126 PROCEEDINGS OF THE AMERICAN ACADEMY 
+ + + + Styles 5, opposite the petals: calyx teeth conspicuously prolonged 
into foliaceous appendages. 
7 Agrostemma. Calyx ovoid, with 10 strong ribs; the elon- 
gated teeth in our introduced species an inch or more in length, 
exceeding the 5 large unappendaged petals. Stamens 10. Capsule 
1-celled. Leaves linear. 
Tripe I]. ALSINEZE. Sepals free or nearly so. Petals not 
distinctly unguiculate, never.appendaged. Styles 2-5, distinct to the 
basé. — Including genera 8-14; to be published at an early date. 
Trise III. POLYCARPEZ. Sepals free or somewhat united 
at the base. Petals commonly small, not distinctly unguiculate, borne 
together with the stamens upon an hypogynous or slightly perigynous 
disk. Style simple below, 3- or more rarely 2-branched above. 
stigmas rarely sessile on the ovary. 
* Petals 2-5-parted. 
15. Drymaria. Sepals 5, often scarious-margined. Petals 5. 
Stamens 3-5, slightly perigynous. Ovary 1-celled, several-many- 
ovuled. Capsule 3-valved. Flowers small, greenish white. Leaves 
flat, though often narrow, opposite or pseudoverticellate. Stipules 
small, free, scarious or bristle-formed, sometimes fugacious. 
* * Petals entire, denticulate, or none. 
+ Cauline leaves numerous, flat, not linear-setaceous. 
16. Polycarpon. Sepals 5, more or less carinate, entire, scari- 
ous-margined. Petals 5, small, shorter than the sepals, sometimes 
emarginate. Stamens 3-5. Ovary 1-celled. Capsule 3-valved, sev- 
eral-seeded. Seeds ovoid with the embryo but little curved. 
+ + Cauline leaves setaceous. 
17. Leeflingia. Sepals 5, carinate and produced to rather rigid 
setaceous tips; the three outer ones commonly bearing a setaceous 
tooth on each side. Petals 3-5, small or none. Stamens 3(-5 ?). 
Ovary 1-celled, several-seeded, triangular. Capsule 3-valved. Seeds 
oblong, attached laterally near the base. Embryo somewhat curved. 
Cotyledons accumbent. 
*“ + + Leaves forming a radical rosette; the cauline minute or obsolete: 
basal stipules lacerate. 
18. Stipulicida. Sepals 5, distinct, somewhat rigid, obtuse, 
emarginate, scarious-margined. Petals 5, entire, narrowly oblong, 
gradually contracted below, hypogynous. Stamens 5. Capsule ovate- 
globose, 3-valved, many-seeded. 
