62 



UAUYoriJVJ.LACE.K. 



» » Stipules scaiious or setitbrm. 

 +- Petals conspicuous : styles distinct. 

 G. Spergula. Styles 5, alternate with tlie sepals and with the entire valves of the capsule. 



7. Lepigonum. Styles and valves ol' the cajjsule 3. 



-*- +■ I'etiils incoiispicuuiis or minute : styles united below. 



8. Polycarpon. Sepals and jietals entire. Leaves ovate or oblong : stipules scaiious. 



y. Loefliugia. Sepals rigid and with a setiforni tuoth on each side. Leaves subulate or seta- 

 ceous : the setiibrni rigid stipules aduate to each margin. 



Dkymaiua, Willd., is represented by one or two species in Lower California and by others in 

 Arizona. They have the aspect of Chickweeds {Slelliiria), small and scarious stipules, and 2-tJ- 

 cloft petals. 



1. SILENE, Linn. CATciiKhY. (."amimon. 

 Calyx tubular, c.ylindro-clavate to campanulate, 5-tootlied, 10-nerved. Petals 5, 

 with narrow claws; the blade mostly 2 - maiiy-clei't, and usually crowned with 2 

 scales at the base. Stamens 10, borne with the petals upon the stipe of the ovary. 

 Ovary 1-celled, mauy-ovuled : styles 3, Capsule dehiscent by 6, rarely 3, short 

 teeth. Seed opaque, tuberculate or echinate, attached marginally : embryo peri- 

 pherical. — Annual or mostly perennial herbs, of various habit. --Eohrbach, Monog. 

 Silene, and in Linmea, xxxvi. 170; Watson, I>ot. King Exp. 430, and Proc. Am. 

 Acad. X. 340. 



A genus of 300 or more species, most abundant in the northern temperate regions of the Old 

 World. Of the 25 American species, the larger number is confined to the Rocky Mountains and 

 the region westward. 



* Annuals : flowers small. 



Glabrous : flowers in an open naked dicliotomous panicle. 4. S. ANrmuniNA. 



Villous ; flowers racemose or sjucale : leaves spatulate. 8. S. GauI-ICA. 



♦ ♦ rerciinials : caly.\ canijianuliitc, inflated ; flowers few, 



Clandular-puberulcnt : flowers nodding : blade 4-parted ; claws and fila- 

 ments pulicscent. 1. S. campanulata. 



Mostly glabrous : flowers erect : blade bifid ; claws narrow, naked. 2. S. Lyau.ii. 



Puberulent : calyx somewhat inflated : flowers erect : blade bifid ; claws 



broader. 17. S. Douoi.Asn. 



» ♦ ♦ Perennials: caly.v oblong-cyliudric or davate. 



Usually low : inflorescence leafy. 



Flowers white, snndl : bladebitid, without crown. 5. S. Mkn/iksm. 



Flowers large, pale pink : blade 4-6-parU;d : tomenlo.se above. (5. S. lluoKKUl. 



Flowers large, deej) scarlet : blade 4-parled : glandular-pubescent or 



puberulent. 7. S. CAi.iFuii.MCA. 



Taller : floral Inacts .small and narrow. 

 Blade of the petals 4-jiarte<l or 4-cleft. 



Flowers large, briglit scarlet : blade deeply 4-cleft : leaves narrowly 



lanceolate or linear. 8. S. i,A( iniata. 



Slender, subglabrous : calyx short : blade Cijually 4-j)arted : capsule 



nearly sessile. i). S. Licmmoni. 



Stout and tall, glandular : calyx long : blade dee])ly 4-cleft ; claw 



Jiarrow, villous : stii)e lonj'. 10. S. occidentalis. 



Slender, puberulent : calyx long : blade 4-cleft ; claw naked ; auri- 

 cles and crown lacerate : stip<! long. 11. S. Montana. 

 Slender, puberulent : calyx and petals short : blade narrowly 4-parted ; 



narrow claw and filaments villous : stij)e short. 12. S. Pai.mkki. 



Blade of the petals bifid, mostly light rose-color ; lobes mostly oblong. 

 Stout, glandular : calyx-teeth long, lanceolate : petals purplish ; claw 



narrow, not auricled. 13. S. pectinata. 



Tall, lax : leaves broadly lanceolate : claw narrowly auricled : stipe 



short : seed not tubercled. 14. S. INCOMPTA. 



