140 Rhodora [JULY 
The plants of Subclass B are more restricted in their distribution 
n the more southerly elements of Subclass A, being confined to the 
silicious and boggy coastal strip represented by the New Jersey Pine 
Barrens, southern and eastern Long Island, Cape Cod and adjacent 
coasts, sandy portions of Nova Scotia, Sable Island, and silicious 
and other sterile areas of Newfoundland, only in the most exceptional 
cases found far inland or northward in New England or eastern Canada. 
Several of these plants are enumerated on p. 135, among the most not- 
able of them being Schizaea pusilla, Potamogeton Oakesianus, Ammo- 
phila arenaria, Carex hormathodes, C.. silicea, C. sterilis, Juncus effusus, 
var. conglomeratus Engelm. (known in America only from eastern 
Newfoundland, southeastern Connecticut, and the Pine Barrens of 
New Jersey), Spergularia rubra, Arenaria peploides, var. robusta, 
Corema Conradii, Elatine americana, Hudsonia ericoides, Myriophyllum 
tenellum, Gaylussacia dumosa, var. Bigeloviana, and Utricularia clan- 
destina. The distribution of this group is represented on plate 90, 
wtf the ranges of Schizaea pusilla (fig.9) and of Corema Conradit 
(fig. 10). 
CLASS IV. ENDEMIC PLANTS OR SPECIES UNKNOWN 
ON THE AMERICAN CONTINENT. A small class, 16 plants = 
2 per cent of the Newfoundland flora, divided into 
Supciass A. Enpemic Puants. 8 plants = 1 per cent of the 
Newfoundland flora, chiefly varieties of continental types. 
Susciass B. Otp Worip Types AS YET UNKNOWN ON THE AMER- 
ICAN CONTINENT. 8 species = 1 per cent of the Newfoundland flora. 
These — such species as Montia rivularis Gmel., Sarifrage 
etc., are mostly either technical or obscure boreal species 
which are o bkely to be found in Labrador or are known from Greenland. 
Briefly summarized, the analysis of the indigenous flora is 
Per cent of 
— Plants lit Flora 
Tr ees a 
Claes 1.) Babe Tyan. a a | 466 | 593 
Class II. Western or Canadian Types not reach- 
ing Labrador. a 27 33 
Class III. Southwestern Types............... 274 35 
Class IV. Endemic Plants or Species Unknown 
on the Continent. 00. 3 ee. oe 16 : 
eae 
783 100 
Oe hentne, Geem tent 
