16 ENDOGENS OR MONOCOTYLEDONS. 



b. Herbs: leaves opposite, entire: capsule 1-celled except in the last. 



Stems square: calyx 4-toothed, with smaller teeth between, axillary Ammania, 124 



Involucre calyx-like or surrounding a head of flowers Nyctaginacese, 68 



Flowers small, axillary, sessile, white: stigma 1 Glaux, 141 



Flowers green, terminal: stigmas 3 to 5 Caryophyllaceae, 24 



Flowers purplish, in axillary clusters, minute. . r Illecebracese, 25 



Flowers axillary: capsule 3-5 celled Ficoideae, 43 



c. Shrubs or trees: leaves alternate, entire (except in the laxt): flowers perfect. 



Calyx tubular, bearing the stamens: akene plumose-tailed Cerocarpus, 115 



Calyx 6-parted, yellowish: leaves very aromatic Liauracese, 71 



Calyx 4-5 cleft, greenish: fruit berry-like, 2-4 seeded Rhamnaceae, 29 



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



Calyx 5-cleft, large, yellow: stamens 5, united , Sterculiaceae, 28 



d> Trees or woody climbers ivith opposite pinnate leaves. 



Trees: flowers dioacious, winged fruit in drooping panicles Oleaceas, 50 



flowers perfect: fruit 2-winged, 2-seeded Sapindacese, 30 



Climbers: sepals 4: stamens and pistils many, akenes tailed Clematis, 79 



e. Diozcious shrubs with drooping silky grey aments Garrya, 131 



CLASS II ENDOGENS OR MONOCOTYLEDONS. 



A. OVARY SUPERIOR. 



Pistils 8 to many distinct or united carpels; flowers in whorls Alismaceae, 72 



Pistil 3-carpeled, ovary 3-celled, or at least 3-sided, Liliaceee, 73 



Pistil 2-celled: red flowers in an umbel J Clintonia, ] 88 



small perianth, 4-parted: stamens 4 Maianthemum, 184 



B. OVARY INFERIOR. 



Flowers irregular: anthers 1 or 2 on the pistil Orcliidacese, 72 



Flowers regular: anthers 3, extrorse , , Iridaceae, 73 



