52 CARY0PHYLLACE2E. 



ginate. Stamens 10, sometimes 4 or 6, the alternate ones 

 short. Styles 5. Capsule superior, cylindrical or oblong, 

 opening at the apex by 10 teeth, many-seeded. — Flowert 

 white in terminal cymes. 



* Petals about as long as (fie calyx ; pods long and curved, 



1. C. VULGATUM, L. Mouse-ear Chickweed. 



Hairy, pale green, seldom clammy, in tufts ; leaves ovate or obovate, obtuse ; 

 flowers in sub-capitate clusters ; sepals lanceolate, acute, in fruit as long as the 

 peduncles ; petals oblong, emarginate, scarcely longer than the calyx. Annual. 



Waste places, fields and hills. May— Aug. Stem 6 to 10 inches high, sub-erect. 

 Flowers white, the petals appearing in 10 segments. Capsule oblong, tapering, 

 twice as long as the calyx. Introduced from Europe. 



2. C. viscosum, L. Clammy Mouse-ear Chickweed. 



Hairy viscid, spreading, deep green; stems numerous, erect; leaves lanceolate- 

 oblong, rather acute ; flowers in loose cymes ; sepals oblong-ovate, obtuse, in point 

 shorter than the peduncles; petals oblong, emarginate, scarcely larger than the 

 calyx. Biennial. 



Fields and waste grounds. May — Aug. Stem 6 to 12 inches high. Leaves % to 

 % inches long, y z as broad; root leaves somewhat spatulate. Flowers white. 

 Probably introduced. 



* * retals much longer than the calyx. 



3. C. nutans, Raf. Nodding Chickweed. 



Viscid and pubescent; stem erect, slender grooved, diffusely branched; leaves 

 lance-linear, elongated, distant ; panicle much elongated, divaricate, many-flowered, 

 with long filiform pedicels; petals oblong, bifid, at the tip, twice as long as the 

 calyx ; capsule nodding on the stalks, curved upwards, 3 times as long as the ealyx. 



Moist places. June. Annual. Stem 8 to 20 inches high, branched from the 

 base. Leaves 1 to 2 inches long % as wide. Flowers white, terminal, in a loose 

 dichotomous panicle. Whole plant pale-green. 



4. C. oblongifolium, Tourn. Oolong-leaved Chickweed. 



Stem ascending, villous, many-flowered ; leaves oblong-lanceolate and ovate, mostly 

 obtuse ; peduncles clammy-hairy ; petals obovate, 2-cleft, twice as long as the oblong 

 obtuse sepals; capsidc twice as long as the calyx. 



Rocky places. May, June. Per. Stem 6 to 10 inches high, stout. Leaves % to 

 1 inch long, % as wide, tapering from base to an acute or obtuse apex. Flowert 

 larger than either of the foregoing, white, 7 to 15 in a 2 or 3-forked cyme. 



5. C. arvense, L. Field Chickweed. 



Stem ascending or erect, tufted," downy, slender, naked and few-flowered; leavtt 

 linear-lanceolate, obtuse, the lowest spatulate, more or less hairy ; peduncles elon- 

 gated; petals more than twice the length of the calyx; capsule oblong, scarcely 

 longer than the calyx. 



Dry or rocky places. May, June. Perennial. Stem 4 to 8 inches high. Leaves 

 % to V/i inches long, very narrow. Flowers white, rather large, 2 to 3 on termi- 

 nal pedicels. Petals deeply cleft. 



7. ARENARIA. Linn. Sand Wort. 



Lat. arena, sand ; in which the species mostly grow. 



Sepals 5 ; rarely 4. Petals 5, entire. Stamens 10, 



