36 CARYOPHYLLACEAE. [Vor.. II. 
1. Ammodenia peploides (L.) Rupr. 
Sea-beach Sandwort. (Fig. 1512.) 
Arenaria peploides L. ae. Pl. 423. 1753. 
Honkenya peploides Ehrh. Beitr. 2: 181. 1788. 
Ammodenia peploides Rupr. Beitr. Pfl. Russ. Reich. 
2:25. 1845. 
Perennial from long rootstocks, glabrous, fleshy 
throughout, stems stout, tufted, simple or 
branched, erect, diffuse or ascending, 3/-10’ long. 
Leaves sessile, clasping, ovate or oval, acute or 
mucronate, 5’’-10’” long; flowers axillary and ter- 
minal, 3/’-4’’ broad; peduncles stout, 2’’-8’’ long; 
ovary 3-celled (rarely 4-5-celled); sepals ovate, ob- 
tusish, about equalling the petals, shorter than 
the depressed-globose mostly 3-valved pod; seeds 
smooth, short-beaked at the hilum, not strophio- 
late. 
On sands of the seashore, New Jersey to arctic 
America. Also on the shores of northern Europe and 
Asia. Called also Sea Chickweed and Sea Purslane. 
June-July. 
18. SPERGULA L. Sp. Pl. 440. 1753. 
Annual branched herbs, with subulate stipulate leaves, much fascicled in the axils, and 
terminal cymes of white flowers. Sepals and petals 5. Stamens tIoor5. Styles 5, alternate 
with the sepals. Capsule 5-valved, the valves opposite the sepals. Seeds compressed, acute- 
margined or winged. [Latin, (from sfergo) to scatter. ] 
1. Spergula arvensis I. Spurry. 
Corn Spurry. (Fig. 1513.) 
Spergula arvensis I,. Sp. Pl. 440. 1753- 
Slender, glabrous or sparingly pubescent, branch- 
ing at or near the base, erect or ascending, 6’-18/ 
high. Leaves narrowly linear or subulate, 1/2’ 
long, clustered at the nodes in two opposite sets of 
6-8 together, appearing verticillate; stipules small, 
connate; flowers 2’/-3’’ broad, numerous in loose 
terminal cymes; pedicels slender, divaricate; sepals 
ovate, 114’/-2’’ long, slightly longer than the 
petals; stamens Io or 5 in flowers on the same 
plant; capsule ovoid, longer than the calyx. 
In fields and waste places, frequent as a weed 
throughout eastern Canada and the Eastern and Mid- 
dle States, and locally westward. Adventive or natu- 
ralized from Europe. Called also Sandweed. Summer. 
19. TISSA Adans. Fam. Pl. 2: 507. 1763. 
[Bupa Adans. Fam. Pl. 2: 507. 1763.] 
[SPERGULARIA Pers. Syn. 1: 504. 1805. ] 
Low annual or perennial herbs, mostly with fleshy linear or setaceous leaves, often with 
others clustered in the axils, and small pink or whitish flowers in terminal racemose bracted 
orleafy cymes. Stipulesscarious. Sepals5. Petals the same number, rarely fewer, or none, 
entire. Stamens 2-10. Ovary I-celled, many ovuled; styles 3. Pod 3-valved tothe base. Seeds 
reniform-globose or compressed, smooth, winged or tuberculate. [Name unexplained. ] 
About 20 species, of wide geographic distribution, most of them inhabitants of saline shores or 
salt marshes. 
Species of salt marshes or sea beaches; leaves very fleshy. 
Pedicels 114-2 times the length of the sepals; flowers pink. 1. 7. marina. 
Pedicels 2-4 times the length of the sepals; flowers pale or white. 2. T. Canadensis. 
Species mostly of dry sandy soil; leaves scarcely fleshy. 3. T. rubra. 
