ANALYTICAL KEY. 14c 



Leaves alternate; twining vines; flowers funnelform, axillary Convolvulaceae, 86 



Leaves alternate; flowers not axillary Hydrophyllaceae, 80 



Leaves alternate; flowers in a head, with acerose bracts Gilia, § 5, 78 



Style 2-cleft Hydrophyllaceee, 80 



Style 3-cleft, or stigmas 3 Polemoniaceae, 75 



Style 2; leaves simple or none. 



Flowers solitary in the axils of small leaves ) „ 



■en 1 ^ J ^i-r x- X } Convolvulaceae, 86 



Flowers clustered on liuform parasitic stems ) ' 



Flowers in naked cymose clusters; shrubs Hydrophyllaceee, 80 



* * * * Stamens/ewer than the lobes of the slightly irregular corolla. 



Limosella or Veronica in Scrophulariaceae, &3 



2. FLOWERS IRREGULAR. Stamens with anthers 4 in pairs or 2; style 1; 

 leaves opposite or none, except in some of the Scrophulariaceae. 



Ovary 1 -celled; corolla curved; leafless root parasites Orobanchaceae, 96 



Ovary 2-celled Scrophulariaceae, 89 



Ovary 4 parted, forming in fruit 4 seedlike nutlets Labiatae, 97 



Ovary 4-lobed; fruit splitting into 4 nutlets Verbenaceae, 102 



DIVISION 3. APETALiE. 



A. Ovary inferior (calyx adherent) or apparently so. 



Leuves cordate; calyx 3-lobed; capsule 6-celled Aristolochiaceae, 104 



Leaves opposite; calyx salver- form; ovary 1-seeded Nyctaginaceae, 104 



Leaves opposite; calyx inconspicuous; corolla tubular Capriloliaceae, 64 



B, Ovary superior (free from the calyx). "^ 



* Herbs; leaves alternate. "^ 



Petaloid calyx withering-persistent; akene 3-comered or flat Polygonaceae, 105 



Petaloid sepals deciduous; carpels several Ranunculaceae, 16 



Sepals 4, green, deciduous; small pods 2-celled Cruciferae, 22 



Flowers asepalous in a spike, with a petaloid involucre Anemopsis, 106 



* • Herbs; leaves opposite, entire. 

 Capsule 1 -celled; style spd stigma 1; leaves fleshy. 



Stems prostrate; flowers in involucrate heads Nyctaginaceae, 104 



Stems erect; flowers axillary . ; Olaux in Primulaceae, 73 



Capsule 1 -celled ; sty le or stigmas, 3 or more Gary ophy llaceae, 27 



Capsule 3-5-celled; flowers axillary Mollugo in Ficoideae, 63 



