APETALE. 
Leaves unequally pinnatifid: calyx-tubs in fertile flowers 3-toothed........Datisca, 
Leaves glaucous: white flowers in clustered umbels...... a ies's bie sonia es e's Comandra, 
Leaves amall, crenate: capsule axillary, obcordate.............. ..-Chrysosplenium, 
Leaves opposite, Calyx salverform: capsule l-seeded. (See Flora)..Nyctaginaces. 
Calyx 4-lobed: stamens 4: flowers axillary............. Ludwigzih, 
Calyx (corolla) tubular to rotate.........0...ee0- Caprifoliacesr, 
Leaves in whorls, Calyx 4-lobed or entire, Aquatic...........0.06 Haloragesr, 
B. OVABY SUPERIOR (free from the calyx). 
a. Herbs: leaves alternate, radical or in a whorl. 
Sepals petaloid, persistent; akene 1, 3-sided or flat. (See Flora)....Polygonaces. 
persistent: fleshy root-parasite, waxy-white bracts.......Allotropa, 
deciduous: carpels several or many........---0 Ranunculaces, 
Sepals green: racemes close: capsules flat, 1-2-celled........2....006 ...Cruciferes, 
minute flowers opposite the leaves...........2cseee8 e+e. Alchemilla, 
Sepals none: dense oblong spike with petaloid involucre. (See Flora)....Anemopsis, 
spike naked: radical leaf 3-foliolate........0¢...seceeeceeee ee Achlys, 
b. Herbs: leaves opposite entire: capsule 1-celled except in the last. 
Stems square: calyx 4-toothed, with smaller teeth between, axillary..... -Ammania, - 
Involucre calyx-like or surrounding a head of flowers. (See Flora)..Nyctaginacess, 
Flowers small, axillary, sessile white: stigma 1............. eeiewiimdwn (emawis Glauz, 
Flowers green, terminal: stigmas 3 to 5..... aeisutes.chaameee .-..CaryophyLlaceszs, 
Flowers axillary: capsule 3-5-celled.......00-.0-0 sisvaivieida a aleisie ties Sees Ficoidess, 
c. Shrubs or trees: leaves alternate, entire (except in the last): flowers perfect. 
Calyx tubular, bearing the stamens: akene plumose-tailed............. Cercocarpus, 
Calyx 6-parted, yellowish: leaves very aromatic. (See Flora).......... Lauracess. 
Calyx 4-5-cleft, greenish: fruit berry-like, 2-4-seeded..............- Rhamnacess, 
Calyx 3-4-lobed, yellow: stamens 6 to 12, exserted................. Dirca palustris. 
Calyx 5-cleft, large, yellow: stamens 5, united.............csceeees Sterculiacess, 
d, Trees or woody climbers with opposite pinnate leaves. 
Trees: flowers diwcious: winged fruit in drooping panicles,..............- Oleacess, 
flowers perfect: fruit 2-winged, 2-seeded.............seeeeees Sapindaces, 
Climbers: sepals 4: stamens and pistils many: akenes tailed............... Clematis, 
« Dicectous shrubs with drooping stlky gray aments........00..ecccccencnee Garrya, 
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