COLLECTION ОЕ BORNEAN MOSSES. 293 
gathered by Mr. V. St. John Down, and by Mr. J. Н. Cranston, collected and 
sent me at an earlier date by Mr. Binstead, as well as a few collected some 
years back by Rev. Chas. Hose (Bishop Hose), which I received from 
Mr. W. R. Sherrin. А few of Mr. Binstead’s collection were made for him 
by Mr. E. О. Rutter, D.O., at Rundum, near Tenom. 
My thauks are due to the authorities at Kew and the British Museum for 
assistance in this paper, as well as to Monsieur Thériot and Herr Max 
Fleischer for much valued help. | 
DICRANACEÆ. 
WILSONIELLA TONKINENSIS, Besch. Sandy bank in open place near 
Sandakan, с.Ёг. (No. 7); stony bank, Tenom, с.Ёг. (№. 141). The latter а 
lax, long-leaved form, strongly recalling 7rematodon. 
I find nothing to separate the Bornean plant from the Tonkin species. The 
few species of the sub-genus Lu- Wilsoniella of this peculiar and interesting 
genus are closely allied to one another, and are probably, as hinted by 
Bescherelle, all racial forms of one or two species. The inflorescence, as 
pointed out by Bescherelle (Flor. Bryol. de Tahiti), affords the most distinct 
character ; in W. Karsteniana, C. Muell., from Australia, and W. pellucida 
(Wils.) from Ceylon and Java, the & flower is single or on a short branch 
below the perichætium ; in W. Jardin (Schimp.) from Tahiti and Samoa, 
the plant is still autoicous, but the f branch is ramified, with a terminal 
flower on each division; the dioieous W. tonkinensis is described by 
Bescherelle (op. cit.) as having the g stems simple or fasciculate at the base, 
with extremely narrow leaves and numerous flowers. This somewhat unusual 
form of the male plant I found actually to occur in Mr. Binstead’s specimens 
from Sandakan ; the d stems are frequently simple, but more often are 
ramulose, emitting clusters of two or three ramuli at different points of the 
stem, each terminating in a d flower; not at all unlike the figures of 
the d plant of Dicranella cerviculata, Bry. Eur. tab. 56. I have figured 
one of these male plants on PI. 26. fig. 1. 
In order to verify the identity of the Bornean plant with ТУ. tonkinensis, 
I examined the type of Bescherelle's species at the British Museum, where 
to my surprise I found that the supposed d flowers of Bescherelle did not 
belong to the Wilsoniella at all, but to а Dicranella, a fertile plant of which 
eccurs mixed up with the rest of the material! That it was actually this 
Dicranella which Bescherelle examined admits of no dispute, as he has 
carefully separated out the & plants which he had dissected and placed them 
in a separate envelope. This at once explains the ** extremely narrow leaves ” 
which he attributes to the male plant. The remainder of the gathering from 
Tonkin exhibits no 3 flowers, and it is truly dioicous, and in other respects 
agrees exactly with the Borneo plant. It is a curious fact that Bescherelle 
