38 BOTANICAL INFORMATION. 
tribes, sub-tribes, and genera; but they have probably 
found, as we did, in the case of the “ Species Filicum,” that 
this is better accomplished at the close than the beginning of 
so laborious a work, in which our ideas are liable to alter as 
we proceed. The present number comprises one hundred 
and forty-four pages, and commences with the first tribe of 
Hepatice, the Jungermannie. The first tribe is, GyMNomMI- 
TRIA, Nees, including the genera, —1. Haplomitrium, Nees; 
. Gymnomitrion, Nees; 3. Acrobolbus,* Nees; 4. Sarco- 
scyphus, Corda; 5. Allicularia, Corda. Sub-tribe II: Celo- 
caules, Nees, including 6. Gottschea, Nees; Sub-tribe III: 
JUNGERMANNOIDEz, Nees, including 7. Plagioschila, Nees et 
Mont. ; Scapania, Lindbg ; and 9. Jungermannia, L., which 
breaks off at the 131st species. 
On Azolla and Salvinia, by W. Grirriru, Esa. 
This is the title of a long and most elaborate and profound 
Memoiron Azolla and Salvinia, by Mr. Griffith, published in 
the number for July, 1844, of the Calcutta Journal of Nat. 
History. To it we must refer our readers; for it would not 
be easy, within the limits of our notice, to give a summary 
of the result of the author's observations. In some degree, 
however, it is expressed in his character of the family SaL- 
VINIDÆ, Bartl.: “Plante natantes ramose. Radices plu- 
moss. Folia opposita, pagina supera papillosa. ORGANA 
MASCULA : pili articulati, pedicelli ovuligeri 3 vel filamenta 
moniliformia partium novellarum. ORGANA rc. : Ovula 
atropa (submersa) solitaria v. per paria. Capsule submersæ, 
apice mieropyle notate;—alie (infima cujusque paris vel 
* À new genus of Nees, founded upon a plant detected by Mr. Wilson in 
1829, near Killarney, Ireland, Jungermannia Wilsoni of Dr. Taylor's mss. 
But we do notfind any such plant in the Flora Hibernica, published in 
1836, and to which we have reason to know that Dr. Taylor communicated 
all the native Jungerma“niæ then known to him. 
