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PIPTOSTIGMA Oliv. [family ANNONACEAE]
Date Updated: 19 August 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical Africa, Vol 1, page 13, (1868) Author: (by Prof. Oliver).
Names
PIPTOSTIGMA Oliv. [family ANNONACEAE], in Journ. Linn. Soc. viii. 158.
Information
Flowers hermaphrodite. Sepals 3, ovate or lanceolate, acute, free. Petals 6, free, in two series, valvate in æstivation; outer petals sepaloid, but slightly exceeding the sepals; inner petals much longer than the outer, rather thin, plane or the margins reflexed; the base concave, surrounding the genitalia. Stamens indefinite, closely imbricate upon a hemispherical torus; anthers sessile, cuneate-oblong, extrorse, the connective truncate, transversely rhomboidal. Carpels 4–6, united at the apex in a sessile, depressed-globose, obscurely-lobed, pilose, deciduous stigma; ovules 6–10, in 1 or 2 series upon the ventral suture. Fruit not seen (said to consist in one species of united carpels). Trees, with subsessile leaves, with numerous secondary nerves and obscure transversely parallel venation, and simple or panicled cymose racemes, from wood of a previous year.
Range
The two following species are all that are known of this genus, which is confined to West Tropical Africa.
Date Updated: 19 August 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical Africa, Vol 1, page 13, (1868) Author: (by Prof. Oliver).
Names
PIPTOSTIGMA Oliv. [family ANNONACEAE], in Journ. Linn. Soc. viii. 158.
Information
Flowers hermaphrodite. Sepals 3, ovate or lanceolate, acute, free. Petals 6, free, in two series, valvate in æstivation; outer petals sepaloid, but slightly exceeding the sepals; inner petals much longer than the outer, rather thin, plane or the margins reflexed; the base concave, surrounding the genitalia. Stamens indefinite, closely imbricate upon a hemispherical torus; anthers sessile, cuneate-oblong, extrorse, the connective truncate, transversely rhomboidal. Carpels 4–6, united at the apex in a sessile, depressed-globose, obscurely-lobed, pilose, deciduous stigma; ovules 6–10, in 1 or 2 series upon the ventral suture. Fruit not seen (said to consist in one species of united carpels). Trees, with subsessile leaves, with numerous secondary nerves and obscure transversely parallel venation, and simple or panicled cymose racemes, from wood of a previous year.
Range
The two following species are all that are known of this genus, which is confined to West Tropical Africa.
Date Updated: 19 August 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical Africa, Vol 1, page 13, (1868) Author: (by Prof. Oliver).
Names
PIPTOSTIGMA Oliv. [family ANNONACEAE], in Journ. Linn. Soc. viii. 158.
Information
Flowers hermaphrodite. Sepals 3, ovate or lanceolate, acute, free. Petals 6, free, in two series, valvate in æstivation; outer petals sepaloid, but slightly exceeding the sepals; inner petals much longer than the outer, rather thin, plane or the margins reflexed; the base concave, surrounding the genitalia. Stamens indefinite, closely imbricate upon a hemispherical torus; anthers sessile, cuneate-oblong, extrorse, the connective truncate, transversely rhomboidal. Carpels 4–6, united at the apex in a sessile, depressed-globose, obscurely-lobed, pilose, deciduous stigma; ovules 6–10, in 1 or 2 series upon the ventral suture. Fruit not seen (said to consist in one species of united carpels). Trees, with subsessile leaves, with numerous secondary nerves and obscure transversely parallel venation, and simple or panicled cymose racemes, from wood of a previous year.
Range
The two following species are all that are known of this genus, which is confined to West Tropical Africa.
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