
Caryophyllaceae Loe 
: EE.  Inflorescence-bracts foliaceous. 
J. Leaves lanceolate. W.C. E. (A) borealis alpestris; A. brachypetala; 
A. simcoei; A. calycantha; A. uliginosa for our region. ) 
S. borealis Bigel. (Northern Chickweed) 
JJ. Leaves ovate. 
K. Sepals obtuse, hardly at all scarious- -margined petals none. W. E. 
S. obtusa Engelm. 
KK. Sepals acute, scarious-margined. 
L. Petals exceeding the calyx, always present. W. 
S. humifusa Rottb. 
LL. Petals exceeded by the calyx, sometimes none. 
M. Stem glabrous; sepals lanceolate; petals minute or none. W. C. 
S. crispa ©. & S. 
MM. Stem pubescent, sepals ovate; petals none, ) W.. ©; 
S. washingtoniana Rob. 
CERASTIUM MOUSE-EAR 
Annual or perennial, mostly pubescent or hirsute. Flowers white, in dichotomous 
terminal cymes. Sepals 5, rarely 4. Petals emarginate or bifid or rarely entire, rarely 
none. Stamens 10, rarely fewer. Styles as many as the sepals and opposite them, or 
fewer. Capsule cylindric, |-celled, often curved, opening by twice as many teeth as 
there are styles. Seeds many, rough, more or less flattened. (Gk. keras—a horn; re- 
ferring to the shape of the pod.) 
A. Petals not longer than the sepals, always present ; pod Ieee 4%, times as long as the 
calyx. 
B. Perennial, flowering in summer and fall; pedicels longer than the calyx. W. E. 
C. vulgatum L. (Common Mouse-ear) 
‘BB. Annual, flowering in spring; pedicels not longer than the calyx. W. C. E. 
(C. brachypodium.) C. viscosum . (Spring Mouse-ear) 
AA. Petals decidedly longer than the sepals, rarely none. 
C. Flowers 12—21 mm. wide; perennial. W.C. E. (C. arvense angustifolium; 
CC pilosum of How. FI.; C. elongatum.) 
C. arvense L. (Field Mouse-ear) 
CC. Flowers 4—6 mm. wide. 
D. Annual; leaves |2—-37 mm. long; calyx not scarious- “margined 1 nor hairy. E. 
CG. Ppapedunicalatim.) 
C. nutans Raf. (Powder-horn) 
DD. Perennial; leaves 8—10 mm. long; calyx scarious-margined, hairy. W. C. 
E. (C. alpinum for our region.) 
C. beeringianum ©. « S. 
SAGINA (Alsinella) PEARLWORT 
Annual or perennial, tufted or matted, low. Leaves subulate or reniform; stipules 
none. Flowers small, whitish, pedicelled, terminal. Sepals 4—-5. Petals sometimes 
none, entire or emarginate. Stamens as many as the sepals or fewer or twice as many. 
Ovary 1|-celled; styles as many as the sepals and alternate with them. Capsule 4——5- 
valved, opening at base; valves opposite the sepals, entire. Seeds many. (L. sagina—= 
fattening; and it was first the name of Spergula.) 
A. Herbage glabrous. 

