CAKYOPHTLLACE^E. (PINK FAMILY.) 61 



4. C. Oblongrifolillin, Torr. Stems ascending, villous (6 -12' high), 

 maiy-flowered ; leaves oblong-lanceolate and ovate ; peduncles clammj -hairy ; pet- 

 als (2-lobed) and ripe pods about twice the length of the calyx. U~ Rocky places, 

 New York and Pennsylvania ; rare. May. Stouter and larger-flowered than 

 die following species. 



5. C. arvense, L. (FIELD CHICKWEED.) Stems ascending or erect ; 

 tufted, downy, slender (4' -8'- high), naked and few-flowered at the summit; 

 leaves linear ; petals obcordate, more than twice the length of the calyx ; pods 

 scarcely longer than the calyx. Ij. Dry or rocky places, Northeastern States, 

 and northward, where it is indigenous. May, June. (Eu.) 



2. MCENCHTA, Ehrhart. Petals entire or merely retuse: parts of the flower 

 commonly in fours : pod ovate, not longer than the calyx. 



6. C. QUATERNELLUM, Fenzl. Smooth and glaucous ; stem simple, erect 

 (2' -4' high), 1 -2-flowered; leaves lanceolate, acute ; petals not exceeding the 

 calyx; stamens 4. () (Sagina erecta, L. Mrenchia quaternella, Ehrhart 

 M. erecta, Smith.) Near Baltimore, in dry ground. (Adv. from Eu.) 



13. SAGINA, L. PEARLWORT. 



Sepals 4 or 5. Petals 4 or 5, undivided, often obsolete or none. Stamens as 

 many as the sepals, rarely twice their number. Styles as many as the sepals 

 and alternate with them. Pod many-seeded, 4 - 5-valved ; the valves opposite 

 the sepals. Seeds smooth. Little, matted herbs, with thread-like or awl-shaped 

 leaves, and small flowers. (Name from sagina, fattening ; of no obvious appli- 

 cation to these minute Aveeds.) 



# Parts of the Jlower all in fours, or sometimes in Jives. 



1. S. procuBllbens, L. Perennial, depressed ; leaves thread-form or nar- 

 rowly linear; peduncles ascending in fruit; stamens 4-5 ; petals shorter than the 

 broadly ovate sepals, sometimes none. Springy places, Maine to Pennsylvania. 

 May -Aug. (Eu.) 



2. S. APETALA, L. Annual, erect ; leaves almost bristle-form ; stamens 4 ; pet- 

 als obsolete or none. Sandy fields, New York to Penn. ; rare. (Adv. from Eu.) 



* * Sepals, pet,als, styles, and valves 5 : stamens 10. 



3. S. nodosa, Fenzl. Perennial, tufted; stems ascending (3' -5' high), 

 branching; leaves thread-form, the upper short and awl-shaped, with minute 

 ones fascicled in their axils so that the branchlets appear knotty ; petals much 

 longer than the calyx. (Spergula nodosa, L.} Wet sandy soil, Isle of Shoals, 

 N. Hampshire (Oakes Sf Robbins), shore of Lake Superior, and northward. 

 July. (Eu.) 



S. ELLIOTTII, Fenzl (Spergula ddfcumbens, Ell.} may occur in S. Virginia. 



SUBORDER III. ILLECEBRH^E. THE KNOTWORT FAMILY. 



14. SPEKGUL.ARIA, Pers. SPURREY-SANDWORT. 

 Sepals 5. Petals 5, entire. Stamens 2-10. Stvlcs and valves of the many- 

 seeded pod 3-5, when 5 the valves alternate with the sepals ! Embryo not 



