Iviii 
INTRODUCTION. 
Droskra. Styles 3 or 5, 2-parted and so apparently 6 or 10. 49 
-•--♦-Pod 1 celled, several-seeded : placenta? central at the base. 
Alsine®. Leaves opposite, entire. Styles 3-5. 60 
-♦--•—♦-Pod 1 celled, 1-seeded, indehiscent. 
Statice. Calyx funnel-form, scarious. Petals long-clawed. 279 
-♦—•—•—>-Pod more or less 10-celled, 10-seeded. 
Linum. Sepals, petals, stamens, and styles 5. 72 
* * Pistils 5 or more, entirely separate. 
Zanthorhiza. Sepals and petals hypogynous, distinct. 14 
Sibbaldia. Petals and stamens on the 5 - 10 cleft calyx. 119 
CLASS VI. HEXANDRIA. 
Order Monogynia. Style or sessile stigma 1. 
* Calyx or perianth free from the ovary (inferior). 
-•-Ovary 1-celled, 1 -few-ovuled from the base. 
Berberidace®. Anthers opening by uplifted valves. 20 
Nacmburgia. Anthers opening lengthwise. Sepals and petals 6. 283 
Orontium. Anthers opening lengthwise. Sepals 6: petals none. 448 
-•--♦-Ovary 4-6-celled, a 4-6 seeded drupe in fruit. 
Prinos. Calyx (minute) and corolla each mostly 6-parted. 276 
-—•--•-Ovary 2-3-celled. 
—■ Calyx and corolla different in color and texture. 
Lythrum. Petals and stamens on the throat of the cylindrical calyx. 132 
Fl(ERKF.a. Petals and stamens nearly hypogynous. Fruit 3 achenia. 77 
Tradescantia. Petals and stamens regular, hypogynous. Pod 
2 -3celled. 8 5 ™ 87 512 
Commelyna. Petals and stamens irregular, hypogynous. Pod 2-3* 
celled. 511 
—* *•*■•■ Calyx and corolla forming a colored petal-like 6-merous perianth. 
— Perianth irregular, funnel-form. 
Pontederia. Fleshy persistent base of the perianth inclosing the 1- 
seeded fruit. 509 
= = Perianth regular. Flowers on a lateral spadix. 
Acorus. Sepals distinct, concave. Utricle 1-few seeded. 
= ==== Perianth regular. Flowers not on a spadix. 
Liliace®. Anthers introrse. Style single, not splitting into 3. ^ 
H®modorace®. Anthers introrse. Style splitting into 3 on the pod. 4w 
Uvula rie®. Anthers extrorse. € 490 
++++++ Calyx and corolla forming a glumaceous 6-merous perianth. 
Juncace®. Anthers introrse. Pod 3-valved, 3 -many-seeded. 
* * Perianth adherent to the ovary (superior). 
Amaryllidace®. Perianth 6-parted, petal-like. Pod 3-celled. 
44S 
479 
Order Di^ynia. Styles or sessile stigmas 2. 
Oxyria. Sepals 4. Fruit flat, 2-winged. 
Polygonum. Sepals 5. Fruit lenticular. 
Order Trigynia. Styles or sessile stigmas 3. 
* Calyx 5-parted, petal-like. 
Polygonum. Achenium triangular: sepals all alike. 
391 
386 
386 
