CARYOPHYLLACE^E. (PINK FAMILY.) 87 



1. S. pubera, Michx. (GREAT CHICKWEED.) Root perennial; leaves 

 all sessile ; petals longer than the calyx, deeply 2-cleft; stamens 10. Shaded 

 rocks, Penn. to Ind., and southward. May. 



* * Stems erect or spreading ; wholly glabrous perennials, with sessile and nar- 

 row or small leaves; stamens usually 10, perigynous. 

 *- Scaly-bracted ; petals 2-parted, equalling or surpassing the calyx. 



2. S. longifblia, Muhl. (LONG-LEAVED STITCHWORT.) Stem erect, 

 weak, often with rough angles (8- 18' high) ; leaves linear, acutish at both ends, 

 spreading ; cymes naked and at length lateral, peduncled, many-flowered, the 

 slender pedicels spreading; petals 2-parted, longer than the calyx; seeds 

 smooth. Grassy places ; common, especially northward. June, July. (Eu.) 



3. S. longipes, Goldie. (LONG-STALKED S.) Shining or somewhat 

 glaucous, very smooth ; leaves ascending, lanceolate or linear-lanceolate, acute, 

 broadest at the base, rather rigid ; cyme terminal, few-flowered, the long pedi- 

 cels strictly erect; petals longer than the calyx; seeds smooth. Maine to 

 Minn., rare ; common farther north. (Eu.) 



S. GRAMLNEA, L. Resembling the last ; leaves linear-lanceolate, broadest 

 above the base ; pedicels widely spreading ; seeds strongly but minutely rugose. 

 Becoming rather frequent. (Int. from Eu.) 



4. S. uliginbsa, Murr. (SWAMP S.) Stems weak, decumbent or dif- 

 fuse, at length prolonged, leaving the naked and usually sessile cymes lateral ; 

 leaves lanceolate or oblong, veiny; petals and ripe pods as long as the calyx; 

 seeds roughened. Swamps and rills, Md. to N. Eng., and northward ; rare. 

 (Eu.) 



- <- Flowers terminal or in the forks of the stem or of leafy branches; bracts 

 foliaceous ; petals 2-parted, small or often none; styles 3-4; pod longer 

 than the calyx. 



5. S. crassifblia, Ehrh. Stems diffuse or erect, flaccid; leaves rather 

 fleshy, varying from linear-lanceolate to oblong ; petals longer than the calyx t 

 or wanting; seeds rugose-roughened. Springy places, eastern Ky. (Short), 

 Ringwood, 111. ( Vasey), and northward. April - June. (Eu.) 



6. S. borealis, Bigel. (NORTHERN S.) Stems erect or spreading, flaccid, 

 many times forked, at length resolved into a leafy cyme ; leaves varying from 

 broadly lanceolate to ovate-oblong petals 2-5, shorter than the calyx, or oftener 

 none; sepals acute; styles usually 4; seeds smooth. Shaded or wet places, 

 R. I. to Minn., and northward. June -Aug. Var. ALPESTRIS has the later 

 flowers more cymose, and their bracts small and partly scarious, also the seeds 

 obscurely reticulated or roughish. Lake Superior, Dr. Bobbins. (Eu.) 



7. S. humifusa, Rottb. Spreading or creeping; stems or branches 

 (2' high) 1-3-flowered; leaves Jleshy, ovate or oblong (2 -3" long); petals a 

 little longer than the calyx : seeds smooth. Northern border of Maine on the 

 St. John's (G. L. Goodale), and high northward. June. (Eu.) 



8. HOLOSTEUM, L. JAGGED CHICKWEED. 



Sepals 5. Petals 5, usually jagged or denticulate at the point. Stamens 

 3-5, rarely 10. Styles mostly 3. Pod ovoid, 1 -celled, many-seeded, opening 

 at the top by 6 teeth. Seeds rough, flattened on the back, attached by the 

 inner face. Annuals or biennials, with several (white) flowers in an umbeL 



