Botanical Photo and Knowledge Archive

Articles

Observations from cultivation and habitats, plant anatomy, floral biology and species profiles. Each entry leads to a complete individual article page.

Biology & anatomy

Floral structure of asclepiads

Morphology and pollination apparatus

Gynostegium, corona, pollinaria and guide rails are explained using our own preparations and flower photographs.

11. Info-Brief der IG Ascleps, 2003
Friederike Hübner & Ulrich Tränkle

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Biology & anatomy

Hand pollination of Asclepiadaceae

Possibilities and problems

Practical experience from 83 pollination trials in eight genera – from readily accessible Huernia flowers to difficult Ceropegia.

10. Info-Brief der IG Ascleps, 2003
Friederike Hübner

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Biology & anatomy

Stem anatomy in Ceropegia

Ceropegia linearis subsp. woodii

Stem cross-sections explain why the long, slender shoots of Ceropegia woodii have surprising tensile strength.

9. Info-Brief der IG Ascleps, 2002
Friederike Hübner

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Habitat & cultivation

Aloe asperifolia

Observations near Swakopmund and in cultivation

Habitat ecology of a rough-leaved Aloe in the central Namib: dolerite, coastal fog, microhabitats and long-term cultivation observations.

AVONIA 20:3, 2002
Friederike Hübner & Ulrich Tränkle

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Species profiles

Hoodia flava

(N. E. Brown) Plowes

A relatively compact Hoodia with yellowish to brownish flowers, a wide distribution in southern Africa and reliable flowering in cultivation.

Kakteen und andere Sukkulenten (KUAS), 2003
Ulrich Tränkle & Friederike Hübner

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Species profiles

Hoodia juttae

Dinter

A distinctive species of the Karas Mountains with large flesh-coloured to reddish-brown flowers and a strong tendency to flower.

Kakteen und andere Sukkulenten (KUAS), 2003
Ulrich Tränkle & Friederike Hübner

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Species profiles

Hoodia officinalis subsp. officinalis

(N. E. Brown) Plowes

A rare Hoodia with small flowers; the article covers morphology, cultivation, propagation and the subspecies delaetiana.

Kakteen und andere Sukkulenten (KUAS) 54(7), 2003
Ulrich Tränkle & Friederike Hübner

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Species profiles

Hoodia pedicellata

(Schinz) Plowes

A species of the Namib coastal fog zone with small purplish-brown flowers, habitat photographs from Rössingberg and cultivation notes.

Kakteen und andere Sukkulenten (KUAS) 54(1), 2003
Ulrich Tränkle & Friederike Hübner

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