Temnogametum] i\. iexnoqamstagejb (Wi 
filaments put <>ut short rounded conjugating tubes which unit'-, tin- 
cells themselves becoming benl towards each other, and vei 
the two cells coalesce and form the zygoapon I 
is produced which at first sighl rerj much resembles the central cell 
of the five cells constituting the spore of a '/ ugt tiaoi thi 
Staurospermea. In those filaments in which the pairs of cell 
off the conjugation is lateral, the two cells forming a zygospore muoh 
resembling the aplanoapore of a Gonati ■ na In Fa I I 
spores are oblique, and the convexities and oonoavities alternate along 
the filament precisely as in the case of a Bporiferous filamec 
latter genus. 
Both scalariform and lateral conjugation occur in the same fi] 
In all the specimens observed ( which had been dry for B lorn.' period) 
the contents of the thick-walled spores appeared to have contracted 
into two approximate rounded masses: whether the latter had ever 
been perfectly muted or had yet to unite within the wall of the 
spore is a matter that could not be definitely decided fr-mi the 
material. 
On account of the peculiar conjugation, this plant has been placed as 
the type of a new order — '/'/ mnogametacea of ( 'onjugata. 
X. ZYGNEMACE^. 
1. MOTJGEOTTA Ag. (1824) j em. Wittr. (1878). 
1. M. (§ Staurospermum) uberosperma \\. ct 6. 8. Wesl in 
Journ. Bot. 1897, p. 37. 
Hiii. i. \. -In paludilms exsiccandis ; April 1860. No. 176. 
This characteristic species hi longs to the section >■ rospermum : in 
maturely conjugated specimens this ran only be inferred Erom the 
genuflexed conjugating cells, but the young zygospores are aubi 
gular or snbqnadrate. The four processes presenl on the zygospores 
are developed very early, considerably before the zygospores are ripe. 
and are rarely of equal length ; thej are of the same diameter as the 
vegetative cells, and fit into them very closely. 
2. M. (§ Staurospermum) irregularis \V. el < r. S. Wesl in Joura 
Bot. 1897, p. 38. 
Pungo A.NDONGO.- In pascuis spongiosis breviter graminosis juxta 
rupes gigant. Pra;sidii prope Catete : .May 1857. No 111. 
The nearest species to this is .1/ '. mpucina (Bory) Ag., from which 
it is distinguished by its size, its colour, and its curious zygospon B. 
3. M. (§ Craterospermum) angolensis \\ '. et^G. 8. Weal in 
Journ, Bot. L897, p. 38. 
I'i \ ( ..i Amm.m,.).— Ad ramulos Podostemaeearum i hi/aria 
Tul.) in rivulis Prsesidii (Casalale). inter Q d g I: t. ajorem \ 
.March 1857. No. 105- 
This species differs from M. Icetevirena (A. Br.) Wittr. chiefly in the 
chromatophores each possessing a much fewer number of pyrenoids, 
and in the much -mailer zygospores. 
I. Mougeotis sp. W. el G. 8. West, l.c. 
Hrn. i. a — Ad culmos Eleocharidi* fluitantis in rivulis de M orro de 
Lopollo (5300 ped. altit.) ; Feb. I860. No 188. 
Mo88amede8. ETreq. in stagnis puris a<l ripas Bum Bero ; Aug. 
1859. No. 190. 
