$12 PROCEEDINGS OF THE AMERICAN ACADEMY. 
num salinum, Fries, Mant. iii. 34. ZL. marinum, Kindberg, |. ¢. 18. 
L. medium, Wats. Bibl. Index, 103 in part. Zissa marina, Britton, 
1. c. xvi. 126. — Common on both the Atlantic and Pacific coasts, also 
occurring upon the Gulf coast, and not infrequent about salt lakes 
and in alkaline regions of the interior, especially westward. 
Var.? minor. Smaller, 2-3 inches high: flowers smaller and 
very numerous, on short pedicels (3-2 lines in length) and conse- 
quently rather densely aggregated. — Buda marina, var.? minor, Wats. 
in Gray, Man. ed. 6, 90.— Coast of New Hampshire and Massachu- 
_ setts. An ambiguous form suggesting the western S. tenuis but smaller 
and with a better developed corolla. 
S. borealis. More slender and in well developed specimens more 
diffusely branched than the preceding, 2—5 inches high, glabrous: leaves 
opposite, seldom fascicled; stipules ovate, broader than long, obtuse 
or obtusish: sepals ovate, 1-1} lines long, very obtuse: petals shorter, 
white or pink: capsule ovate-oblong, usually nearly or quite twice as 
long as the calyx ; seeds usually wingless and nearly or quite smooth. — 
Arenaria rubra, 8, Michx. Fl. i. 274. (Dr. Britton, who has examined 
the type of Michaux’s variety, pronounces it identical with this species.) 
A. Canadensis, Pers. (Syn. i. 504), the oldest specific name, but not to 
be selected for use under Spergularia, since S. Canadensis has been 
used by Don (Mill. Dict. i. 426) for a “pilose” and “ rather hispid” 
plant, extending from “Canada to Carolina” and being doubtless 
S. salina, Presl; Lepigonum medium, Wats. Bibl. Index, 103 in 
part. Tissa salina, Britt. 1. c. xvi. 127. Buda borealis, Wats. & 
Coulter, in Gray, Man. ed. 6, 90. — Sea-beaches and tidal marshes, 
‘Maine to Labrador. 
* * * * Stout and fleshy perennials of the Pacific slope: flowers large. 
S. macrotheca. Smooth to densely glandular-tomentose : stems 
spreading, ascending, 8-15 inches in height; leaves linear, acute, 
mucronate, 8 lines to 2 inches in length, about a line in breadth 5 
internodes more or less developed, usually }—-1 inch long: floral bracts 
resembling the leaves: inflorescence inclined to be racemiform ; pedi- 
cels 4-12 lines in length, spreading or more or less deflexed: sepals 
lanceolate, acutish or somewhat attenuate to an obtuse point, thick 
in the middle, nearly smooth or viscid-glandular, conspicuously me™- 
branous-margined: petals roseate, shorter than the sepals: capsule 
_oblong-ovoid, acutish, nearly equalling the sepals. — Arenaria macro- 
theca, Hornem. ex Cham. & Schlecht. Linnea, i. 53. Lepigon — 
_ macrothecum, Fisch & Mey. Ind. Sem. Petr. iii. 14; Kindberg, 
 Monog. 16, t. 1, £1; Wats. Bibl. Index, 103. L. Chilense, Fisch © 
