CONSPECTUS OF THE ORDERS CONTAINED IN 

 THE THIRD VOLUME. 



Class I. DICOTYLEDONES. 



Subclass I. POLYPETAL^. 



Cohort XV. Umbellales. Flowers regular (or in some genera the outer petals 

 larger). Ovary inferior 2- oo-celled ; ovules solitary, pendulous. Stamens rarely 

 indefinite. Albumen copious, fleshy. 



LXVIII. Umbkllifer^. Herbs, rarely shrubs or trees, usually with divided 

 alternate sheathing leaves and umbellate flowers. Ovary 2-celled ; styles 2. Carpels 

 dry in fruit, indehiscent and separating. 



LXIX. Araliace^. Shrubs or trees, with alternate divided leaves and umbellate 

 capitate racemose or spicate flowers. Ovary 2-co -celled. Fruit dry or drupaceous, not 

 separating into its constituent carpels. 



Subclass II. GAMOPETAL^. 



Cohort XVI. Rubiales. Calyx-limb usually distinct, toothed or lobed. Stamens 

 epipetalous, isomerous, alternate with corolla-lobes. Ovary inferior 2-12- (rarely 1-) 

 celled. Albumen usually copious, very rarely wanting. Leaves opposite or whorled. 



LXX. RuBiACEJE. Flowers regular, very rarely irregular. Stipules interpetiolar 

 (absent or leaf-like in GaliecB). 



Cohort XVII. Asterales. Calyx-limb obsolete or reduced to a pappus. Stamens 

 epipetalous, isomerous or fewer. Ovary inferior, 1 -celled, 1-ovulate. 



LXXI. Valeriane-s;. Leaves opposite exstipulate. Flowers irregular or regiilar, 

 usually cymose. Stamens 1 or more ; anthers free. Ovule pendulous. 



LXXII. Dipsace^. Leaves opposite, exstipulate. Flowers capitate, each with 

 the ovary enclosed in a tubular sheath Anther free. Ovule pendulous. 



LXXIII. CoMPosiTiE. Leaves alternate or opposite. Flowers capitate. Ajithers 

 syngenesious. Ovule erect. 



Cohort XVIII. Campaxales. Calyx-limb toothed or partite, rarely 0. St^imcns 

 usually epigynous and free from the corolla. Ovary inferior, 1- oo-celled, 1-qo -ovulate. 



LXXIV. GooDENOviKiE {SccBvolo). Corolla oblique, split behind. Anthers free. 

 Indusium cupuliform. Juice not milky. 



LXXV. Campanulace^. Flowers regular or irregular. Anthers free or .syngene- 

 sious. Style not indusiate. Juice usually milky. 



Cohort XIX. Ericales. Flowers regular or nearly so. Corolla hypogynous (in 

 our species). Stamens as many or twice as many as corolla-lobes. Ovary 4-5 (-oc )- 

 colled. 



