Flora Zambesiaca
Keys
Back to Browse Back to SearchKey to Annonaceae
| 1 | a | Carpels free or solitary, or if united forming a multilocular syncarp; stigmas ± erect; petals free or slightly united at the base, equal or unequal, rarely with undulating margins go to 2 |
|---|---|---|
| b | – Carpels united into a 1-locular ovary with parietal placentas: stigmas radiating; petals united in the lower part, very unequal, often with undulating margins Key to Monodora FZ account for Monodora |
| 2 | a | Carpels free or solitary in fruit go to 3 |
|---|---|---|
| b | – Carpels united in fruit to form a fleshy syncarp Key to Annona FZ account for Annona |
| 3 | a | Anther-thecae not septate, filaments free or absent; carpels indehiscent go to 4 |
|---|---|---|
| b | – Anther-thecae transversely septate, filaments united at the base, enclosing the ovaries; carpels dehiscent Key to Xylopia FZ account for Xylopia |
| 4 | a | Peduncles neither hooked nor zig-zag, frequently absent go to 5 |
|---|---|---|
| b | – Peduncles hooked or zig-zag owing to persistent leaf-bases, ± thickened, leaf-opposed Key to Artabotrys FZ account for Artabotrys |
| 5 | a | Seeds oblique to horizontal; stamens linear to obconic, or elliptic-oblong, numerous go to 6 |
|---|---|---|
| b | – Seeds vertical; stamens cuneate-quadrate or clavate, rarely linear, numerous or few go to 11 |
| 6 | a | Flowers terminal or extra-axillary; outer petal-whorl imbricate; stellate hairs present; carpels numerous Key to Uvaria FZ account for Uvaria |
|---|---|---|
| b | – Flowers axillary or on the old wood; outer petal-whorl valvate; if stellate hairs present then carpel solitary go to 7 |
| 7 | a | Petals 6; flowers usually bisexual go to 8 |
|---|---|---|
| b | – Petals 4; flowers monoecious FZ account for Uvariopsis |
| 8 | a | Petals free, in 2 whorls, not plicate in bud go to 9 |
|---|---|---|
| b | – Petals united at the base, plicate in bud Key to Hexalobus FZ account for Hexalobus |
| 9 | a | Plant with only simple hairs; carpels 3–? go to 10 |
|---|---|---|
| b | – Plant with stellate and simple hairs; carpel solitary FZ account for Dielsiothamnus |
| 10 | a | Sepals enclosing the petals in bud; flower-buds conic, ± winged FZ account for Uvariastrum |
|---|---|---|
| b | – Sepals much shorter than the petals in bud; buds depressed-globose, not winged FZ account for Uvariodendron |
| 11 | a | Calyx entire and completely enclosing the petals in bud, glabrous; inner petals imbricate FZ account for Cleistochlamys |
|---|---|---|
| b | – Calyx of 3 valvate sepals much shorter than the petals in bud, usually pubescent; inner petals usually valvate go to 12 |
| 12 | a | Petals in 2 whorls, free; flowers usually extra-axillary Key to Popowia FZ account for Popowia |
|---|---|---|
| b | – Petals contiguous or shortly united at the base in 1 whorl, but biseriateabove; flowers usually axillary or supra-axillary FZ account for Enneastemon |
