OAMOPETALA 



DIVISION 2.— GAMOPETAL^. 



A. OVARY INFERIOR (adherent to the calyx) or mainly bo. 



Stamens 8 or 10: corolla-lobes 4 or 5: shniba Ericaceae, 71 



Stamens 10, those alternate with small corolla-lobes aterile, iaflezed Samolus, 77 



Stamens 5 (rarely 4), united into a tube. 



Style 2-cleft: flowers in a flower-like head CompositaB, 69 



Style and stigma entire: flowers irregular. (Seep. 13) Lobeliacese, 69 



Stamens 4 or 5, distinct, growing at the base of the corolla CampanulaceaB, 70 



Stamens ou the corolla-tube: leaves opposite or whorled. 



Leaves connate: corolla 4-lobed: stiff, prickly herbs Dipsaciut, 69 



Leaves opposite, corolla mostly 5-lobed CaprifoliaceaB, 66 



Leavea whorled or sometimes opposite: corolla 4-lobed RuDiaceee, 68 



Leaves unequal: prostrate: calyx corolla-like. (See Cal. Flora.) Abronia. 



Stamens only 3: corolla 5-6-lobed: calyx -lobes minute or none. Herbs. 



Leaves opposite; stamens distinct: erect herbs ValerianaceaB, 68 



Leaves palmately nerved, alternate: tendril -bearing vines Cucurbitacea9, 64 



Stamens apparently 1, really 3 united: flowers monoecious Cucurbitaceee, 64 



B. OVARY SUPERIOR (free from the calyx) or nearly so. 

 1. Flowers regular or nearly so. 



• Slamena twice as many a» the lobea of the eoroRcu 



Corolla bell-shaped or inflated-ovoid Ericacesb 7i 



Corolla deeply 5-S-cleft, the base united with the filaments StyracacegB, 77 



Corolla 5-cleft: pistils or styles 5: fleshy herbs CrassulaceEB 57 



* • Stamens as many as the corolla-lobes. 



a. Style 1, stigma 1 : leafless, root-parasite Pholisma 75 



b. Style 1, stigma 1: leaves entire {lobed in the first and last). 



Leaves mostly radical, reniform: stamens unequal Romanzoffia, 87 



Leaves all radical; flowers spicate, colorless, scarious Plantaginacese, 109 



corolla reflexed: anthers purple-black Dodecatheon^ 76 



Leaves alternate. Spikes coiled: ovary in 4 parts Borraginace® 87 



Flowers rotate to funnelform or tubular Solanaceee 92 



Tall shrub: 3 to 5 calyx-like bracts: flowers yellow Freinontia^ 35 



Leaves opposite (at least below), entire: juice milky: ovaries 2; stigmas united. 



Flowers white or pinkish in terminal cymose clusters Apocynaceee. 77 



Flowers in umbels: sepals and petals reflexed or rotate Asclepiadacece, 77 



Leaves opposite, ovate, sessile: flowers rotate, axillary, solitary Anagallis, 77 



Leaves clustered at the top of the stem, bracts below: corolla rotate TritntaJis, 7ft; 



