A PETALS 11 



Leaves unequally pinnatifid: calyx-tube in fertile flowers 3-toothed DaiUca, 64 



Leaves glaucous: white flowers in clustered umbels Comandra. 



Leaves small, crenate: capsule axillary, obcordate Chryaosplenium, 56 



Leaves opposite. Calyx salverform: capsule I -seeded. (See Flora). .Nyctaginaceas. 



Calyx 4-lobed: stamens 4: flowers axillary Ludwigia, 60 



Calyx (corolla) tubular to rotate Caprifoliaceae, 66 



Leares in ^horla. Calyx 4-lobed or entire. Aquatic Halorageas, 69 



B. OVABY SXTFESIOK (free from the calyx). 



a. Herha: leaves altematt, radical or in a whorl. 

 Sepals petaloid, persistent; akene 1, 3-sided or flat. (See Flora). . ..Polygonacess. 



persistent; fleshy root-parasite, waxy- white bracts AUotropa, 74 



deciduous: carpels several or many Banunculacese, 14 



Sepals green: racemes close: capsules flat, 1-2-ceIled Cruciferss, 19 



minnte flowers opposite the leaves Alchemilla, 52 



Sepals none: dense oblong spike with petaloid involucre. (See Flora) .... Anemopais, 



spike naked: radical leaf 3-foliolate Achlys, 17 



h. Herba; leavea oppoaite entire: capaule 1-celled except in the laat. 



Stems square: calyx 4-toothed, with smaller teeth between, axillary Ammania, 59 



Involucre calyx-like or surrounding a head of flowers. (See Flora). . NyctaginacesB. 



Flowers small, axillary, sessile white: stigma 1 Olaux, 76 



Flowers green, terminal: stigmas 3 to 5 CaryoplayllacesB, 27 



Flowers axUlary: capsule 3-5-celled FicoidesB, 6.''^ 



e. Shrubs or trees: leaves alternate, entire {except in the laat) : flowers perfect. 



Calyx tubular, bearing the stamens: akene plumose-tailed Cercocarpus, 50 



Calyx 6-parted, yellowish: leaves very aromatic. (See Flora) LauracesB. 



Calyx 4-5-cleft, greenish: fruit berry-like, 2-4-seeded BhamnaceaB, 37 



Calyx 3-4-lobed, yellow: stamens 6 to 12, exserted Dirca paluetris. 



Calyx d-cleft, large, yellow: stamens 5, united Sterculiaceae, 3S 



d. Trees or woody climbers with opposite pinnate leave*. 



Trees: flowers dioecious: winged fruit in drooping panicles Oleacesa, 77 



flowers perfect : fruit 2- winged, 2-Beeded Sapindacese, 38 



Climbers: sepals 4: stamens and pistils many: akenes tailed Clematis, 14 



«. Duzcioua ahruJM with drooping silky gmy amenta Oarrya, 66 



