Vesiculifera pulchella var. Hassall, in Annals of Nat. Hist.,
vol. X. p. 390.
Ilab. Clicshunt and its vicinity, especially Cheshunt Common
: A. II. II. Penzance : Mr. Ralfs.
Subsequent examination has confirmed the suspicion originally
entertained that this species, which was first sent me
by Mr. Ivalfs, was distinct from V. pulchella : the infiatcd
cells are smaller and more hexagonal than they are in that
species.
11. V e s ic u l if e r a V a u c h e r ii Hass.
Plate L. Fig. 4.
Char. Filaments about equal to those o f V. pulchella. Colls
usually two and a h a lf or three times as long as broad.
Sporangia circular, lodged in cells which are very considerably
inflated and o f an ovate form.
V. ventricosum Hassall MSS. Prolifera Vaucherii? M.
Leon le Clerc, loc. cit.
Hab. Cheshunt : A. H. H.
This is a very distinct species, differing from V. virescens
in its circular sporangia, and highly inflated cells, and from
V. pulchella in the ovate form of the infiations, which in
the latter species are slightly hexagonal.
12. V e s ic u l if e r a vire scen s Hass.
Plate L. Fig. 5.
Char. Filaments equalling in diameter those o f V. pulchella.
Cells once and a h a lf or twice as long as broad, fasciated.
Sporangia ovate, contained in cells o fth e same form.
Vesiculifera virescens Hassall, in Annals of Nat. Hist.,
vol. X. p. 391.
Hab. Notting Hill, near London : A. H. H.
This species comes very near to the following, of which
possibly it may be but a variety.
13. V e s ic u l if e r a ovata Hass.
Plate L. Fig. 6.
Char. Filaments about equal to those o f V. virescens. Cells
three or fo u r times as long as hroad. Sporangia ovate,
occasionally circular, contained in irvflated cells o f an
ovate form.
Vesiculifera ovata Hassall, in Annals of Nat. Hist., vol. x.
p. 392.
Hab. C h e sh u n t; A . H. H. Turner’s Hill and Heathfield
: Mr. Jenner.
This at all events is a very distinct species, if the preceding
one be not equally so.
14. V e s ic u l if e r a concatenata Hass.
P late L I. Fig. 3.
Char. Filaments thicker than those o f V. ovata. Cells six
times as long as hroad. Sporangium ovate; cell next
the sporangium inflated.
Vesiculifera concatenola ? Hassall, in Annals of Nat. Hist.,
vol. X. p. 392.
Hah. Cheshunt Common and pond near H ig h g ate:
A . H. H. In a pool between Hook Green and Lamberhurst,
and at Peasmarsh and Henfield: Mr. Jenner.
Sometimes two or three sporangia occur contiguously to
each other. I am not quite sure that this is the species described
in the Annals by me as Vesiculifera concatenata,
h u t believe it to be so. There is not a more distinct species
in the genus.
15. V e s ic u l if e r a B o r is s ii Hass.
Plate L I I . Fig. 7.
Char. Filaments o f nearly the same diameter as those o f