THE ALGA-FLORA OF CAMBRIDGESHIRE,. 57 
«ee fae Eee) De Toni. Syn. Ulothriv tenuis Kiitz. 
3. Winspole, Par 
81. H. montirormis (Kiitz.) Rabenh. 5. Chippenham Fen. 
82. Radiofilum flavescens, sp.n. (Pl. 394, figs. 10,11). R. 
cellulis submediocre, late et transverse ellipticis, cellulis conjunctis 
arcte in filis longis flexuosis; contentum chlorophyllosum cellularum 
cum Ey cee singulis, luteo-viride oe virideo-fuscescente. 
—— cell. 5°5-8°5 p; lat. cell. 7°5-10°5 
5. Wicken Fen: Aug. 1898. 
This species possesses a very distinct mucous envelope which 
exhibits a well marked radial striation, and the cells contain a 
ahi chioeophyll- plate with one pyrenoid, the remaining space 
being occupied by a yello juga fluid and a number of small granules. 
It is conan eet from R. conjunctivum Schmidle (‘Aus der 
Chloroph.-Fl. der Torfstiche zu Virnheim,’ Flora, 1894, Heft 1, 
, t. vii. f. 4, 5) by its elongated flexuose filaments, and its larger 
cells, which are broadly elliptical, as well as by the eee 
colour of the older plants. From R, apiculatum West & 
in Journ. Bot. 1895, 52 (cfr. also Knut Bohlin, ‘ Die Alg. “der cent: 
Regn. ee ’ Bih. till K. Sy. Vet.-Akad. Handl. Bd. 28, Afd. iii. 
10.7, hav iF, 8), ib is distinguished by its ‘larger size, ha’ form of 
its cells, ‘which are not apiculate, and the colour of their contents. 
Subfam. Cumtornore®. 
8. Herposterron repens (A. Br.) Wittr. Syn. Aphanochete 
ens A. Br. non Berth. 2. Dernford Fen, 1 mile 8. of Shelford. 
3. Wim le Park. 6. Roswell Pits, Ely, and ponds about Ely. 
The rites of Herposteiron Nig. are articular and very similar 
in nature to the piliferous apices of a Chetophora, Both this plant 
Herposteiron repens (A. r.) ittr. were ; iiericd on Elodea cana- 
densis, thickly covering both faces of the leaves, the procumbent 
branches of the alga in some cases closely following the contours of 
the cells of the Hiodea, and for this reason exhibiting a marked 
reticular structure. In some of the examples hypnospores were 
resent. 
<3 Norpstept1a eiozosa (Nordst.) Borzi. 8. Hardwick. 
| sag PHORA Pistrormis (Roth) Ag. 1. Inditch, Trumping- 
rigs . Sheep’s Green, Cambridge; Hardwick. 7. Near March. 
a C. Cornu Dama (Roth) Ag. Syn. C. endivefolia auct. 
Sheep’s Green, Cambridge ; Hardwick. 
87. C. eLeeans (Roth) Ag. 6. Near Ely. 
88. Draparnaupia ptumosa (Vauch.) Ag. 6. Roswell Pits, Ely. 
89. Sticzoctontum TeNvE (Ag.) Rabenh. 8. Sheep’s Green, 
Cambridge. 
40. 8. rasticiarum Kiitz. 8. Wimpole Park, 
# 
