The flowering plants of Africa: An analytical key to the genera of African phanerogramsThonner, Franz
Science
The flowering plants of Africa: An analytical key to the genera of African phanerograms
Thonner, Franz
Angiosperms -- Africa; Plants -- Africa
19. Style long. Ovules 2. Peduncles thick and hooked. Climbing shrubs.
(See 9.) =Artabotrys= R. Br.
Style short or wanting. 20
20. Ovules 1-2 to each carpel, rarely 3-8, and then fruits constricted
between the seeds, and young branches, leaves and flowers glabrous or
clothed with simple hairs. Carpels usually numerous. 21
Ovules 10-30 to each carpel, rarely 8, but then fruits not constricted
between the seeds, and young branches, leaves and flowers clothed with
stellate hairs. Carpels usually few. 22
21. Fruit-carpels with a single seed appressed to the pericarp, or with
2-8 seeds, and then constricted between them. Style present. Flowers
hermaphrodite.--Species 9. Tropics. =Unona= L. f.
Fruit-carpels with a single seed not appressed to the pericarp, or
with 2 seeds without a distinct constriction between them. Ovules
1-2.--Species 8. Tropics. Several species yield timber. =Polyalthia=
Blume
22. Sepals small. Plants covered with stellate hairs.--Species 2.
Central Africa. (Under _Unona_ L. f.) =Meiocarpidium= Engl. & Diels
Sepals large. Plants covered with simple hairs or glabrous.--Species 3.
Central Africa. =Uvariastrum= Engl.
23. (11.) Ovules 1-2 in each carpel. 24
Ovules numerous in each carpel. 26
24. Carpels united as to the ovary and sunk in the receptacle,
numerous, one-seeded. Flowers unisexual, with two large bracteoles
enclosing the bud. Sepals 3, small.--Species 2. Equatorial West Africa.
(Under _Anona_ L.) =Anonidium= Engl. & Diels
Carpels free. Flowers hermaphrodite. 25
25. Sepals large, leathery, cohering in the bud. Outer petals ovate,
scarcely larger than the inner. Receptacle rather flat. Carpels 6-9,
one-ovuled; styles linear. Shrubs.--Species 1. Southern East Africa.
(Under _Unona_ L. f.) =Cleistochlamys= Oliv.
Sepals small, membranous. Outer petals oblong, larger than the
inner. Receptacle convex. Carpels usually 2-ovuled; stigmas usually
sessile.--Species 9. West Africa. (Under _Oxymitra_ Benth.)
=Cleistopholis= Pierre
26. Carpels united, at least in fruit, numerous. Petals much
overlapping in the bud. Flowers on dwarf shoots, with a thick stalk and
two large bracteoles enclosing the bud. Plants covered with stellate
hairs.--Species 2. Equatorial West Africa. =Pachypodanthium= Engl. &
Diels
Carpels free. 27
27. Stigmas lanceolate; margin not rolled inwards, or at the base
only. Carpels about 10. Sepals triangular. Petals lanceolate, united
at the base, greatly exceeding the calyx.--Species 1. East Africa.
(_Asteranthopsis_ O. Ktze., under _Uvaria_ L.) =Asteranthe= Engl. &
Diels
Stigmas truncate; margin rolled inwards all round. Petals usually
free.--Species 55. Tropical and South-east Africa. Some species yield
edible fruits, dyes, or medicaments. =Uvaria= L.
FAMILY 82. MYRISTICACEAE.
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