134 
V. B. Wittrock. 
Hab. in India occidentali in insula St. Thomas, in 
Pithophora Cleveana Wittr. epipbyticum. Professor P. T. 
Cleve legit 18 T ö68. 
Among the monoecious species known before, only 
one, Oe. cymatosporum Wittr. & Nordst., has a foveolate 
exosporium. As to the rest, there are several differences 
between those two species. Oe. foveolatum is thicker in 
all its parts, has comparatively longer oogonia with the 
pore of fecundation placed higher up, has the spermato¬ 
zoids two and two (not single) in the mother-cells, has 
shorter vegetative cells and smaller scrobiculæ in the exo¬ 
sporium etc. 
3. Oe. (lictyosporum Wittr. Prodr. Monog. Oedog. 
pag. 13. 
Hab in Brasilia ad Lagoa Santa provinciæ Minas Ge- 
raës, ubi D:r E. Warming legit. Cand. O. Nordstedt hanc 
plantulam, microscopice præparatam mihi benevole com¬ 
municavit. 
4. Oe. upsaliense Wittr. Prodr. Monog. Oedog. 
pag. 15. 
Hah. in Groenlandia horeali ad Igdlutjait (Professor 
Trf. M. Fries) et ad Godhavn, Sapiursak, Tessiursarsoak 
(D:r S. Berggren sec. Cand. O. Nordstedt). 
B. Species dioicæ, nannandriæ: 
5. Oe. Areschougii Wittr. Prodr. Monog. Oedog. 
pag. 19. 
Hab. in Groenlandia boreali ad Kikertak (D:r S. Berg¬ 
gren sec. Cand. O. Nordstedt). 
6. Oe. cyathigerum Wittr. 
ß ornatum nov. var. 
Var. exosporio costis longitudinalibus irregulariter 
anastomosantibus ornato ; cellulis suffultoriis minus tumidis ; 
crass, cell, veget. 21—30 //, altit. 3 1 / a —9plo majore; 
„ „ suffult. 39—42 „ „ 2—2 <1 / 2 plo ,, 
„ „ oogon. 56—65 „ „ 85—102 //; 
„ „ oospor. 54—60 „ „ 76—77 „ 
