46 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
characteristic of the soutliern Coastal Plain, but themselves extend- 
ing beyond its geological limits, following the sandy or acid-peaty 
soils northward and inland. These total 24 species = Hi per cent, of 
the flora. 
To typify this subclass we cai) cite: Panicum huachucae Ashe, 
Eriocanlon scytangulare With., Juncus canadensis J. Gay, Sisyrin- 
chium. (jramincuni Curtis, Calopogon imlchdlus (Sw.) R. Br., Pyrus 
arbutifolia (L.) L. f., xav. atropurpurea (Britton) Robinson, Ilex verti- 
cillata (L.) Gray, Myriophyllum tenellum Bigel., Utrlcularia cornuta 
Michx., Lobelia Dortmanna L. 
Subclass C. Southern Coastal Plain species ranging from Texas, 
Florida, the Carolinas, or New Jersey northward along the sandy 
coastal strip. Long Island, Nantucket, Cape Cod, to Sable Island, to 
Newfoundland, or Prince Edward Island, uncommon or unknown in- 
land in continental eastern Canada. These total 23 plants = 15 
per cent, of the flora. It is noteworthy that the endemic fresh-water 
sponge, Ueteromeyenia macoimi Mac Kay, has as its nearest relatives 
H. ryderi, var. haleni, ranging from Florida to New Jersey, and H. 
ryderi, var. walskii from Gilder Pond, Mount Washington, Massa- 
chusetts. 
This subclass contains Ammophila hreviligulaia Fernald, Agropyron 
rcpens (L.) Beauv., var. pilosiim Scribn., Carex silicea Olney, Carex 
hormathodes Fernald, Juncus articulatus L., var. ohtusatus Engelm., 
Habenaria lacera (Michx.) R. Br., Myrica carolinensis Mill., Tillaea 
aquatica L., Rosa virginiana Mill., Viola primulifolia L., Ccntuncu- 
lus miniinns L., Teucrium canadense L., var. liftorale (Bicknell) Fer- 
nald, Limosella stibulafa Ives, and Plantago major L., var. intermedia 
(Gilibert) Dene. 
Class III. Endemic Plants or Species unknown on the American 
Continent. — This includes 10 plants = 7 per cent, of the flora. 
Subclass A. Endemic Plants. — This includes 6 plants = 4 per 
cent, of the flora. It is notable that in no case were the characters 
of the endemic plants strong enough to be considered specific; in every 
case they had to be treated as of formal or varietal rank. The six 
endemic plants are: Juncus pelocarpus Mey., var. sahulonensis St. 
John, Calopogon pulchellus (Sw.) R. Br., f. latifolins St. John, Lathy- 
rus palustris L., var. retusus Fernald & St.Joh.n,Epilobium molle Torr., 
var. sabulonense Fernald, Bartonia iodandra Robinson, var. sabul- 
onensis Fernald, Hieraciiim scabrum Michx., var. leucocaule Fernald 
& St. John. 
