Rubiaceae

Pentodon Hochst.

First published in Flora 27: 552 (1844)

This genus is accepted

The native range of this genus is Africa, Arabian Pen.

Rubiaceae, B. Verdcourt. Flora of Tropical East Africa. 1976

Morphology General Habit: Glabrous subsucculent annual or short-lived perennial herbs with slender rootstocks
Morphology Leaves: Leaves paired, sessile, penninerved but lateral nerves obscure; stipules with the short sheath divided into (1–)2–5 narrow fimbriae
Morphology Reproductive morphology Flowers: Flowers small, hermaphrodite, dimorphic or not, in few–several-flowered very lax pedunculate terminal or apparently axillary (solitary at the nodes) inflorescences which appear to be verticillate, with 1–4 flowers from 1–4 widely spaced nodes
Morphology Reproductive morphology Flowers Calyx: Calyx-tube obconic or campanulate; lobes 5, equal, very narrowly triangular
Morphology Reproductive morphology Flowers Corolla: Corolla-tube narrowly funnel-shaped, throat hairy; lobes 5, ovate-triangular
Morphology Reproductive morphology Flowers Androecium Stamens: Stamens exserted in short-styled forms, included in long-styled and equal-styled forms
Morphology Reproductive morphology Flowers Gynoecium Pistil: Ovary 2-locular; placentas peltate with numerous ovules; style filiform, glabrous; stigma 2-lobed, the lobes filiform, included in short-styled forms, often exserted in equal-styled forms, exserted in long-styled forms
Morphology Reproductive morphology Fruits: Fruit capsular, campanulate or oblong, the beak only slightly raised, loculicidally dehiscent
Morphology Reproductive morphology Seeds: Seeds small, numerous, brown, angular.

[FTEA]

Rubiaceae, B. Verdcourt. Flora Zambesiaca 5:1. 1989

Morphology General Habit: Glabrous subsucculent annual or short-lived perennial herbs with a slender rootstock.
Morphology Leaves: Leaves paired, sessile, penninerved but lateral nerves obscure; stipules with the short sheath divided into (1 )2–5 narrow fimbriae.
Morphology Reproductive morphology Flowers: Flowers small, hermaphrodite, dimorphic or not, in few several-flowered very lax pedunculate terminal or apparently axillary (solitary at the nodes) inflorescences which appear to be verticillate, with 1–4 flowers from 1–4 widely spaced nodes.
Morphology Reproductive morphology Flowers Calyx: Calyx tube obconic or campanulate; lobes 5, equal, very narrowly triangular.
Morphology Reproductive morphology Flowers Corolla: Corolla tube narrowly funnel-shaped, throat hairy; lobes 5, ovate-triangular.
Morphology Reproductive morphology Flowers Androecium Stamens: Stamens exserted in short-styled forms, included in long-styled and equal-styled forms.
Morphology Reproductive morphology Flowers Gynoecium Pistil: Ovary 2-locular; placentas peltate with numerous ovules; style filiform, glabrous; stigma 2-lobed, the lobes filiform, included in short-styled forms, often exserted in equal-styled forms, exserted in long-styled forms.
Morphology Reproductive morphology Fruits: Fruit capsular, campanulate or oblong, the beak only slightly raised, loculicidally dehiscent Seeds small, numerous, brown, angular.

[FZ]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit: Annual or short-lived perennial glabrous herbs
Morphology Leaves: Leaves sessile; stipules sheathing, fimbriate
Morphology Reproductive morphology Inflorescences: Flowers sometimes heterostylous, in lax terminal or apparently axillary inflorescences
Morphology Reproductive morphology Flowers Calyx: Calyx-lobes 5
Morphology Reproductive morphology Flowers Corolla: Corolla-tube narrowly funnel-shaped, hairy at throat; lobes 5, valvate in bud
Morphology Reproductive morphology Flowers Gynoecium Ovary: Ovary 2-celled with numerous ovules on peltate placentas inserted near the middle of the septum; style with filiform stigma-lobes
Morphology Reproductive morphology Fruits: Capsule with slightly raised beak, loculicidally dehiscent
Morphology Reproductive morphology Seeds: Seeds angular.
Distribution: Genus of two species from Africa, Madagascar and Arabia.

[FSOM]

Flora Zambesiaca
- Flora Zambesiaca
- http://creativecommons.org/licenses/by-nc-sa/3.0
Flora of Somalia
- Flora of Somalia
- http://creativecommons.org/licenses/by-nc-sa/3.0
Flora of Tropical East Africa
- Flora of Tropical East Africa
- http://creativecommons.org/licenses/by-nc-sa/3.0
Herbarium Catalogue Specimens
- 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
Kew Backbone Distributions
- The International Plant Names Index and World Checklist of Vascular Plants 2026. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
- © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
Kew Names and Taxonomic Backbone
- The International Plant Names Index and World Checklist of Vascular Plants 2026. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
- © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

Descriptions