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Repert. Pl. Succ. (I.O.S.) Notes: A. boehmianum
Family: APOCYNACEAE
Synonyms:
- Adenium obesum subs. boehmianum (Schinz) G.D.Rowley
- Adenium boehmianum Schinz
Adenium obesum subs. boehmianum (Schinz) G.D.Rowley
Repert. Pl. Succ. (I.O.S.)
Synonymy: 2
- Adenium obesum subs. boehmianum (Schinz) G.D.Rowley
- Adenium boehmianum Schinz
Adenium obesum Roem. & Schult.
Syst. Veg., ed. 15 bis [Roemer & Schultes] 4: 411. 1819
Synonymy: 19
- Adenium obesum Roem. & Schult.
- Cameraria obesa Spreng.
- Nerium obesum Forssk.
- Pachypodium obesum A.DC.
- Adenium arabicum Balf.f.
- Adenium arboreum Ehrenb.
- Adenium coetaneum Stapf
- Adenium dhofarense Rzepecky
- Adenium honghel A.DC.
- Adenium honghel Lindl.
- Adenium obesum subs. socotranum (Vierh.) Lavranos
- Adenium socotranum Vierh.
- Adenium obesum subs. socotranum f. cristata hort.
- Adenium obesum subs. somalense (Balf.f.) G.D.Rowley
- Adenium somalense Balf.f.
- Adenium somalense var. caudatipetalum Chiov.
- Adenium somalense var. crispum Chiov.
- Adenium tricholepis Chiov.
Adenium obesum f. albiflorum Lodé
Fichier Encycl. Cact. Autres Succ. Ser. 15: no. 1394 (1995), without latin descr. or type;.
Synonymy: 2
- Adenium obesum f. albiflorum Lodé
- Adenium speciosum Fenzl
Adenium obesum hybrid hort.
Accepted name in llifle Database:
Adenium obesum subs. oleifolium (Stapf) G.D.Rowley
Repert. Pl. Succ. (I.O.S.) 29: 3 (1978 publ. 1980).
Synonymy: 5
- Adenium obesum subs. oleifolium (Stapf) G.D.Rowley
- Adenium oleifolium Stapf
- Adenium lugardiae N.E.Br.
- Adenium oleifolium var. angustifolium Phillips
- Adenium somalense var. angustifolium (Phil.) G.D.Rowley
Adenium obesum subs. swazicum (Stapf) G.D.Rowley
Repert. Pl. Succ. (I.O.S.)
Synonymy: 3
- Adenium obesum subs. swazicum (Stapf) G.D.Rowley
- Adenium boehmianum var. swazicum (Stapf) G.D.Rowley
- Adenium swazicum Stapf
Description: Adenium bohemianus is a small peculiar species with silvery branching caudex. The flowers are similar to those of A. swazicum but the leaves are broader pale grayish-green. It is a slow grower adenium and need a long periods of dormancy.
It has relatively poor flowering characteristics compared to the more floriferous A. obesum hybrid, but the flowers are anyway beautiful like those of most of the adeniums and range from light-pink to dark magenta pink colour.
A. bohemianum (and A. swazicum too) almost always drop every leaf during the dormancy period. When leaf tips get brown, it usually means that the plant is getting too dry between waterings but if they are doing it and the plant is wet, cut back a little.
Subspecies, varieties, forms and cultivars of plants belonging to the Adenium obesum group
- Adenium arabicum Balf.f.: is similar in appearance to Adenium obesum, but creates a massive, more squat and fat caudex and has larger thick fleshy leaves. Distribution: Yemen and Saudi Arabia.
- Adenium dhofarense Rzepecky: Has large, leathery and glossy leaves and very small flowers. Distribution: Dhofar coast (Oman) and adjacent mountains of Yemen.
- Adenium obesum Roem. & Schult.: The trunk will get up to one meter in diameter, and the plant will grow op to five meters.
- Adenium obesum f. albiflorum Lodé
- Adenium obesum subs. boehmianum (Schinz) G.D.Rowley: The flowers are similar to those of A. swazicum but the leaves are broader pale grayish-green.
- Adenium obesum subs. oleifolium (Stapf) G.D.Rowley: succulent shrublet 12-40 cm high from a subterranean rootstock. It has long, narrow leaves frequently folded along the midrib. Distribution: Botswana, Namibia and S. Africa.
- Adenium obesum subs. socotranum (Vierh.) Lavranos: It is the giant of the genus, forming a massive conical trunk/caudex several metres tall and up to 2.4 m in diameter. It resembles a miniature baobab.
- Adenium obesum subs. socotranum f. cristata hort.: crested form.
- Adenium obesum subs. somalense (Balf.f.) G.D.Rowley
- Adenium obesum subs. swazicum (Stapf) G.D.Rowley: It is a dwarf shrub, up to 30 cm high, with an enlarged succulent stem with few branches. The caudex is evident only in young specimens.
- Adenium somalense var. crispum Chiov.: is a dwarf form of A. somalense (less than 30 cm tall) with white flowers heavily striped with red or completely red and a large underground napiform caudex. Distribution: Coast of southern Somalia.
Adenium obesum subs. boehmianum Photo by: Valentino Vallicelli
Adenium obesum subs. boehmianum Photo by: Cactus Art
Cultivation and Propagation: A. bohemianus is easy to grow but is especially susceptible to spider mite infestation. It is nearly evergreen if grown in a warm greenhouse or tropical conditions a and watered, but can loose its leaves and forced into a long winter dormancy in cooler climate. New growth begins early in spring.
It like pots with generous drain holes on sides and bottom, need a very porous potting medium media (add pumice, vulcanite, and perlite) seeing that the main trunk is planted with the majority of the roots below the caudex line. Its rare that adeniums will use the upper third of their soil and often this area serves like a mulch or support for the stem.
To make plants develop a large swollen base/trunk and to increase flowering, they require a fertilizer rich in potassium and phosphorus without a too high nitrogen content.
Bright filtered light is best but in areas where light is not as burning, plants may be kept outdoors in full sun unprotected but remember that caudex is very susceptible to sun scalding.
Water plants preferably in the early mornings until the soil is well wetted and let excess water drains from the pot base. Watering can be done as they become drier even daily or to every few days during active growth season Never allow plants to dry out too often as this causes them to go into early dormancy. Many plants simply never get enough water to grow and flower adequately so keep them active and growing by providing them with all the essential necessities.
Reproduction: Seed, grafting or cuttings that develop the same characteristics in a few years.
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