387 



Fls very irregular: ovary 2-oelled: cells 



1-sd'ed. Polygalaceae, 

 Fls regular or nearly so. 

 No green foliage. Monotropeae in Eri- 

 caceae. 

 Foliage pellucid-punctate. 



Kutaceae 

 Stamens as many as the pet and opp 



them, i. e. alt with the oalyx-lobes. 

 These small or obsolete: pet valvate. 



Vitaceae. 

 Stamens when just as many as the 



pet alt with them. 

 Strong-scented shrub: Ivs opp, 2-foliate. 



Zygophyllaceae. 



Strong-scented herbs: los lobed or com- 

 pound. Geraniaceae. 

 Herbs not strong scented 

 Ovules 1-4 in each cell. 



Lvs all simple and entire. Linaceae. 



Lvs all opp, the latter with divisions or 

 Ifts not entire. Geraniaceae. 

 Ovules numerous. 



* - Stamens on the calyx: style 1. Lyth- 

 raceae. 



* - Stamens on the receptacle: los opp, 

 simple. 



Cells of the ovary as many as the sep, 



2or 5. Elatinaceae. 



Cells fewer than the sep, 3. Mollugo. 

 Shrubs on trees with opp simple Ivs. 

 Pinnately veined, not lobed. Celastra- 

 ceae. 



Palmately veined.lobed. Sapindaceae. 

 Shrubs or trees with alt lobed Ivs. Ster- 

 culiaceae. 



2. Ovary and fr inferior or mainly so. 

 Tendril-bearing herbs: fls monaecious or 



diaecious. Cucurbitaceae. 

 Shrubs or herbs, not tendril-bearing nor 

 diaeeious, nor umbelliferous. 



* Stamens as many as the small unguicu- 

 late pet and opp them: calyx valvate. 

 Rhamnaceae. 



* * Stamens if of the number of the pet 

 alt with them. 



a. Styles 2-5, distinct or united below. 

 Fr a many-seeded (or rarely 3-5-celled, 

 3-5-seeded) capsule. Saxifragaceae. 



Fr a 1-celled many-seeded berry. Ribes. 



b. Style 1, undivided: stigmas 1-4. 



Fl: ~ ; n cymes or a glomerate cluster. 



Corra-eae. 



Fi* lacemose, spicate, or axillary. 



Ovary 1-celled: herbage scabrous. 



Least 



O\ary 2-5, mostly 4-celled. Onagra- 



ceae. 



Herbs: fls in umbels: styles 2: fr dry. 



Umbelliferae. 



Herbs or shrubs: fls in umbels: styles 4 



or 5: fr berrv-like. Araliaceae. 



GAMGPKTALAE: petals more or less 



united into 1 piece. 



A. Ovary inferior, or at least largely so. 



* Stamens more numerous than the lobes 

 of the cor, 8 or 10. 



Distinct and free from it or nearly so. 



Ericaceae. 

 Monadelphous on its tube. Styracaceae. 



* * Stamens as many as the lobes of the 

 cor (5 or rarely 4), syngenesious. 



Fls in an involucrate head. Composi- 

 tae. 

 Fls separate, racemose or spicate. Lo- 



388 



beliaceae. 



* * * Stamens as many as the cor-lobea, or 

 at least 4, distinct. 



a. Nearly or quite free from cor: los alt: 



no stipules. 



Stamens distinct. Campanulaceae. 



Stamens more or less united. Nema- 

 cladus. 



b Inserted on the cor: Ivs opp or 

 whorled, with stipules or else in 

 whorles, quite entire. Rubiaceae. 



Without stipules, opp. Caprifoliaceae. 



* * * * Stamens only 3, fewer than the 

 lobes of the cor. 



Lvs opp: stamens distinct. Valertan- 

 aceae. 



Lvs alt: stamens often united. Cucur- 

 bitaceae. 

 B, Ovary superior (free) or mainly so. 



1. Stamens more numerous than the 

 lobes of the cor. 



Pistil 1, simple: Ivs compound. Legum- 

 inosae. 



Pistils several, simple: Ivs simple, fleshy. 

 Crassulaceae. 



Pistil compound with 3 styles. Fouqui- 

 era. 



Pistil compound with 1 undivided style. 



Ovary 3-10-celled: stamens distinct. 

 Ericaceae. 



Ovary partly or at length 1-celled: sta- 

 mens monadelphous. Styracaceae. 



2. Stamens as many as the divisions 

 of the cor and opp them. 



Styles 5: ovary and fr 1-seeded. Plum- 



baginaceae. 



Style 1: ovary and capsule several to 

 many-seeded, Primulaceae. 



3. Stamens as many as the lobes of the 

 cor and alternate with them, or fewer. 



* No green herbage, 

 cor regular. 



Stamens free: seeds very many, minute. 

 Monotropeae. 



Stamens in its throat: fr 10-20-celled. 

 Lennoaceae. 



Stamens on the tube: fr 2-celled. Cus- 

 cuta. 

 Cor irregular. Orobanchaeae. 



* * With ordinary green herbage. 



* Cor regular or nearly so: stamens not 

 didyr.amous. 



Cor scarious and veinless: stemless 



herbs. Plantagiiiaceae. 

 Cor more or less veiny. 

 Stamens 2 or 3, but parts of the cor 



4 or S.Oleaceae. 



Stamens sometimes 5, sometimes 4, as 

 many as the cor-lobes. 



* - Pollen in solid waxy masses: fr a 

 pair of follicles. Asclepiadaceae. 



* - Pollen in powdery grains. 



Ovaries 2: fr a pair of follicles. Apocyu- 



aceae. 



Ovary 4-lobed, forming 4 separate or 

 separable seed-like nutlets. Borragin- 



aceae. 



Ovary single and entire. 

 Style 3-cleft at apex: capsule 3-seeded: 



cor convolute. Polemoniaceae. 

 Style or stigmas 2 or L 

 Ovules and seeds at most 4, large, with 



large embryo and little or no albumen: 



peduncles axillary. Convolvulaceae. 

 Ovules few or numerous: embryo small, 



