CARYOPHYLLACEAE. [VOL. II. 



3. Arenaria Hookeri Nutt. Hooker's 

 Sand wort. (Fig. 1501.) 



Arenaria Hookeri Nutt. ; T. & G. Fl. N. A. i: 178. 

 1838. 



Tufted from a deep woody root, 2 / -3 / high. 

 Leaves linear-subulate, rigid, very sharp- 

 pointed, densely imbricated, glabrous, 6"-i2" 

 long; flowering stems short, finely and densely 

 pubescent; bracts lanceolate-subulate, scarious- 

 margined, the margins ciliolate; cyme dense, 

 8"-i8" broad, its rays short and pubescent; 

 sepals lanceolate-subulate, pubescent, shorter 

 than the similar bracts and about one-half the 

 length of the petals; capsule not seen. 



In dry or rocky soil, Nebraska end Colorado to 

 Montana. June-Aug. 



4. Arenaria Fendleri A. Gray. Fendler's Sanchvort. (Fig. 1502.) 



Arenaria Fendleri A. Gray, Mem. Am. Acad. (II. )4: 

 13. 1849- 



Perennial by a woody root, pale green, glandu- 

 lar-pubescent above; stems tufted, erect, very 

 slender, usually several times forked, 4 / -i5 / tall, 

 the intcrnodes i '-2' long. Lower leaves subulate 

 or setaceous, glabrous or minutely ciliate, i'-4' 

 long, about X" wide, the|upper gradually smaller 

 and somewhat connate at the base; cyme loose, 

 its forks filiform, several-flowered; pedicels very 

 glandular, 3 // -i2 // long; flowers 4 // -6 // broad; 

 sepals linear-lanceolate, acuminate, scarious- 

 margincd, nearly as long as the obovate petals; 

 capsule narrowly oblong, rather shorter than the 

 sepals, 3-valved, the valves 2-toothed. 



In dry, usually rocky soil. Nebraska and Wyoming 

 to Utah, south to N\-\v Mexico and Arizona. Tune- 

 Aug. 



June- 



5. Arenaria bifldra (L.) S. Wats. Arctic Sanchvort. (Fig. 1503.) 



Ilaria bifiora L. Sp. PI. 422. 1753. 



Arenaria Sajancnsis Willd. ; Schlecht. Berl. Mag. Natf. 1816: 200. 

 1816. 



Aiinaria biflora S. Wats. Bibl. Index, i: 94. 1878. 



Perennial, stem woody below, tufted, glandular-pubescent, 

 i / -2 / high. Leaves linear or linear-lanceolate, sessile and 

 sheathing, densely imbricated, somewhat broadest at the 

 base, 3 "-4" long, semiterete, obtuse, glabrous, ciliate or 

 glandular-pubescent, generally falcate, strongly keeled by the 

 midvein; peduncles slender, terminal, i-2-flowered; flowers 

 5"-S" broad; sepals linear-oblong, 3-nerved, obtusish; petals 

 obovate, twice as long as the calyx; capsule slightly longer 

 than the sepals; seeds smooth. 



Greenland and Labrador to Quebec, west through Arctic Amer- 

 ica to Alaska, south in the Rocky Mountains to Arizona. Also in 

 Asia. Summer. 



