XXVI. Caryophyllaceae. Pink Family

Herbs with bland and inert juice, the stems usually swollen at the nodes; leaves opposite, entire, often united at the base; flowers symmetrical, with or without petals; fruit a capsule opening by valves at the summit.

I. Arenaria. L.

1. A. lateriflora. L. Blunt-leaved Sandwort.

2. A. capillaris var. nardifolia. (Ledeb.) Regel. Narrow-leaved Sandwort.

3. A. verna var. propinqua. (Richards.) Fernald.

Vernal Sandwort.

4. A. sajanensis. Willd. One-Howered Sandwort. II. Stellaria. L.

1. S. longipes. Goldie. hong-stalked Stitchwort.

2. S. borealis. Bigel. Northern Stitchwort. III. Cerastium. L.

1. C. arvense. L. Field Mouse-ear Chickweed.

2. C. alpinum. L, Alpine Mouse-ear Chickweed, IV. Lychnis. (Tourn.) L.

1. L. apetala. L. Nodding Pink.

2. L. Drummondii. (Hook.) Wats. Drummond's Pink. V. Silene. L.

1. S. Macounii. Wats. White Campion.

2. S. Lyallii. Wats. Lyall's Catchfly

3. S. acaulis. L. Moss Campion.

XXVII. Portulacaceae. Purslane Family

Insipid herbs; leaves entire, succulent, simple; flowers axillary or terminal, essentially regular but unsymmetrical, sepals fewer than the petals; fruit a capsule.

I. Lewisia. Pursh.

1. L. rediviva. Pursh. Bitter-root. II. Oreobroma. Howell. Eryth.

1. O. cotyledon. Howell. Striped Oreobroma. III. Claytonia. (Gronov.) L.

1. C. lanceolata. Pursh. Lance-leaved Spring Beauty.

2. C. megarrhiza. (Gray.) Parry. Alpine Spring Beauty.

3. C. parvifolia. Dougl. Small-leaved Spring Beauty.