294 12, Fragil. 1. HYDROPHYT. —Pl.celll. aph 
.. 3. Fragilaria pectinalis. , Finlike breaking-up. 
Threads simple, flat, stiff, narrow, very brittle, growing 
_ narrower; joints three times broader than long, pellucid in 
the middle. 
Conferva pectinalis, Muller in N. Act. Petr. 3,91; Engl. Bot, 1611. 
Conferva branchialis, Roth Cat. 1, 186, 
Diatoma pectinalis, 4gardh Disp. 35. 
On decaying leaves in ditches; March. 
XI. 13. BIDDULPHIA. Biddulph. 
Thallus threadlike, jointed, compressed; jomés nume- 
yous, formed of several longitudinal filaments united to- 
gether by a transverse pellucid band; sporidia granular, 
purplish, forming a spot under the tranverse band.—Ma- 
rine plants, green or white. 
1. Biddulphia pulchella. Pretty biddulph, 
Threads simple, pale green; joimts nearly as long as 
broad, four-cornered, granular, reddish. 
Conferva Biddulphiana, Engl. Bot. 1762. 
On marine plants; November and December. 
Threads half an inch long; sporidia reddish, scattered ; 
joints appearing as if furrowed longitudinally, crenate 
where they join. 
4 
2. Biddulphia obliquata. Crooked biddulph. 
Threads nearly simple, in tufts, brownish white; soznts. 
agoregated, obliquely four-cornered, connected with the 
hext by one corner, 
Gonferyva obliquata, Engl. But. 1869, left-hand fig. 
Diatoma obliquata, Lyngbye Hydr. Dan, 181. 
On marine plants. 
Joints about as broad as long; granules red or brownish. 
8. longa. Joints nearly twice as long as broad. 
Conferva obliquata, Engl, Bot. 1869, right-hand fig. 
» 3. Biddulphia stipitata. Stipitated liddulph. 
_ Threads simple, tew-jointed, inserted laterally on a long, 
hairlike stipes; joints twice as broad as long. 
Conferva stipitata, Engl. Bot. 2488. 
Covering marine plants. 
Tufts golden yellow, when dry greyish ; ¢hreads.composed 
of 3 to 5 joints, twice or thrice as long as broad, rather 
bent upwards. 
