COHORTS AND ORDERS. (BY THE EDITOR.] 



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PAGE I 



1, often dilated below the usually 2-fid 

 stigma; ovules many. Fruit and seeds 

 various. Trees or shrubs, rarely herbs, often 

 climbing ; juice milky ; leaves opposite or 

 whorled (rarely alternate) ; stipules or of 



cilia 548 



145. ASCLEPIADEJE. Corolla-lobes 5, 

 usually contorted. Stamens usually cohering 

 in a crown, and clasping the top of the short 

 style ; anther-cells 2-4 ; pollen agglutinated 

 in waxy masses, those of the adjacent anthers 

 often united in pairs. Ovary of 2 free 

 carpels ; stigmas 2, connate ; ovules many. 

 Fruit of 1 or 2 follicles. Seeds often comose. 

 Trees or shrubs, often climbing ; leaves 

 opposite, rarely whorled alternate or obsolete, 

 exstipulate 551 



146. LOGANIACE.E. Corolla-lobes 5-10, 

 valvate imbricate or contorted. Stamens as 

 many as the corolla-lobes, and opposite them 

 when 10, alternate when 5. Ovary 2-4- 

 celled; cells l-oo -ovuled. Fruit various. 

 Seed albuminous. Trees or shrubs ; leaves 

 opposite, stipulate or with dilated petioles . 555 



147. GKNTIAWBA Corolla - lobes con- 

 torted valvate or induplicate. Stamens as 

 many as the corolla-lobes, alternate with 

 them. Ovary 1- rarely sub-2-celled ; pla- 

 centas parietal; ovules many, horizontal. 

 Capsule septicidal. Seeds small, albuminous. 

 Glabrous herbs, rarely shrubby below; 

 leaves opposite or whorled, quite entire, 

 exstipulate (alternate and 3-foliolate in 

 Menyanthea) 553 



Cohort XXIII. Polemoniales. Corolla hypogynous, monopetalous, regular. Stamens 

 as many as the corolla-lobes, and inserted on the tube ; filaments usually exserted. Ovary 

 1-5-celled, syncarpous (except Dichondrece and Nolanece) ; cells 1-2- very rarely oo -ovuled. 

 Embryo albuminous. Herbs, rarely shrubby below.; leaves alternate or 0, exstipulate. 



- 148. HYDROPHYLLEJE. Corolla on a 

 hypogynous disk ; lobes 5, imbricate. Sta- 

 mens 5, inserted at the base of the corolla- 

 tube ; filaments slender, exserted, often 

 appendaged at the base. Ovary 1-2-celled ; 

 style slender, 2-fid; ovules 2 or more on 

 each of 2 placentas. Capsule 2-valved; 

 embryo straight, in cartilaginous albumen. 

 Herbs; juice watery ..... 560 



149. HYDROLEACEJS. Corolla hypogynous; 

 lobes 5, imbricate. Stamens inserted on the 

 corolla-tube ; filaments slender, exserted. 

 Disk 0. Ovary 1-2-celled; styles 2, distinct; 

 ovules many. Capsule 2-valved. Seeds 

 minute ; embryo straight in scanty albumen. 

 Herbs ....... 561 



150. POLEMONIACE^;. Corolla hypogy^ 

 nous ; lobes 5, contorted. Stamens inserted 

 on the middle or top of the corolla-tube ; 

 filaments exserted, sometimes unequal. Disk 

 glandular. Ovary 3-5-celled ; style 3-5"fid ; 

 ovules solitary and .erect, or many 2-seriate 

 and ascending. Capsule 3-5-valved. Embryo 

 straight, in fleshy albumen. Herbs, rarely 

 undershrubs ; leaves alternate, or the lower 

 opposite .... 663 



151. CONVOLVULACE^. Corolla-lobes 5, 

 contorted. Stamens inserted'at the base of 



the corolla-^tu'be ; filaments included or ex- 

 serted, equal or unequal. Disk usually 

 annular. Ovary 1-4-celled, synearpous ; 

 style usually slender; ovules 1-2 in each 

 cell, basal, erect. Capsule (rarely a berry) 

 1-4-celled. Embryo curved, with crumpled 

 cotyledons and scanty mucilaginous albumen. 

 Herbs, usually twining, rarely shrubs; 

 juice often milky , 565 



152. Dic^ONPREvE. Corolla-lobes 5, val- 

 vate. Stamens inserted on the corolla. 

 Ovary apocarpous ; carpels 2-4, 2-ovuled ; 

 styles basaj ; ovules erect. Utricles 2, 1- 

 seeded. Embryo curved ; cotyledons crum- 

 pled, in scanty albumen. Small herbs, erect 



or prostrate 667 



153. .CJJSCTTTE^:. Corolla-lobes 4-5. Sta- 

 mens inserted on the corolla-tube, with often 

 as many fimbriate scales below their in- 

 sertion, included. Disk 0. Ovary 2-celled ; 

 styles 2, free or connate ; ovules 2, erect in 

 each cell. Capsule 2-celled, circumsciss at 

 the base. Embryo spiral, in copious fleshy 

 albumen. Leafless parasitic filiform twining 

 herbs 568 



154. BORRAGINEJB. Corolla-lobes 4-5, 

 imbricate. Stamens often conniving into a 

 tube around the style, sometimes cohering 



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