ai.kink. CARYGPHYLLAOEJC. 83 



A REN A EI A. 



A. bore&lis Eiittcn Mem. Torr. Clubv, 141). Stellaria boreaiis Higel- 

 Glabrous: stems usually weak, erect or spreading, branching %-2 fee* 

 high : leaves linear-lanceolate to ovate-oblong, %-2 inches long, 1-5 lines 

 wide, acute, flowers in dichotomous cymes : sepals ovate to lanceolate, a 

 line long or more : petals 2-parted, shorter than the calyx, 2-5 or wanting : 

 capsule ovate l%-2 lines long, on spreading or deflexed peduncles: seeds 

 smooth. Along streams, Oregon, etc., to the Atlantic. 



A. hnmifnsa. Stellaria humifusa Rottb. Low, densely matted, smooth : 

 stems prostrate or ascending, angulate, shining: leaves elliptic-ovate or ob- 

 long, acutish, 2-5 lines long, marcescent: bracts foliaceous : peduncles axil- 

 lary, 4-7 lines long: sepals ovate-oblong acute, narrowly margined, 

 petals somewhat exceeding the calyx: seeds smooth. 



A. crispa Holzinger Contr. Nat. Herb, iii, 116. Stellaria crispa Cham. 

 cfc Schlecht. Glabrous: stems very slender, weak and decumbent, 6-12 

 inches long, simple or sparingly branched: leaves thin, ovate to oblong- 

 ovate, acuminate, commonly crisp on the edges, 4-6 lines long: pedicels 

 solitary, 3-10 lines long: sepals scarious-margined, lanceolate, acute, 1)^-2 

 lines long,.3-nerved : petals when present, deeply cleft, with linear acute 

 lobes : capsule acute, longer than the calyx. 



A. obtnsa. Stellaria obtusa Engelm. Bot. Gaz. vii, 5. Smooth: stems 

 weak, nearly simple, 2-6 inches long: leaves thin, ovate to broadly lan- 

 ceolate, acute, 3-10 lines long: flowers solitary, appearing axillary: sepals 

 ovate obtuse, hardly at all scarious on the margins: petals none: 

 capsule 1^-1 )^ times as long as the calyx, obtuse: seed brown, covered 

 with minute lighter colored oblong tubercles with fringed edges. In wet 

 places on mountains, Blue Mountains, Oregon to British Columbia and 

 Colorado. 



A. Simcoei. Pubescent throughout with spreading hairs : densely ces- 

 pitose: stems filiform erect, simple or sparingly branched, 4-8 inches 

 high : leaves oblong to elliptical, acute, 4-6 lines long, 1-nerved : pedicels 

 solitary, filiform, 10-12 lines long: sepals oblong, acutish, broadly mar- 

 gined, less than a line long: petals 2-parted; segments oblong, about half 

 as long as the calyx ; capsule and seeds not seen. In springs on top of the 

 Simcoe Mountains, Washington. 



* * Petals ret use or shortly bifid, divided but %-% the way to the 

 base, commonly considerably exceeding the calyx. 



A. Jamesii Holzinger 1. c. Stellaria Jamesii Torr. Viscid above: 

 stems strongly angled, rather stout and ascending, branched, 1-2 feet 

 high : leaves linear to ovate-lanceolate, attenuate, 1-3 inches long, 2-9 

 lines wide, acuminate, dark green: pedicels spreading, rather short, at 

 length deflexed : sepals oblong, acute, 2-3 lines long, the bifid petals 

 mostly twice longer: capsule ovate shorter than the calyx: seeds smooth. 

 Woodlands and creek bottoms, northern Califoiaia to Washington, Colo- 

 rado, New Mexico and Arizona. 



7 ARENARIA L. Gen. n. 569. 



Mostly low, often tufted annual or perennial herbs with ses- 

 sile subulate aud more or less rigid leaves without stipules and 

 small white flowers in paniculate or capitate cymes in spring and 

 summer. Sepals 5, rarely 4. Petals as many as sepals, rarely 

 wanting, entire or emarginate. Stamens twice as many as pet- 

 als. Styles 3, rarely 2, 4 or 5, opposite as many sepals. Cap- 

 sule glohose or short-oblong, dehiscent into as many 2-cleft 

 valves as styles, few to many-seeded. Seeds laterally compressed 

 or reniform-globose. 



