496 ALSINACEAE 
and whitish or pre hairs: sepals suborbieular to Maid -orbieular, 3-4 mm. 
long: petals yellow: se: 12-16: capsule subglobose, 3-3.5 mm. broad. 
[P. halimoides ~ Gray, not L.]—Sand- bue p and p mens S pen. 
Fla. and the Keys (WW. T. Mez., S. A.) —A1l yea 
5. P. coronata Small. Plant nearly po and erect or diffusely be s 
branches usually deep-pink or magenta: leaf-blades mostly 1—1.5 e 
lo es oblanceolate, the upper ‘iliptie or C anne Eoo or 
acutish: sepals triangular, about 2 mm. long: corolla about 5 mm. wide; petals 
yellow, ovate to T ovate, acut apsule hemispheric to turbinate-hemi- 
spheric, about 5 mm. high.—Granite Pn Little Stone Mt. in the Piedmont 
of Ga.—Fall. 
6. P. oleracea L. Plant prostrate, more or less radially branched, the branches 
green or dark-spotted: leaf-blades cuneate to obovate, 1-3 cm. long, rounded 
the apex: sepals 2.8-4.5 mm. long: corolla mostly mm. wide; petals 
yellow or orange, 3-8 mm. long, notched: capsule circumscissile about the 
middle, 5-9 mm. high.—(PunzSLANE.  PuSsLEY. DUCKWEED.)— ammocks, 
pinelands, cult. Po and waste-places, U. S. and S Can.—(W. I., Mex., 
C. A., S. A., O. W.)—Spr.-fall or all year S. 
Faminty 13. ALSINACEAE — CHICKWEED FAMILY 
Herbs, sometimes woody at the base. Leaves opposite: blades entire. 
lowers mostly perfect. Calyx of 4 or 5 persisten d m et vee 
F 
Corolla of 4 or 5 clawless oed or wanting. fes m of tw 
many stamens as sepals, or few Gynoecium of 2-5 porn ae cls. 
Ovary superior. Fruit a cp ale subtended by the calyx .—Thirty-two 
genera and 500 species, most abundant in temperate regions. 
Styles distinct. 
Stipules wanting. Tribe I. Sete 
Stipules present. Tribe II. Tis 
Styles partly united. Tribe III. pee. 
I. SAGINEAE 
Styles alternate with the sepals. 1. SAGINA. 
Styles opposite the sepals or alternate in Alsine aquatica. 
C e short, ovoid or ellipsoid, the valves as many as the 
es. 
Petals 2-lobed or wanting 2. ALSINE. 
Petals e) or slightly ‘notched. 
Valve the capsule entire. 3. SABULINA. 
Valve 5 of the capsule 2-lobed. 4. ARENARIA. 
Capsule long, cylindric, open ing by twice as many tooth-like 
valves as there 
Petals toothed. 5. HOLOSTEUM. 
Petals deeply lobed. 6. CERASTIUM. 
II. TISSEAE 
Leaves opposite: styles 3: capsule 3-valved. 1. TISSA. 
Leaves whorled: styles 5: capsule 5-valved. 8. SPERGULA. 
III. DRYMERIEAE 
Petals deeply 2-lobed. 9. DRYMERIA. 
Petals entire or merely toothed. 
Sepals keeled. 10. POLYCARPON. 
Sepals not keeled. 11. STIPULICIDA. 
1. SAGINA L. Annual or perennial diminutive herbs. Leaf-blades subu- 
late to filiform. Flowers axillary. Sepals 4 or 5, persistent. Petals white, 
4 or 5, about as long as the sepals, or wanting. Stamens 5, or sometimes 3-10. 
