OAMOPETAL^E. 9 



DIVISION 2. GAMOPETAJL^E. 



A. OVARY INTERIOR (adherent to the calyx) or mainly so. 



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



Stamens 10, those alternate with small corolla-lobes sterile, inflexed Samolua, 77 



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



Style 2-clcf t: flowers in a flower-like head Composites, 69 



Style and stigma entire: flowers irregular. (See p. 13) Lobeliaceae, 69 



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



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



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



Leaves opposite, corolla mostly 5-lobed Caprifoliaceae, 66 



Leaves whorled or sometimes opposite: corolla 4-lobed RuDiace, 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 Valerianacese, 68 



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



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



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

 1. Flowers regular or nearly so. 



* Stamens twice as many as the lobes of the corolla. 



Corolla bell-shaped or inflated-ovoid Ericaceae, 7l 



Corolla deeply 5-8-cleft, the base united with the filaments Styracacese, 77 



Corolla 5-cleft: pistils or styles 5: fleshy herbs Crassulace, 57 



* * Stamens as many as the corolla-lobes. 



a. Style 1, stigma 1: leafless, root-parasite PhoUsma, 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 t 76 



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



Flowers rotate to f uunelf orm or tubular. Solanacege, 92 



Tall shrub: 3 to 5 calyx-like bracts: flowers yellow Fremontia, 35 



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



Flowers white or pinkish in terminal cymose clusters Apocynacese, 77 



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



Leaves opposite, ovate, sessile: flowers rotate, axillary, solitary AnagaUi*, 77 



Leaves clustered at the top of the stem, bracts below: corolla rotate Tritntalis* 76 



