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PROTOCOCCUS NIVALIS.
Crimson Protococcus.
C l a s s a n d O r d e r CRYPTOGAMIA ALG*E, im i i .— N a t . O r d . ALGM, J uss.
G EN ERIC CHARACTER.
Glohuli aggregati, nudi, granulis farc li, in gelatina hyalina imposita.
Globules aggregated, naked, containing granules, sessile upon a transparent
gelatinous mass.
S P E C IF IC CHARACTER.
P rotococcus n iv a l i s ; globulis exacte splimricis, minutissimis, vivide purpuréis;
gelatina pallida expansa.
P. globules exactly spherical, very minute, fine purple r e d ; gelatinous mass
pale, spreading.
P rotococcus n iv a lis , Ag. Syst. Alg. p . 13.
P rotococcus k e rm e s in u s , Ag. in Act. Acad. Nat. Cur. v. 12. p. 749-
P almella n iv a lis , Hook. Bot. App. Parry’s 2d Voyage, ined.
P almella, Hook, in Edinb. Journ. q f Science, v. 1. p . 383.
U redo n iv a lis , Bauer, in Journ. o f Science and Arts, v . 7- p- 2 2 2 . t. 6.—Vid.
Tab. ead. in Broivn’s Bot. Schrift. cur. Nees, v . 1. fig. su p .
L e p r a r ia kermesina. Wrong, in Vet. Acad. Handl. 1823, p. 71- t. 3 Vid.
tab. ead. in Brown’s Bot. Schrift, 1. c. fig. inf.
A lgarum g e n u s ?? Confervis simplicissimis et Tremellaa cruentse (Eng.
Bot.) quodammodo affine?? Brown, List o f Plants Ross’s Voy. ed. 2.
T e r r e rouge de la nelge, Sauss. Voy. v. 2. p. 44.
Had. “ On the borders of the lakes of Llsmore, spreading abundantly over
the decayed reeds, leaves, &c. at the water's ed g e ; b u t in greater perfection
on the calcareous rocks within the reach of occasional inundation
; more or less perfect at all seasons of the year.”—Captain Car m
ic h a e l .
Plant composed of an innumerable multitude of globules, seated upon a colourless
gelatinous stratum. Globules exceedingly minute, sessile, crowded,
exactly spherical, fine purple-red or garnet colour. In their young
state, they are mostly surrounded with a transparent border, which gradually
disappears as the globules attain their full siz e: they are then
almost opaque, brilliant, nearly uniform in size. In a good light, the
surface appears reticulated, which is owing to enclosed granules. Granules
about 6-8 in number, globose, escaping from the globules by a
spontaneous rupture, sometimes singly, at others several adhering toge-
VOL. IV.