136:(A)
previous:82
Ovary superior or nearly so.
next:137
136:(B)
Ovary inferior or hemi-inferior.
next:151
137:(A)
previous:136
Ovary 1, 1-5-locular.
next:138
137:(B)
Ovaries 3-more, free or connate at base only, rarely also below the single style, flowers then solitary and involucrate in a secund spatheate spike (Rapateaceae)
next:149
138:(A)
previous:137
Ovary 1-locular. Ovules numerous.
next:139
138:(B)
Ovary 2 - 5-locular.
next:143
139:(A)
previous:138
Leaves oblong to ovate. Stamens 6-12. Ovules anatropous. Endosperm fleshy or cartilaginous.
next:140
139:(B)
Leaves linear. Fertile stamens 3. Ovules atropous. Endosperm mealy.
next:141
140:(A)
previous:139
Rhizomatous herbs. Leaves herbaceous, in a single pair or whorl. (Trilliaceae)
Trilliaceae
140:(B)
Evergreen shrubs. Leaves leathery, numerous, alternate. (Philesia, Philesiaceae)
Philesiaceae
141:(A)
previous:139
Leaves radical, stem sometimes with a few scales; apex entire. Flowers in spikes or in capitules. Anthers with longitudinal slits.
next:142
141:(B)
Leaves cauline, apex bidentate. Flowers solitary or in umbels. Anthers with an apical pore. Sepals equal, 3. Petals free.
142:(A)
previous:141
Sepals homomorphic, 2 or 3. Petals connate. Style with 3 basal appendages. (Abolbodaceae)
142:(B)
Sepals heteromorphic, 3. Petals free. Style without basal appendages.
143:(A)
previous:138
Stamens 1-6. Ovary 2- or 3-locular. Ovules usually atropous. Embryo remote from the hilum.
next:144
143:(B)
Stamens 6-12. Ovary 3-5-locular. Ovules anatropous. Embryo close to the hilum.
next:146
144:(A)
previous:143
Flowers bisexual, not minute, usually in cincinni. Stigma 1, simple, or obscurely 3-lobed. Ovules usually several per locule, axillary, ascending.
next:145
144:(B)
Flowers unisexual, minute, in involucrate capitules, rarely axillary. Stigmas 2-6. Ovule 1 per locule, subapical, pendulous. Leaves usually narrow.
145:(A)
previous:144
Flowers racemose, in spikes or in racemes. Non-succulent, glandular-pubescent herbs. Leaves linear. Petals free. Stamens 6; filaments glabrous. Ovary 3-locular. Ovules 2 per locule. Fruit a capsule. Aru Isl., Australia. (Cartonemataceae,)
Cartonemataceae
145:(B)
Flowers cymose, usually in cincinni. Plants otherwise.
146:(A)
previous:143
Leaves often thorny-dentate, stiff and leathery, if herbaceous in a single pair or whorl. Anthers with introrse to latrorse longitudinal slits. Stigmas 3.
next:147
146:(B)
Leaves entire, not stiff and leathery, numerous. Anthers with 1, or 2, or 4 apical pores. Style 1; stigma punctiform. Flowers each with an involucre of several bracts, in spatheate capitules or spikes. Calyx and corolla contort.
147:(A)
previous:146
Leaves usually thorny-dentate, stiff, leathery, parallel-nerved, numerous, not in a single pair or whorl. Sepals and petals 3.
next:148
147:(B)
Leaves herbaceous, entire, reticulately nerved, in a single pair or whorl. Sepals and petals (2-)3-5(-8) (Trilliaceae)
Trilliaceae
148:(A)
previous:147
Bracts green or brownish, rarely white. Flowers dioecious. Petals dry. Ovule 1 per locule, basal. Endosperm cartilaginous. Australia to New Guinea. (Lomandra, cf. also Liliaceae s.s.)
148:(B)
Bracts usually brightly coloured. Flowers usually bisexual. Petals not dry. Ovules few to numerous per locule, axillary. Endosperm mealy. Tropical America, many cultivated, occasionally escaping elsewhere in the tropics.
149:(A)
previous:137
Anthers extrorse or with apical pore(s) Ovules I or 21, basal, rarely a few and axial on 1 placenta.
next:150
149:(B)
Anthers introrse. Ovules many, covering the entire inner face of the carpels. Flowers solitary or in umbels. Fruit a follicle. (Limnocharitaceae, sometimes also in Alismataceae)
Limnocharitaceae
150:(A)
previous:149
Flowers without an involucre, in bracteate panicles, thyrses, or umbels, rarely solitary. Carpels 6-many, free, rarely connate at base, each with 1 free style. Fruit dry, indehiscent.
150:(B)
Flowers each involucrate by several bracts in a secund, spatheate spike. Carpels 3, connate at base and below the single style. Fruit a capsule, only 1 locule fertile. (Spatanthus)
151:(A)
previous:136
Fertile stamen 1. Flowers zygomorphic or asymmetric.
next:152
151:(B)
Fertile stamens 2-more.
next:155
152:(A)
previous:151
Leaves usually petiolate and pinninerved. Stamen free from the style or nearly so. Staminode(s) large, usually petaloid. Ovules and seeds not minute. Endosperm present.
next:153
152:(B)
Leaves usually sessile and parallel-nerved. Stamen completely adnate to the style or nearly so. Staminodes minute or absent. Endosperm absent.
153:(A)
previous:152
Flowers zygomorphic or asymmetric. Sepals 3, connate, or with a deep slit. Anther with 2 fertile thecae, connective often enlarged. Leaves ligulate. Ovules numerous. Embryo straight.
next:154
153:(B)
Flowers asymmetric. Sepals 3, usually free. Anther with 1 fertile and 1 petaloid theca. Back to.
next:108
154:(A)
previous:153
Leaves distichous. Sheaths open. Ovary apically often with erect, sometimes large glands, 1- or 3-locular. Plants aromatic.
154:(B)
Leaves in a spiral or 4-stichous. Sheaths initially closed. Ovary apically with depressed, supra-septal glands, 2- or 3-locular. Supra-terranean parts not aromatic. (Costaceae)
Costaceae
155:(A)
previous:151
Flowers usually actinomorphic. Stamens 2-16, sometimes some staminodial, when 5 plants aquatic.
next:156
155:(B)
Flowers zygomorphic. Stamens 5. Terrestrial. Leaves petiolate, blade large, oblong or ovate, pinninerved, transversally veined. Flowers perigynous, orchidaceous.
156:(A)
previous:155
Aquatic herbs. Flowers usually unisexual, solitary, or in spatheate cymes. Stamens 2-16. Anthers extrorse or latrorse. Ovary 1-locular, sometimes incompletely 6-15-locular. Endosperm absent.
156:(B)
Terrestrial or epiphytic plants. Flowers bisexual; inflorescences otherwise. Stamens 6. Anthers introrse. Ovary 3-locular. Endosperm copious.
next:157
157:(A)
previous:156
Plants not climbing, often epiphytic, stem usually not developed. Leaves usually radical, margins usually thorny, usually lepidote. Flowers in spikes, or in racemes, or in panicles, or in capitules, usually with coloured bracts. Fruit a berry, or dry and indehiscent (Bromelioideae), or a septicide capsule (Pitcairnioideae)
157:(B)
Plants climbing or erect with a well-developed stem. Leaves alternate, entire, glabrous. Flowers in umbels with green bracts. Fruit a loculicide capsule. (Bomarea, Alstroemeriaceae)
Alstroemeriaceae