CARi"OPHYLLACE.E. (PINK FAMILY.) 6i 



4. C ©blongfifdlillBlB, Torr. Stems ascending, Pilous (6' -12' high), 

 many-flowered ; leaves oblong-lanceolate and ovate ; peduncles clammy-hair}'; pet 

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

 New York and Pennsylvania to Illinois ; rare. May. — Stouter and larger 

 flowered than the following species. 



5. C. arve»SC, 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. M. — Dry or rocky places, Northeastern States, 

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



4 2. MCENCHIA, Ehrhart. — Petals entire or merely retuse: parts of the flowei 

 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. (J) (Sagina erecta, L. Mcenchia 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 weeds.) 



# Parts of the flower all in fours, or sometimes in fives. 



1. §. proen'afiiBtoeBis, 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. §. apetala, L. Annual, erect; leaves almost bristle-form; stamens 4; pet- 

 als obsolete or none. — Sandy fields, New York to 111.; rare. (Adv. from Eu.) 



* * Sepals, petals, styles, and valves 5 or 4 stamens 10. 



3. S. BBOddsa, 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; 

 coast of Maine near Portland ; shore of Lake Superior, and northward. 

 July. (Eu.) 



S. Elliottii, Fenzl (Spergula decumbens, Ell.) may occur in S. Virginia. 



Suborder ILL ILLECEBREJS. The Knotwort Family. 



14. SPERGVLARIA, Pers. Spurrey-Sandwort. 



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

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



6 



