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2. §. nrrens Nutt. Flowers on short pedi- 
cels.— ©. Tamalpais. Spring. 
3. Arenaria L. Sanpworr. 
Sepals unchanged in fruit. Petals entire. 
Stamens 5 or 10. Stigmas 3. Capsule ovoid, 
dehiscent by 3 valves, these valves sometimes 
2-parted. Flowers white. 
1. A. Doverasn Torr. & Gray. Valves of 
the capsule entire; leaves filiform; sepals 
acute, 3-nerved.—©. Tamalpais. Summer. 
2. A. Cauirornica Brewer. Valves of the 
capsule entire; leaves lanceolate; sepals acute, 
3-nerved.—@©. Oakland Hills. Spring. 
3. A. PALUSTRIS Watson. Valves of the 
capsule entire; leaves linear; sepals obtuse, 
without nerves. Formerly in a marsh near 
San Francisco, where at present it is extinct. 
Has not been found in any other locality. 
4. A. macropaytta Hook. Valves of the 
capsule 2-cleft; sepals acuminate, 1-nerved. 
2f.—Saucelito. Summer. 
4, Sagina L. Puaruworr. 
Sepals 4 or 5. Petals4or5. Stamens twice 
4 or twice 5. Stigmas 4 or 5, alternate with 
the sepals. Capsule dehiscent in 4 or 5 valves, 
opposite to the sepals.—©. 
1. §. occipenTaLIs Watson. Petals white. 
San Francisco. Spring. 
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