GENUS 5. 



CHICKWEED FAMILY. 



55 



8. Arenaria sajanensis Willd. Siberian 

 Sandwort. Fig. 1784. 



Stcllaria biflora L. Sp. PI. 422. 1753. Not A. bi- 



flora L. 

 Arenaria sajanensis Willd. ; Schlecht. Mag. Naturfr. 



1816 : 200. 1816. 

 Arenaria biflora S. Wats. Bibl. Index i: 91. 1878. 



Tufted, perennial, stems decumbent, glandular- 

 pubescent, 4' high or less, densely leafy below, 

 the flowering upper parts and the branches with 

 1-4 distant pairs of smaller leaves, and erect or 

 nearly so; lower leaves linear, stiff, appressed or 

 ascending, 2" -4" long, glabrous, ciliolate or 

 glandular-pubescent ; flowers about 4" wide ; 

 sepals oblong, glandular-pubescent, obtuse; petals 

 equalling or somewhat longer than the sepals; 

 capsule longer than the calyx, 3-valved. 



Greenland, Labrador and Quebec to Alaska, south 

 in the Rocky Mountains. Northern Asia. Summer. 



9. Arenaria caroliniana Walt. Pine- 

 barren Sandwort. Fig. 1785. 



Arenaria caroliniana Walt. Fl. Car. 141. 1788. 

 Arenaria squarrosa Michx. Fl. Bor. Am. i : 273. 1803. 



Perennial from a deep root, tufted, more or 

 less glandular-pubescent, base woody, flowering 

 stems ascending or erect, 4'-io' high, nearly 

 simple up to the cymose inflorescence. Lower 

 leaves subulate, rigid, 2"-$" long, channeled on 

 the inner surface, keeled by the prominent mid- 

 rib, densely imbricated ; upper leaves similar, 

 distant ; cymes terminal, few-flowered ; pedicels 

 ascending or erect; flowers 5 "-8" broad; sepals 

 ovate-oblong, obtuse, nerveless ; petals oblanceo- 

 late, 3-4 times as long as the calyx; pod short- 

 ovoid, twice as long as the calyx, 3-valved; seeds 

 very nearly smooth. 



In dry sand, southeastern New York, pine barrens 

 of New Jersey, south near the coast to Florida and 

 Georgia. May-July. 



10. Arenaria stricta Michx. Rock 

 Sandwort. Fig. 1786. 



Arenaria stricta Michx. Fl. Bor. Am. i : 274. 1803. 

 Alsine Michauxii Fenzl, Verbr. Alsin. table, p. 18. 



1833- 

 Arenaria Michauxii Hook. f. Trans. Linn. Soc. 



23 : 287. 1867. 



Perennial from a short root, tufted, slender 

 erect or ascending, glabrous, bark green, 6'-i6' 

 high, simple or nearly so to the diffuse cymose 

 bracted inflorescence. Leaves slender, rigid, 

 subulate or filiform, broadest at the sessile 

 base, 4"-io" long, distinctly i-ribbed, spread- 

 ing, with numerous others fascicled in the 

 axils ; pedicels 3"-i8" long ; flowers 4"-$" 

 broad; calyx ovoid-oblong in 'fruit; sepals 

 lanceolate or ovate-lanceolate, acute, 3-ribbed, 

 2" long, about half the length of the petals 

 and slightly shorter than the ovoid pod; seeds 

 minutely rugose. 



In dry rocky places, especially limestone bluffs, 

 Ontario to New Hampshire. Virginia, Minnesota, 

 South Dakota and Missouri. June-July. 



