Origin and Habitat: Namaqualand to Little Karoo.
Habitat: Grows on rocky ridges.

• Tylecodon wallichii (Harv.) Toelken
• Cotyledon wallichii Harv.
• Tylecodon papillaris subs. wallichii (Harv.) G.D.Rowley

• Tylecodon wallichii (Harv.) Toelken
• Cotyledon wallichii Harv.
• Tylecodon papillaris subs. wallichii (Harv.) G.D.Rowley

• Tylecodon wallichii subs. ecklonianus (Harv.) Toelken
• Cotyledon eckloniana Harv.

Description: It is a sparingly branched shrublet with a thick, knobby, tuberculate stem and succulent leaves crowded at the branch tips.
Stem: Woody, warty up to 50(-100) cm tall, main stem up to 6 cm in diameter, younger branches greenish approx 1,5 cm in diameter densely covered with urn-shaped, greenish-yellow phyllopodia 15 x 3 x 2 mm long with an acute oblique tip.
Leaves: Narrow, thin, paddle-shaped, tapperig toward the apex, yellowish green with a reddish mucro. appearing in winter and dying off in summer (absent at flowering) dropping off cleanly.
Seeds: Extremely small, weighting about 0,03 mg. These small seeds (also known as dust diaspores) can be blown about like dust particles without any special devices for buoyancy. In this species, enormous numbers of seeds are produced at the cost of fewer, larger sized seeds. Because this plant occur abundantly in the arid areas and has specific habitat requirements, the production of increased numbers of seeds is essential to enhance the probability that at least some seeds will reach a favourable germination site. Except for their small size, these diaspores generally lack other appendages to further promote dispersal by wind. Several genera of the Crassulaceae, e.g. Crassula, Tylecodon and Cotyledon, occurring in the arid areas of southern Africa have very tiny dust-like seeds. The production of numerous dust-like seeds by desert species serves as an escape strategy to prevent mass consumption of seeds. These tiny seeds are carried by the wind to cracks and furrows in the soil and are then covered with fine soil particles.

Notes: The leaves of Tylecodon wallichiiSN|17349]]SN|17349]] are highly poisonous if ingested.

Bibliography: Major references and further lectures
1) James Cullen, Sabina G. Knees, H. Suzanne Cubey “The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass” Cambridge University Press, 11/Aug/2011
2) Botanical Research Institute, Department of Agricultural Technical Services, Republic of South Africa. “The Flowering Plants of Africa” Volumes 50-51, 1988
3) Hermann Jacobsen “A Handbook of Succulent Plants: Ficus to Zygophyllum” volume 2 Blandford Press, 1960
4) Jacobsen “Lexicon of succulent plants” 1974
5) Werner Rauh “The Wonderful World of Succulents: Cultivation and Description of Selected Succulent Plants Other Than Cacti” Smithsonian Institution Press, 1984
6) Gordon Rowley “Caudiciform and Pachycaul Succulents: Pachycauls, Bottle-,Barrel-And Elephant-Trees and Their Kin a Collector's Miscellany” Strawberry Press. June 1st 1987
7) Ernst Jacobus van Jaarsveld, Daryl Lee Koutnik “Cotyledon and Tylecodon” Umdaus Press, 2004
8) Doreen Court “Succulent Flora of Southern Africa” CRC Press, 01/June/2000
9) Karen van Rheede van Oudtshoorn, Margaretha W. van Rooyen “Dispersal Biology of Desert Plants” Springer Science & Business Media, 09 March 2013

Cultivation and Propagation: Although usually grown only by specialist caudiform grower it presents no great difficulty in cultivation. It is a winter grower, dormant in the summer.
Growing rate: This is a very slow growing species.
Soil: Tylecodon wallichiiSN|17349]]SN|17349]], like all other caudiciforms, requires very well-drained soils. Out-of-Doors prefers sandy soil, sandy loam soil provided the drainage is good. In pot it needs an open medium comprising equal parts of well decomposed compost or finely milled bark, and river or silica sand (or pumice) or a well drained, cactus compost.
Repotting: Re pot every 2/3 years using the above compost with added slow release fertilizer, but fully grown plants can remain in the same position for many years. Plant it with the neck at soil level and grow it in pots with a diameter of at least 25 cm. Give it excellent drainage.
Fertilization: Because they are adapted to poor soil, feeding is not really necessary, but some ash will not do them any harm. On pots fertilize moderately during the growing season with diluted high potassium fertilizer.
Exposure: It is most suitably grown in full exposed areas but it will even grow and bloom in half-sun.
Watering: As it is a deciduous winter-growing plant, it likes moisture from late summer to early spring, and withhold water from late spring to summer (dormancy period). In the growing season water when the roots are almost dry, and reduce watering in winter to once every two weeks.
Hardiness: Winter minimum temperature is 5ºC but better at 8ºC. The leaves easily drop off in cool conditions.
Garden uses: The plants are mostly grown by specialist caudiciform collectors, usually as container subjects.
Warning: The plant is poisonous to stock, causing stomach cramps.
Pest and diseases: It is susceptible to attack by mealy bugs.
Propagation: From seed. Seeds form readily and should be harvested and sown as soon as they can be easily removed from the capsules. The seeds germinate without difficulty. Seeds may take up to two months before the first leaf appears above ground, and a further 10 to 20 years to reach maturity. If it is the intention to plant these seedlings out into a bag or pot, they can be transplanted in their second or third year. Once planted in a permanent position do not dug-up and moved them constantly from one location to the next. A word of caution - do not plant the swollen stems too deep. Ensure the slender neck of the plant is just protruding above the soil with only the root underground. It can also be propagated from cuttings in late Autumn.