168 OONJ ugate^e. mesocarpus.
greater size of the sporangia; but these arc, I think, of a
sufficiently Avell marked character to justify its being ranked
as a distinct species. I t has only as yet been found by that
indefatigable observer Mr. Jenner.
3. Mesocarpus recurvus Ilass.
P late X L I I I . Fig. 2.
Char. Filaments smaller than those o f M. intricatus. Cells
six or seven times as long as broad. Sporangia circular.
Sphcerocarpus recurvus Hassall, in Annals of Nat. Hist.
vol. xii. p. 186. plate 7. fig. 10.
Hab. Penzance: Mr. Ralfs. Rackham Common: Mr.
Jenner.
“ This species I first received from Mr. Ralfs, and some
two or three Aveeks afterAvards It was sent me hy Mr. Jenner.
I regard, it however, as the species figured by Dillwyn (Supplement,
plate C.), as M. genufexa in a state of reproduction.”
— Annals.
4. Mesocarpus depressus Ilass.
Plate X L IV . Fig. 1.
Char. Filaments rather larger than those o f Mesocarpus
recurvus. Cells six or seven times as long as hroad.
Sporangia oval, small, their long diameter being placed in
the direction o fth e length o f the cells.
Sphcerocarpus depressus Hassall, in Annals of Nat. Hist,
vol. xii. p. 186. plate 7. fig. 11.
llah. In a boggy spot near Cross in Hand, opposite to
where the road branches to Hailsham: Mr. Jenner.
Penzance: Mr. Ralfs.
“ There can he no doubt of the distinctness of this species,
Avhich Avas procured b y Mr. J e n n e r, some Aveeks before it
Avas found and transmitted me by Mr. Ralfs.” — Annals.
169
5. Mesocarpds nummuloides Hass.
Plate X LV . Figo. 1.
Char. Fdaments o f rather larger size than those o f Mesocarpus
recurvus. Cells about six times as long as broad,
not usually recurved. Sporangia circular, and smaller than
those o f M. recurvus.
SphcBrocarpus nummuloides Hassall, in Annals of Nat. Hist,
vol. xii. J). 187. plate 7. fig. 12.
Hab. Hertford Heath : A. H. H.
This species approaches very closely to the folloAving.
6. Mesocarpus parvulus Hass.
Plate X L V . Figs. 2, 3.
Char. Filaments much shorter than those o f Mesocarpus
nummuloides. Cells usually six times as long as hroad.
Sporangia circular, small.
Mougeotia parvula Hassall, In Annals of Nat. Hist. vol. xi.
p. 4 3 4 .; SphcBrocarpus parvulus Hassall, Annals,
vol. xii. p. 187. plate 7. figs. 13 ,1 4 .
Hab. Hertford Heath, Epping, &c.: A. I I H . Near
Cross in Hand and WaterdoAvn F o re s t: Mr. Jenner.
The larger figure of the two may represent a distinct
S2)ecles.
7. Mesocarpus ovalis Hass.
Plate X L IV . Fig. 2.
Char. Filaments about equal in size to those o f Mesocarpus
parvulus. Cells ten or twelve times as long as broad.
Sporangia slightly elliptical, their long diameter being
placed in the direction o f the length o f the cells.
SphcBrocarpus ovalis Hassall, in Annals of Nat. Hist,
vol. xii. p. 189. plato 7. fig. 15.
Hah. Hertford Heath : A. H. II. Penzance : Afr. Ralfs.