xv i SYNOPTICAL KEY. 



-f H +- Capsule 1- celled, several-carpelled, the valves not separating from the placenta. Calyx 



persistent. 



H- Flowers irregular. 



9. Resedacese, p. 53. Sepals 4 : petals 2 or 4, cleft or entire : stamens few to many. Cap- 

 sule 3 - 6-beaked, many-seeded. Herbs ; leaves alternate, entire ; stipules glandular. 



11. Violaceae, p. 54. Sepals and petals 5 : anthers 5, coherent : style 1, clavate. Capsule 



3-valved, many-seeded. Low herbs, with alternate or radical stipulate leaves. 



++ -n- Flowers regular. Stipules jione. 



10. Cistaceee, p. 54. Sepals and petals 5, two of the sepals minute : stamens many : style 1. 

 Capsule 3-valved, few -many-seeded. Herbs or woody at base ; leaves entire, alternate. 



36. Droseraceae, p. 212. Flowers 5-merous, but -styles 3, 2-parted. Capsule 3-valved, many- 

 seeded. Low marsh herbs ; leaves radical, reddish, entire, beset with gland-tipped hairs. 



13. Frankeniaceee, p. 60. Stamens 4 to 7 : style 2 - 4-cleft. Capsule 2 - 4-valved, enclosed in 



the tubular fun-owed 4 - 5-lobed calyx. Low woody-based herbs, with opposite entire 

 leaves and small flowers. 



Flowers 5-merous : stamens indefinite : styles 3. Capsule 3-valved. Low herbs, with opposite 

 entire punctate leaves. HYPER ICUM in Hypericacece. 



Flowers 4-merous : petals united at base, bearing a broad gland. Capsule 2-valved, few -many- 

 seeded. Smooth biennials, with opposite or whorled leaves. FKASERA in Gentianacece. 



* * * Ovary compound (of 2 to several carpels), with central placentae. Stamens mostly strictly 



hypogynous. Sepals persistent. 



+- Flowers very irregular. 



12. Folygalaceae, p. 58. Capsule compressed, narrowly winged, 2-celled, 2-seeded. Stamens 



6 to 8, united ; anthers 1 -celled, opening at the top. Low woody-based perennials, with 

 alternate entire leaves, and no stipules. 



+- + Flowers regular. Capsule 1 -celled, with free central placenta. Leaves entire. 

 ++ Embryo curved around central albumen. 



14. Caryophyllacese, p. 61. Flowers mostly 5-merous : petals sometimes none : stamens 10 



or fewer : styles 3 to 5, the capsule opening by as many or twice as many valves. Seeds 

 numerous. Herbs, rarely woody at base, with opposite leaves, and mostly no stipules. 



15. Ulecebraceae, p. 71. Fruit a 1-seeded utricle included in the calyx. Petals none : sta- 



mens perigynous : style bifid. Low herbs, with opposite leaves, scarious stipules, and 

 sessile axillary flowers. 



16. Fortulacaceae, p. 73. Capsule 2 - 3-valved or circumscissile. Sepals 2 (4 to 8 in Lewisw) : 



petals 2 to 5 or more : stamens few or many : style 2 - 3-cleft. Seeds few or many. 

 Succulent herbs, with opposite or alternate or radical leaves, often stipulate. 



t+ ++ Embryo straight in albumen. Petals united at base : stamens opposite them. 



Utricle 1-seeded, enclosed in the scarious calyx. Flowers 5-merous. Perennial acaulescent mari- 

 time herbs. PLUMBAGINACE^;. 



Capsule 5-valved, few - many-seeded. Flowers mostly 5-merous : style 1. Herbs with mostly 

 opposite leaves, or acaulescent. Some PRIMULACE.E. 



*- +- +- Flowers regular. Ovary 2 - several-celled. 



n- Capsule not lobed nor winged, 

 (a.) Stamens distinct or nearly so, not fascicled. 



4. Sarraceniaceae, p. 17. Capsule 5-celled, 5-valved, many-seeded. Sepals and petals 5, 

 persistent : stamens many : style 5-lobed. Acaulescent marsh perennials, with pitcher- 

 shaped leaves and solitary flowers. 



18. Elatinaceae p. 79. Capsule 2 -5-celled, many-seeded. Flowers 2- or 5-merous: styles 

 distinct. Low annuals, with opposite leaves, membranous stipules, and axillary flowers. 



22. Linaceae, p. 88. Capsule 2 -5-valved, 4-10-celled and -seeded. Flowers 5-merous : styles 

 2 to 5. Low herbs, with entire opposite or alternate leaves, often with stipular glands, 

 and panicled flowers. 



Capsule 3-celled, several-seeded. Flowers 5-merous : petals none : styles 3. Prostrate annual, 

 with entire verticillate leaves and axillary flowers. MOLLUGO in FicoidecB. 



Capsule 5-celled, several seeded. Low herbs, with sour juice and alternate or radical 3-foliolate 

 leaves. OXALIS in Geraniacece. 



Capsule 5-10-celled, many-seeded. Stamens 10, rarely fewer ; anther-cells opening by a terminal 

 pore or chink. Scaly-bracted herbs without green foliage (or Ledum an evergreen shrub, 

 with alternate exstipulate leaves). Some ERICACEAE. 



