30 CARYOPHYLLACEAE. (Vou. II. 
3. Sagina decimbens (Ell.) T.& G. Decumbent Pearlwort. (Fig. 1496.) 
Spergula decumbens Ell. Bot. S. C. & Ga. 1: 523. 1817. 
i Sagina decumbens T. & G. Fl. N. A. 1:177. 1838. 
Sagitna subulata T. & G. Fl. N. A. 1:178. 1838. Not Presl, 1826. 
Annual, tufted, stems decumbent or ascending, 2’-4’ long, gla- 
i brous or minutely glandular-pubescent above. Leaves narrowly 
linear, sometimes bristle-tipped, 3’’-5’’ long; peduncles filiform, 
3//-15’’ long; flowers 1/’-1}4’’ broad; sepals, petals and styles 5; 
stamens 5 or 10; petals equalling or shorter than the calyx; pod 
Q ovoid-oblong, nearly twice as long as the calyx; sepals acutish or 
obtuse. 
In dry soil, eastern Massachusetts to Illinois, south to Florida, Mis- 
souri and Louisiana. March-May. 
Sagina decumbens Smithii (A. Gray) S. Wats. Bibl. Index, 1: 105. 1878. 
Sagina subulata var. Smithii A. Gray, Man. Ed, 5, 95. _1867. 
1 Slender, stems erect or nearly so; flowers apetalous. Plant with the 
a aspect of S. apefala, but the parts of the flowerin 5’s. Southeastern 
| Pennsylvania and southern New Jersey. 
4. Sagina saginoides (L.) Britton. Arctic 
Pearlwort. (Fig. 1497.) 
Spergula saginoides I,. Sp. Pl. 441. 1753- 
Sagina Linnaet Presi, Rel. Haenk. 2:14. 1835. 
Sagina saginoides Britton, Mem. Torr. Club, 5: 151. 1894. 
Perennial, glabrous, tufted, 1/-4’ high, few-flowered or 
the flowers solitary at the ends of the stems. Leaves 
linear-subulate, or filiform, 2’’-5’’ long, acuminate or mu- 
cronate; flowers 1 's//-2%4’’ broad; sepals, petals and styles 
5; stamens Io; sepals oval, obtuse, half the length of the 
ovoid-oblong capsule. 
On rocks, Labrador, Anticosti and in arctic America. Also 
in the higher Rocky Mountains, south to Colorado and Utah, 
and in California. Also in alpine and arctic Europe and Asia. 
Summer. 
5. Sagina nodosa (L.) Fenzl. Knotted Pearl- 
wort. (Fig. 1498.) 
Spergula nodosa \,. Sp. Pl. 440. _ 1753. 
Sagina nodosa Fenzl, Verbr. Alsin. 18. 1833. 
Perennial, tufted, erect or decumbent, 2/-6’ high, stems 
sparingly branched, slender, glabrous, or slightly glandular- 
pubescent above. Lower leaves linear, teretish, 4’’-8’’ long, 
mucronulate, the upper shorter and with clusters of minute 
ones in their axils; flowers few, about 3’’ broad, terminating 
the stem and branches; sepals, petals and styles 5; stamens 
10; peduncles 3’/-8’’ long; sepals ovate-oblong, obtuse, 1/” 
long; petals obovate, longer than the calyx, as is also the 
ovoid pod. 
In wet, sandy places, coast of New Hampshire and Maine to 
Greenland; shores of Lake Superior, Lake Winnipeg and of the 
Arctic Sea. Also in northern Europe and Asia. Summer. 
15. ARENARIA IL. Sp. Pl. 423. 1753. 
[ALSINE Wahl. Fl. Lapp. 127. 1812. Not L. 1753.] 
Annual or perennial, mainly tufted herbs, with sessile leaves, and terminal cymose or 
capitate, rarely axillary and solitary, white flowers. Sepals 5. Petals 5, entire or scarcely 
emarginate, rarely none. Stamens 10. Styles generally 3 (rarely 2-5). Ovary 1-celled, 
many-ovuled. Capsule globose or oblong, dehiscent at the apex by as many valves or teeth 
as there are styles, or twice as many. Seeds reniform-globose or compressed. [Latin, sand, 
in allusion to the habitat of many species. ] 
About 150 species, of wide geographic distribution; not common in tropical regions. 
