1	"Plant parasitic on stem of woody host plant"	Viscaceae
1	"Plant free-living, rooted in ground"	2
2	"Leaves fleshy, scale-like or linear to oblanceolate; catkins erect"	3
2	"Leaves non-fleshy, +- thin to leathery, with well-developed flat blades, generally wider; catkins erect to drooping"	4
3	"Leaves scale-like; distal stems +- fleshy, jointed"	Chenopodiaceae
3	"Leaves linear to oblanceolate, +- cylindric; distal stems not jointed"	"Sarcobataceae {Sarcobatus}"
4	"Leaves opposite"	"Garryaceae {Garrya}"
4	"Leaves alternate"	5
5	"Leaf compound"	6
5	"Leaf simple"	7
6	"Plants dioecious, evergreen; staminate catkin-like inflorescence branched --- inflorescence resembles catkin when young, but is actually a branched panicle"	"Anacardiaceae {Pistacia}"
6	"Plants monoecious, deciduous; staminate catkin unbranched"	Juglandaceae
7	"Fruit capsule; seeds 3--many"	8
7	"Fruit dry or fleshy, indehiscent; seed generally 1"	9
8	"Ovary 3-lobed; seeds 3, without a tuft of hairs; stems brittle"	"Euphorbiaceae {Acalypha}"
8	"Ovary unlobed; seeds several--many, each with a tuft of hairs; stems not brittle"	Salicaceae
9	"Shrubs of +- saline desert habitats; leaves densely stellate-hairy or scaly-puberulent and +- glabrous in age"	Chenopodiaceae
9	"Shrubs or trees, generally of moister habitats; leaves glabrous or variously hairy"	10
10	"Milky latex present; sepals of pistillate inflorescence enlarged and fleshy in fruit, ripening together with the ovaries as a spheric to ellipsoid or ovoid multiple fruit"	Moraceae
10	"Milky latex 0; sepals 0 or if present, not becoming fleshy; ovaries ripening as individual drupes, nuts, or winged achenes"	11
11	"Leaf blade dotted with minute, bead-like, peltate resin glands, aromatic; stipules 0; staminate catkins short, densely flowered; sepals 0; fruit a papillate, wax-coated drupe, free of subtending bracts Or an achene enclosed between a pair of spongy bractlets"	Myricaceae
11	"Leaf blade not dotted with minute, bead-like resin glands (except in some Betulaceae), generally not aromatic; stipules formed but generally early-deciduous; staminate catkins elongated, either +- flexible and drooping or stiff and spike-like; sepals present in staminate catkins (except _Corylus_ in Betulaceae); fruit a nut or winged achene"	12
12	"Fruits many, small, flattened, winged achenes, clustered in a cone-like fruit catkin; plant deciduous; pistillate flower calyx 0"	Betulaceae
12	"Fruits 1--3, each a well-developed nut, subtended or surrounded by a husk-, cup-, or spiny, bur-like involucre; plant deciduous or evergreen; pistillate flower calyx fused to ovary, sepal tips surrounding style base"	13
13	"Fruit a nut enclosed in a tubular, husk-like involucre; involucral bractlets 2, papery; staminate catkins drooping, densely flowered, bractlets +- concealing flowers, sepals 0; deciduous shrub"	"Betulaceae {Corylus}"
13	"Fruit a nut in a scaly cup-like involucre or 1--3 nuts enclosed in a spiny, bur-like involucre; involucral bractlets many, scaly or spiny; staminate catkins very slender and drooping or stiff and spike-like, bractlets inconspicuous, sepals present; deciduous or evergreen tree or shrub"	Fagaceae