The colour of the filaments in this, as in other species,
would appear to be subject to considerable v a rie ty ; In their
youngest condition, the filaments are stated to be coerulescent;
in their more advanced state, they are purple, and invariably
so Avhen dried, exhibiting on paper, which they often stain,
some degree of gloss.
The Leda capucina of Bory, Mougeotia capucina of Agardh,
is probably identical with this species.
3 . S t a u r o c a r p u s q u a d r a t u s Hass.
Plate X L V I I I . Fig. 1.
Char. Filaments o f less diameter than those o f the preceding
species, bluish green. Sporangia quadrangular.
Mougeotia quadrangulata Hassall, in Annals of Nat. Hist,
vol. xii. p. 185. pi. vii. fig. 3.
Hah. Cheshunt, and various places in the neighbourhood:
A. H H . Ashdown Forest, and on Crawley Down, near
Turner’s M ill: Mr. Jenner.
There Is no difficulty in distinguishing this from all other
species hitherto recorded.
4. S t a u r o c a r p u s v ir e s c e n s Hass.
Plate X L V I I I . Fig. 2.
Char. Filaments smaller than those o f St. quadratus,
usually o f a grass green colour. Cells before conjugation
about eight or ten times as long as hroad, but after that
period becoming much longer. Sporangia cruciform.
Staurocarpus affinis Hassall, in Annals of Nat. Hist,
vol. xii. p. 185. pi. vii. fig. 4.
Hab. Pool near Eoyden, F s s e x : A . H. H.
This species comes very near to St. quadratus, from which
it is distinguished by Its somewhat finer filaments, and cruciform
sporangium, the sporangia in St. quadratus being
square.
5. S t a u r o c a r p u s g r a c il is Hass.
Plate X L IX . Fig. 1.
Char. Filaments more slender than those o f St. virescens, and
usually o f a green colour. Cells many times longer than
broad. Sporangia cruciform,
St. gracilis Hassall, in Annals of Nat. Hist. vol. xii. pi, vii.
fig. 5.
Hab. Penzance: Mr. Ralfs. Waterdown Forest, Broadwater
Forest, Fisher’s Castle, Crowborough W a rren :
Mr. Jenner. High Beech, Hertford Heath, Wormley,
West Fnd, and Wanstead Flats, F s s e x ; A. H. H.
This Is an abundant species, and very distinct from any of
the others. I t was found by Mr. Ealfs, Mr, Jenner, and
myself, within a few days of each other.
6. S t a u r o c a r p u s g e a c il l im u s Hass.
Plate X L IX . Fig. 2.
Char. Filaments more slender than those o f St. gracilis, and
usually o f a green colour. Cells very many times as long
as broad. Sporangia cruciform, and about one h a lf the size
o f those o f St. virescens.
St. gracillimus Hassall, in Annals of Nat. Hist. vol. xii.
p. 185. pi. 7, fig. 6.
Hab. Hertford Heath and H igh Beech: A. H. H. Eack-
ham Bogs, Parham P ark , near Storrington, and Ashdown
Forests: Mr. Jenner.
This species I have myself met with several times, but did
not at first recognize its distinctness, of which, however, I
now entertain no d o u b t: and it was only on the receipt of a
beautiful sketch from Mr. Jenner, accompanied by remarks,
that I examined thoroughly Into the matter, and satisfied
myself of its entire distinctness.