the Gemis Streptopogon. 109 
Up to the present time, therefore, there have been twenty- 
six species with one variety referred by different authors to 
the present genus. A critical comparison of many of these, 
however, leads us at once to exclude them from the genus. 
The species which are certainly not congeneric with wS\ ery- 
throdontus , the type of the genus, are the following : — 
(1) S. mnioides (Schwaegr.), Mitt. — Mitten himself has later (16) 
removed this plant from the genus Streptopogon , and made it the type 
of a new genus Calyptopogon. Paris (26) has since reduced Calypto - 
pogon to a section of Streptopogon , but Brotherus (3) maintains it as 
a genus. Barbula mmoides, Schwaegr., is certainly generically distinct 
from Streptopogon in areolation. 
(2) -S’, marginatum (Hook. f. and Wils.), Mitt. — When placing the 
species in the genus Mitten (12) remarked merely ‘ another species of 
the genus is S. marginatus ’ ; afterwards, however, we find Mitten 
(16 and 17) calling it ‘ S. S marginatus,’ and remarking, 4 This, which 
appears destitute of peristome, is in other respects more nearly related 
to Streptopogon than to any other genus/ Muller (24, p. 424) has 
referred the species to. his genus Willia, creating a section Schistidiella 
for its reception. 
(3) S. australis, Mitten. — Muller (20) has stated that from the 
description of the plant, this species belongs to his genus Willia . An 
examination of the type specimens of S. australis in Mitten's her- 
barium shows however that the moss clearly belongs to the genus 
Didymodon. 
(4) S. crispatus (Hampe), Jaeger. — This species, which has been 
removed to the genus Calyptopogon by Brotherus (3), possesses an 
areolation quite different to anything found in the species of Strepto- 
pogon. 
(5) and (6) A. ? mayottensis, Besch., and S. maveganensis, Besch. — 
Brotherus (3) has remarked under Streptopogon , ‘ S. mayottensis, 
Besch., aus der ostafrikan. Insel Mayotte, gehort nicht zu dieser 
Gattung, sondern ist eine Funariacee, welche als steril nicht naher 
bestimmbar ist.’ I have examined the type of S. mayottensis in 
Bescherelle’s herbarium at the British Museum. The plant is cer- 
tainly to be excluded from Streptopogon , and belongs, as Brotherus 
has pointed out, to the Funariaceae, showing the habit and areolation, 
and the peculiar shaped paraphyses of the male inflorescence charac- 
