CARYOPHYLLACE^. (PIXK FAMILY.) 49 



1. A. squarrosa, Fer.zl. Stems tufted ; leaves subulate, rigid, tliose of 

 the glandular flowering stems distant, of the sterile stems imbricated, with 

 spreading tips ; sepals ovate, obtuse, shorter than the capsule. (Areiiaria squar- 

 rosa, Michx.) — Dry sand-hills, West Florida and northward. April and May. 

 y. — Stems 6'- 10' high. Cymes few-flowered. Pedicels rigid. 



2. A. glabra. Gray. Smooth ; stems filiform, sparingly branched ; leaves 

 tender, narrow-linear, obtuse, spreading ; cyme few-flowered, spreading ; sepals 

 oblong, obtuse, faintly 3-ribbed, as long as the capsule. (Arenaria glabra, Micli.r.) 

 — Mountains of North Carolina. July. H. ? — Stems tufted, 4'- 6' high. Cymes 

 leafy. Pedicels setaceous. Leaves ^' - I' long. 



3. A. patula, Gray. Minutely pubescent; stem filiform, diffusely branched 

 from the base; leaves narrow-linear, spreading; cyme spreading, few -many- 

 flowered ; pedicels very slender ; petals spatulate, cmarginate, twice the length 

 of the lanceolate acute 3-5-nerved sepals. (Arenaria patula, Michx.) — Rocks 

 around Knoxville, Tennessee, and northward. — Stems C- 10' high. 



4. A. Michauxii, Fenzl. Smooth; stems tufted, erect or diffuse, straight; 

 leaves linear-subulate, erect, spreading or recurved, much clustered in the axils; 

 cymes spreading or contracted ; petals oblong-obovate, twice as long as the rigid 

 ovate acute 3-ribbed sepals. (Arenaria stricta, Michx.) — Rocks and barren soil, 

 Georgia and northward. May and June. — Stems 3' - 10' high. 



5. A. brevifolia. Stems smooth, not tufted, erect, filiform, simple, 

 2-5-flowercd; leaves minute (l"-2"), erect, lance-subulate; sepals oblong, 

 obtuse, as long as the capsule ; petals twice as long as the sepals. (Arenaria 

 brevifolia, Nutt.) — Rocks in the upper districts of Georgia. (T) — Stems 2' -4' 

 long, bearing 3 or 4 pairs of leaves. Flowers small, on filiform peduncles. 



11. ARENARIA, L. Sandwort. 

 Petals 1-5, or none. Styles 2-4. Capsule opening above by as many 

 valves as there are styles, each valve soon splitting into two pieces. Otherwise 

 like Alsine 



1. A. diffusa. Ell. Downy; stem elongated, prostrate, alternately short- 

 branched ; leaves lanceolate ; peduncles longer than the leaves, lateral, re- 

 flexed in fruit ; petals 1-5, shorter than the sepals, often wanting. (Stcllaria 

 elongata, Nutt. Micropetalon lanuginosum, Pers.) — Shady banks, Florida to 

 North Carolina and westward. May- October. IJ. — Stems 1° -4° long. 



2. A. Serpyllifolia, L. Downy; stems diffusely branched ; leaves small, 

 ovate, acute, the lowest narrowed into a petiole ; flowers cymose ; petals much 

 shorter than the lanceolate acuminate sepals. — Waste places, Florida and north- 

 ward. Introduced. April and May. (I) — Stems 6'- 12' long. Leaves ^' long. 



12. STELLARIA, L. Chickweed. Starwort. 



Sepals 4 - 5. Petals 4-5, 2-cleft, or 2-parted. Stamens 3-10. Styles 3-5, 

 opposite the sepals. Capsule 1 -celled, opening by twice as many valves as there 

 are styles, many-seeded. — Stems weak. Flowers white, on terminal peduncles, 

 becoming lateral in fruit. 



5 



