DICOTYLEDONOUS PLANTS 173 



1. T. americana, Pursh. Star-flower, Chickweed Winter- 

 GREEx. Spreading by long and slender rootstocks, branches erect, 

 stem-like, 3-9 in. high. Leaves very thin, pale green, pointed at both 

 ends. Flowers white. Capsules white, marked off into polygonal 

 sections, each corresponding to 1 seed. Cold woods, common N. 



IV. STEIRONEMA, Raf. 



Perennial herbs. Leaves opposite or whorled, simple, 

 entire. Flowers yellow, axillary or racemose, on slender 

 peduncles. Calyx-tube 5-parted, persistent. Corolla 5-parted, 

 wheel-shaped, tube very short or none, the lobes denticulate 

 at the apex, and in the bud each one enclosing a stamen. 

 Stamens o, distinct or slightly united at the base, sterile rudi- 

 ments often alternating with them. Ovary globose ; style 

 slender. Fruit a globose, 5-valved, few or many-seeded 

 capsule.* 



1. S. ciliatum, Raf. Frixged Loosestrife. Stems erect, slen- 

 der, simple, or branched, 1-3 ft. high. Leaves opposite, ovate to 

 ovate-lanceolate, acute at the apex, rounded at the base, margins and 

 petioles hairy-fringed; flowers solitary on axillary peduncles, |-1 in. 

 broad ; petals broadly ovate or roundish, denticulate ; calyx shorter 

 than the capsule. Woods and thickets.* 



V. LYSIMACHIA, Toum. 



Perennials, with opposite or whorled entire leaves, which 

 are often dotted. Calyx 5-6-parted. Corolla wheel-shaped, 

 with its divisions commonly nearly separate. Stamens gen- 

 erally somewhat monadelphous at the base. 



1. L. quadrifolia, L. Four-leaved Loosestrife. Stem erect and 

 simple, 1-2 ft. high, hairy. Leaves whorled, most frequently in 

 fours, broadly lanceolate. Flowers small, axillary, and solitary, on 

 long and slender peduncles. Damp or sandy soil. 



2. L. striata, L. Bulb-bearixg Loosestrife. Stems 1-2 ft. 

 high, finally branching, frequently producing bulblets in the leaf- 

 axils after flowering. Leaves abundant, generally opposite, narrowly 

 lanceolate. Flowers small, pediceled, in a long, terminal raceme. 

 Low or swampy ground. 



