1	"Plants marine"	2
1	"Plants terrestrial, epiphytic, or fresh water aquatics"	3
2	"Leaf sheaths, if present without ligules and not auriculate; gynoecium of 3 or more united carpels"	Hydrocharitaceae
2	"Leaf sheaths preset, with ligules and auricles; gynoecium of 2 free carpels"	Cymodoceaceae
3	"Plants minute, floating aquatic herbs, the plant body reduced to an undifferentiated thallus-like fron"	Araceae
3	"Plants larger, terrestrial, epiphytic or aquatic but with well differentiated leaves"	4
4	"Leaves pinnately or palmately divided; plants often trees with well developed trunks"	Arecaceae
4	"Leaves simple"	5
5	"Leaves at least 1 m long, margins and underside of midribs spiny; plants trees with stilt roots forming from lower part of trunk"	"Pandanaceae {Pandanus kirkii}"
5	"Leaves and habit not as above"	6
6	"Gynoecium composed of 2 or more free carpels"	7
6	"Gynoecium composed of 1 carpel or 2 or more united carpels"	9
7	"Flowers in whorls; tepals 6, the inner tepals petal-like, clearly different from the outer tepals"	Alismataceae
7	"Flowers in spikes; tepals 1-4, all alike"	8
8	"Leaves all basal; spikes 2-branched"	"Aponogetonaceae {Aponogeton}"
8	"Leaves inserted along the stems; spikes simple"	"Potamogetonaceae {Potamogeton}"
9	"Ovaries inferior or semi-inferior; flowers with a perianth"	10
9	"Ovaries superior; flowers with or without a perianth"	21
10	"Tepals all alike"	11
10	"Outer tepals sepal-like"	17
11	"Plants aquatic herbs"	Hydrocharitaceae
11	"Plants terrestrial or epiphytic, herbs or shrubs"	12
12	"Stamens 1 per flower; pollen aggregated into pollinia; ovaries twisted"	Orchidaceae
12	"Stamens 3 or 6; pollen not aggregated into pollinia; ovaries not twisted"	13
13	"Stamens 3"	Iridaceae
13	"Stamens 6"	14
14	"Flowers in large panicles"	Asparagaceae
14	"Flowers solitary or in raceme- or umbel-like inflorescences"	15
15	"Plants with bulbs; flowers in umbel-like inflorescences or solitary"	Amaryllidaceae
15	"Plants with corms or rhizomes, not bulbs; flowers solitary or in racemes"	16
16	"Leaves entire, hairy; flowers yellow"	"Hypoxidaceae {Hypoxis angustifolia}"
16	"Leaves setose-serrate on the margins near the tip and on the underside of the midvein; flowers white fluched with pink, mauve, or purple"	"Velloziaceae {Xerophyta}"
17	"Plant aquatic herbs; flowers radially symmetric"	Hydrocharitaceae
17	"Plants terrestrial or epiphytic herbs although sometimes with a treelike habit; flowers more or less bilaterally symmetric"	18
18	"Fertile stamens 5; fruits bananas; plants 3-6 m tall, with a treelike habit"	"Musaceae {Musa (cultivars)}"
18	"Fertile stamens 1; fruits not bananas; plants less than 3 m tall"	19
19	"Stamens not accompanied by 1 or more petal-like staminodes; pollen aggregated into pollinia; ovaries 1-celled"	Orchidaceae
19	"Stamens accompanied by 1 or more petal-like staminodes; pollen not aggregated into pollinia; ovaries 3-celled"	20
20	"Outer tepals united into a tube; anthers with 2 thecae"	"Zingiberaceae {Siphonochilus aethiopicus}"
20	"Outer tepals free; anthers with 1 theca"	"Cannaceae {Canna x generalis}"
21	"Perianths absent, cuplike, or reduced to bristles or scales"	22
21	"Perianths present, consisting of distinct, free or united tepals"	25
22	"Flowers arranged in small spikes, with scale-like bracts, bisexual or unisexual"	23
22	"Flowers not arranged in small spikes, without scale-like bracts"	24
23	"Each flower subtended by a single bract; pistillate ovaries sometimes enclosed by in a flask-like structure; stems usually with solid internodes and 3-angled at least beneath the inflorescences; leaf sheaths usually closed"	Cyperaceae
23	"Each flower enclosed by two bracts; spikelets usually subtended by 2 bracts; stems often with hollow internodes, terete or compressed; leaf sheaths usually open"	Poaceae
24	"Leaves wide, entire or divided; inflorescences composed of a spadix surrounded by a spathe at least at the base"	Araceae
24	"leaves, narrow, long, linear; inflorescences spikelike, not enclosed in a spathe"	"Typhaceae {Typha domingensis}"
25	"Inner tepals petal-like, very different from the outer"	Commelinaceae
25	"All tepals more or less alike"	26
26	"Plants woody climbers, to 5 m long; leaves inserted on the stems, ending in tendril; tepals 2-3 mm long, white; fruits drupes"	"Flagellariaceae {Flagellaria guineensis}"
26	"Plants herbaceous or, if woody, not climbing; leaves not ending in a tendril or, if so, tepals usually larger and brightly colored; fruits berries, capsules, or schizocarps"	27
27	"Tepals scale-like, dry"	"Juncaceae {Juncus}"
27	"Tepals petal-like"	28
28	"Leaves reduced to scales or spines, their function taken over by modified green branches (cladodes)"	Asparagaceae
28	"Leaves well-developed, sometimes produced after the flowers"	29
29	"Fruits berries"	Asparagaceae
29	"Fruits capsules or schizocarps"	30
30	"Styles more or less deeply 3-branched or styles 3"	Colchicaceae
30	"Styles simple, sometimes 3-lobed"	31
31	"Plants with bulbs"	32
31	"Plants with rhizomes"	33
32	"Inflorescences racemes or spikes"	Asparagaceae
32	"Inflorescences umbel-like"	Amaryllidaceae
33	"Anthers basifixed; leaves thin, without teeth; flowers not tubular, usually white; rhizomes not yellow when cut"	Asparagaceae
33	"Anthers dorsifixed; leaves often thick and with marginal teeth; flowers often red to yellow, sometimes white, if white, rhizomes yellow when cut"	Asphodelaceae