26 ANALYTICAL KEY. 



Leaves not pellucid-dotted. Page 



Stipulate; trees, fruit a pome PoMEJi,301 



Exstipulate ; prostrate herbs with fleshy leaves. . . Mesembryanthemum, 326 



Ovary 1-celIed, half free ; calyx-lobes 2. Portulaca, 165 



Ovary 1-celled, inferior, leafles, thorny, succulent plants. , . . Cactace^, 325 



B, Stamens as viany as petals arid opposite them. 

 Ovary 1-celled. 



Anthers opening elastically by valves Berberidace^, 47 



Anthers not opening elastically. 



Climbing shrubs; flowers minute, in axillary cymes . . . Menispermace.e, 2 



Herbs ; flowers solitary, pedicelled. Primulace^e, .515 



Herbs or shrubs; flowers sessile in spikes or heads. . . . PLUMBACiNEaj, 510 

 Ovary 2-4-celled. 

 Calyx teeth obsolete or small; corolla hood-like, united at tip. . . Ampelide^, 202 



Calyx 4-5-fid ; petals not united at tip Ehamne^, 200 



C. Stamens not more than 10, or not more than twice as many as petals ^ or, if as many, alternate 



with them. 



1 , Cahjz free from ovory . 



* Ovaries 2 or more, separate. 



fctamens united by filaments, anthers anherent to stigma. . . Asclepiadeje , 523 



Stamens separate, Crassulace^, 313 



* * Ovaries 2-5, more or less united below, separate above. 



Stjie 1 ; leaves pellucid-dotted ; plants with heavy odor Rutace.e, 196 



* * * Ovaries or lobes of compound ovary 5, connected by styles. 



Stamens united in a ring at base Geraniace^, 189 



* * * * Ovary single. 

 Ovary of 1 carpel ; placenta parietal ; style or stigma 1 ; fruit a pod. . Leguminos.^:, 208 

 Ovary compound with more than 1 cell, placenta, style or stigma 

 1-celled, with several stigmas or styles, or placentae or a loment. 

 Corolla irregular. 



Of 2 petals; sepals 2-5 ; stamens 3. Oligomeris, 113 



Of 4 petals in pairs. 

 Not bilabiate ; stamens 4, separate; stigmas 2 .... Hypecoum, 53 



Bilabiate; stamens 6, 2-adelphous ; stigma 2-lobed. . . . FuMARiACE.aE, 54 

 Of 5 petals. • 



Stamens 5; stigmas united Yiolarie.'»;, 118 



Stamens 10, 5 with anthers, 5 without. Moringe^, 207 



Corolla regular or nearly so. 

 Seeds 1-2 at base of cell or pendulous. 

 Trees with or without Turpentine odor ; stigmas 3. . . Anacardiace.v., 205 



Herbs or shrubs ; styles 2-3 Paronychie.s:, 158 



Seeds more than 1, in axis or at base ; herbs. 

 Calyx gamosepalous. 



Exstipulate Silene.s:, 12] 



Stipulate Polycarpeje, 158 



Calyx polysepalous. 



Herbs Alsine^:, 147 



Shrubs or trees Tamarix, 166 



Seeds numerous, on 2 or more parietal placentae. 



Erect herbs or shrubs ; placentas 2 Cleome, 107 



Prostrate herbs or small shrubs. ...... Frankeniace^, 121 



Bog-herbs ; glandular-hairy; placental 3-5 Droserace.e, 317 



2-00 -celled. 

 Flowers irregular. 

 Stamens 1-2-adelphous. 

 8, adherent to corolla ; anthers ]-celled, opening at tip. . . Polygalace.b, 120 

 10, free ; pod more or less divided by approach of sutures . . Astragalus, 253 

 Flowers regular or nearly so. 



Stamens 2-3; petals 4 ; shrubs or trees Oleace.^,519 



Stamens C, tetradynamous Cruciferje, 67 



