928 
CRYPTO GAM I A. 
Class XXIV. 
15041 rosea Lyngb. 
15042 montana Ag. 
15043 cruenta Ag. 
rosy 
mountain 
bloody 
gregarious 
leaf-like 
thin crust 
... sum. Pk on lichens Grev. crypt, t. 51 
li sum. R.G alpine rocks Eng. bot. t. 2195. 
... all sea. R.Br shady places Y.. hot. t. ISQO. Tremella 
2266. ECHINEI/LA. Ag. Echinella. 
15044 articulata Ag. jointed thin film 
2267. ALCYONl'DIUM. Ag. Alcyonidhim. 
15045 diaphanum Ag. transparent fleshy mass 
15046 flavescens Ai^. yellowish fleshy mass 
15047 defractum Ag. broken vermicular 
Sp. 1—3. 
jn.jl G 
lakes 
Sp. 3—7. 
6 sum. Y ocoan 
3 sum. Y ocean 
4 sum. Y.Pk ocean 
E.b. t.l378. C.echinulata 
Eng. bot. t. 263. Ulva 
Fl. dan. 1. 1245. Ulva 
Eng. bot. 1. 1626. Ulva 
2268. NOS'TOC. Ag. 
15048 commune Ag. 
15049 pruniforme Ag. 
15050 splia2'ricum Ag. 
15051 verrucosum Ag. 
NOSTOC. 
common lobed mass 
plum-shaped little balls 
spherical little balls 
warted gregarious 
2269. CORYNE'PHORA. Ag. Corynephora. 
15052 marina Ag. marine lobed mass 
Rivularla tuberiformis E. B. 
2270. RIVULA'RIA. Ag Rivularia. 
15053 atra Ag. dark minute dots 
15054 angul6sa Ag. angular little balls 
15055 calcarea JS. ^. calcareous conflu.mass. 
Linckia dura Lyngb. 
2271. CH^TO'PHORA. Ag CnffiTopnoRA. 
15056 tuberculosa Ag. warty balls 
15057 endiviaefolia Ag. endive-leaved branched 
crassa Ag. thick-leaved branched 
2272. SCYTHYME'NIA. Ag. Scythymenia. 
15058 rupestris Ag. rock broad 
Sp. 4—22. 
2 sum. Ol.G damp places Rbot. t. 461. Trcmella 
i sum. Ol.G lakes 
I sum. OI G still waters 
1 april Ol.G rocks 
Sp. 1. 
li aug. Br sea shore Eng. bot. 1. 1956 
Sp. 3—11. 
Oct. D.G sea plants Eng. bot. 1. 1798 
sum. DIG ditches Eng. bot. t. 968 
all sea. G lakes & mar. Eng. bot. 1. 1799 
Sp. 2—12. 
A sept. G ditches E. bot. t.2366. Rivularia 
2 sum. G still waters Lyngb. phyt. dan. t. 65 
lakes 
E. b. t. 967. U.incrassata 
Eng. bot. t. 2194 
15046 
History, Use, Propagation, Culture, 
Bauer reTering it to a genus of Fungi, called Uredo. We have lately seen a curious paper upon this subject, 
by Professor Agardh, of Lund, whose opinions upon all matters connected with the lower orders of vegetation 
demand deep attention. 
" That snow occasionally assumed a red color, had long been a fact of which there could be no doubt; and 
that water was also under particular circumstances stained with red, we have the popular traditions of showers 
of blood, and water changed to blood, to attest. In the year 1G08, a shower of blood fell near Aix, in France, 
which was examined by Peiresc, and found to be caused by insects; and to the same cause was undoubtedly 
to be ascribed the bloody rain that fell at Schonen, in 1711, which the learned Bishop Swedbcrg looked upon 
as a supernatural phenomenon, and a direct sign of the anger of the Divinity. The red pools which are occa- 
sionally met with, even in this country, are generally stained by the presence of an immense number of 
animalcules, called Daphinia Pulex, or Cyclope quadricornis. The red stains sometimes seen upon the sea- 
shore are occasioned by a particul?.r sort of Fucus. Professor Agar;ih proceeds to observe, that the red snow 
is very common in all the alpine districts of Europe ; where it is probably, for the most part, of the same 
nature as that brought from the North Pole by Captain Ross. Saussure saw it in abundance upon Mount 
Brevern, in Switzerland, and elsewhere ; Ramond found it on the Pyrenees, and Sommcrfeldt in Norway. In 
March, 1808, the whole country about Cadore, Belluno, and Feltri, was in a smgle night covered to the depth 
of twenty centimetres with a rose-colored snow ; at the same time a similar shower was witnessed on the 
mountains of Valtelin, Brescia, Carinthia, and Tyrol. But the most remarkible red-snow shower was that 
which fell on the night between the 14th and 15th of March, 1823, in Calabria Abruzzo, in Tuscany, and at 
Bologna, and upon the whole chain of the Appennines. "We may add, that both snow and ice were seen 
stained with red, green, and blue, by the late expedition under Baron Wrangel to the Frozen Ocean. 
" With this information before liim, Professor Agardh proceeds to consider the nature of this remarkable 
substance, which he concludes, with Brown, to be referable to the lowest order of Algas, and to stand as a 
distinct genus, which he calls Protococcus, upon the very limits of the animal and vegetable kingdoms. 
Saussure, indeed, from finding that the red snow of the Alps gave out, when burnt, a smell like that of plants, 
concluded that it was of vegetable origin ; but he supposed it to consist of the farina of some plant, although 
he could neither account for its having ascended to such elevated regions, nor mention a plant whose farina 
was of that color. 
" Besides the plant called Palmella cruenta, which is similar in its structure to the red-snow plant, other low 
vegetable productions have been noticed by different authors, as possessing a similar color. Such are the 
Lepraria Kermesina, which, by the way, is considered only a particular state of the red-snow plant itself, and 
the Byssus cobaltiginea. These are always found in situations in which they are exposed to the intense action 
of light, such as vast plains of snow, or masses of glittering limestone. Whence it is inferred, that the color 
of the red snow is attributable to the action of light, modified in some mysterious manner, by the nature of 
the body on which it strikes. In confirmation of which hypothesis, it is remarked, that when the Lepraria 
