Zinal and Grimentz, C. fr. — A rather luxuriant form with 
a Small capsule also occurred on the rotten wood of the Chalet. 
oofs in Zinal. — €. fallax Limpr. in rather large tufts in rock 
crevices in the Gorge de Navigenze above Zinal, c. fr. 
