48 , 
ine. Hydnum Scheidermayeri, Henfl. Specc., found at Potsdam, 
ew York, on dead apple tree wood seem to be identical with this. 
Polysaccum tuberosum, /r., from Bohemia. The only representative 
of this genus as yet credited to this country is P. Pisocarpium, Fr, 
reported trom Carolina by Ravenel and found also at Newfield, 
New Jersey. No. 63 is through some error given as Diatrype 
platystoma, Zlis. This is the Sphaeria platystoma, Sz. and whether 
properly referred to Diatrype or Hypoxylon, should still be credited 
to Schweinitz. The old genera Peziza and Sphaeria appear here, 
as in all recent continental European works, broken up into a great 
number of new genera the permanency and propriety of which, to 
say the least, is doubtful. It is designed by the author to issue 
two Centuries of the above work each year. Price per Century, 
12s. sterling. , 
§ 39. Virginian Flora.—During a.recent short visit to the shores 
of the Chesapeake on Mob-jack Bay, just north of the mouth of York 
River, I had an opportunity, notwithstanding frequent showers, to 
notice some of the vegetation. A brief account of my observations 
may interest our northern readers. The surface is generally level 
and the soil a sandy loam. The prevalent weeds in the fields were 
Ambrosia artemisiefolia, (Hog-weed), Erigeron Canadense, 
(Horse-weed), Solanum Carolinese, (Horse-Nettle), with consider- 
able Artemisia caudata, Centaurea calcitrapa, L.,reported in Gray’s 
Manual at Norfolk, has extended up along the shores, and is becom- 
ing a serious nuisance. -Baccharis and Myrica cerifera are abun- 
dant along the fences and road sides and strike a northerner by 
their size. Tecoma radicans, Juss. (Trumpet Creeper,) seems to 
take the place of Rhus Toxicodendron and climbs over everything. 
I saw but little of the Poison-vine, and that mainly in the swamps. 
The prevailing tree is Pinws Tada (Old-field Pine). Pinas inops is 
frequent and there isa variety of oaks, white, red, black and 
scrub. Quercus virens, Ait., (Live Oak,) reaches as tar north as 
the shore of Mob-jack Bay, how much farther I did not learn. 
Quercus Phellos, 1.., (Willow Oak,) is a common tree and sometimes 
reaches a great size. Red Maple occurs sparingly in the swamps. 
The Crape Myrtle (Lagerstreemia Indica) is very generally culti- 
vated and was in fine bloom at the time of my visit. 
In old fields Linaria Elatine, Mill., was frequent, and. Poly- 
premum procumbens, L., everywhere. Along the ditches Ruellia 
strepens, L., Conoclinum celestinum, DC., and Diodia Virginica 
L., were common. In more sandy places I found the other Diodia 
Stylosanthes, Clitoria, Chrysopsis yraminifolia, Nutt., Desmodium 
strictum, DC., with other Desmodia and Lespedezee, two species of 
Lechea, various Polygalas, such as P. Nuttallii, P. brevifolia, P. 
verticillata, &e., and, to my delight, P. inecarnata, L., which, on 
account of its height, about a foot, and apparently bare stems, I did 
not at first recognize for a Polygala, and the long looked for and 
seemingly distinct P. ambigua, Nutt., Cacalia atriplicifolia, V., 1 
had not expected to findin this region. Pluchea bifrons, DC., as 
well as P, camphorata were not intrequent. Polymnia Uvedalia, 
L.. Verbesina Siegesbeckii, Mchx, Pyrrhopappus Carolinianus, 
