THE ALGA-FLORA OF CAMBRIDGESHIRE, 291 
included spores, enlarged. 5. si cP istionns ~ > agg branch, x 90; 
cluded spore ; t, terminal spore; b, short sporal bra Moniliform —— of 
spores. 7. Two sets he peat spores, X 55. 8. "edad and subterminal 
——— of a sporal bran: 
THE ALGA-FLORA OF CAMBRIDGESHIRE. 
Dr'G. 8. “Weert, b.A., AACS, 
Scholar of St. John’s College, Cambridge. 
(Prates 394-396.) 
(Concluded from p. 268.) 
tll a 
i ic ca 
808. NavicuLa GRACILIS Kitz. 2. Dernford Fen, 1 mile 8. of 
Shelford. 8. She Genet Cambridge; Comberton; Orwell. 
i 
Var. NEGLECTUM (Thwvaites), ae. Colletonema neglectum Thwaites ; 
Schizonema reais (Eh ae aan gracilis var. schizo- 
nemoides Van Heurck. 3. hee “St. J hn’s College ‘‘ backs,” and 
Sheep’s Green, Jager ssi cal ; Wimpole Park. 7. Near March; 
Saat West rth 
N. a Kiit Syn. apa ob viridula at, 
Rabenk. 8. Sheep's ipa ‘Cambridge. 4, Histon. 5. Chip 
ham Fen. 
5. N. rapiosa Kiitz. Syn. are hes Lge ) Hebenbe 
2. Dernford Fen, 1 mile 8. of Shelford. 8. Ditch, St. Jo 
8. Guyhirn 
Var. acuta (W. Sm.) bie Heurck. Syn. Pinnwlaria ee 
W. Sm. 2. Dernford Fen, 1 mile §. of Shelford. 8. She 
poe Cambridge. 5. Chigpermats Fen 
. N. cryprocermara Kiitz. 3. Soest 7. Near March; 
j Sutton West Fen. 
{ Var. VENETA (Kit z.) Van Heurck. Syn. N. veneta Kiitz. — 3. 
+ Ditch, St. John’s College ‘‘ backs,” Cambridge. 4. Histon. 7. 
eer West ‘eo 
—  — -_, 
Ne OcEPHALA Kiitz. 2. Pan ae Fen, 1 mile 8. of 
Shelford. 3. P Wimpole Park. 7. Near Mar 
*Var. ampuiceros Van Heurck. 38. Ditch, St. John’s College 
“backs,’’ Cambridge. 7. Sutton West Fen. 
308. N. numiuis Donk. Syn. N. inflata W. Sm. 6. Near Ely. 
309. N. uanceoxata Kiitz. 8. Comberton; Orwell; Wimpole 
Park. 5. Wicken Fen ; ; Chippenham Fen 
fs 0. N. Gastrum (Ehrenb.) Donk. 5, iden Fen 
811. N. rumma W. Sm., 1853. Syn. N. —_ Ralfs, 1861. 
2. Shelford. : 
u 2 
