Echinocactus platyacanthus Link & Otto, Verh. Vereins Beförd. Gartenbaues Königl. Preuss. Staaten 3: 423 1827. (Syn: Copiapoa macracantha (Salm-Dyck) Meregalli [Invalid]; Echinocactus arachnoideus Scheidw.; Echinocactus aulacogonus Lem. .; Echinocactus edulis Haage ex C.F.Först. [Invalid]; Echinocactus ghiesbreghtianus Lem.; Echinocactus grandis Rose ..; Echinocactus helophorus Lem. ..; Echinocactus ingens Zucc. ex Pfeiff. ………..; Echinocactus irroratus Scheidw.; Echinocactus karwinskii Zucc. ex Pfeiff.; Echinocactus macracanthus de Vriese; Echinocactus macracanthus Salm-Dyck; Echinocactus minax Lem. .; Echinocactus oligacanthus Mart. ex Pfeiff.; Echinocactus palmeri Rose ; Echinocactus platyacanthus f. grandis (Rose) Bravo; Echinocactus platyacanthus var. palmeri (Rose) H.P.Kelsey & Dayton; Echinocactus platyacanthus f. visnaga (Hook.) Bravo; Echinocactus platyceras Lem. ..; Echinocactus saltillensis Poselg.; Echinocactus saltillensis Poselger; Echinocactus tuberculatus Link & Otto .; Echinocactus viznaga Hook.; Echinofossulocactus helophorus (Lem.) Lawr. .; Echinofossulocactus karwinskianus Lawr.; Echinofossulocactus macracanthus (Salm-Dyck) Lawr.; Echinofossulocactus platyceras (Lem.) Lawr.);

Echinocactus platyacanthus, also known as the giant barrel cactus, giant viznaga, or biznaga de dulce,[2] is a species of cactus (family Cactaceae). It is native to central Mexico in the Chihuahuan Desert.[1]

This species is the largest barrel cacti. Their hairs are often used for weaving in Mexico and used to produce a traditional candy by boiling the pith.
This slow-growing species can reach sizes to 2.5 metres (8.2 ft) tall to 1.5 metres (4.9 ft) wide and can live over a hundred years. Their stems are a gray-ish blue color and the straight, rigid spines are black. The apex of the cactus is flat and covered with a yellow felt-like substance. They’re heavily ribbed and have large areoles. Their diurnal, tubular flowers bloom at the end of spring to summer and are a vivid yellow color, they grow about 2 centimetres (0.79 in) in height and 3 centimetres (1.2 in) broad.[3] The fruit is about 3 centimetres (1.2 in) long and is covered by a hairy wool.[4]
(From Wikipedia on 22.3.14)

Duars : cactus09 : 07March14 : Echinocactus grusonii? : 4 posts by 2 authors. Attachments (1).
Is it Echinocactus grusonii Hildm?
I have only one picture.

The body form is right for E. grusonii but the spines are not right. The new spines should be longer and more yellow. Of course these could by a hybrid of some sort. I know E. grusonii has a spineless form and a white spine form. Perhaps these are Echinocactus platyacanthus. You don’t see it as often as E. grusonii but it has a similar form.

Echinocactus yes …,
But not grusonii, these look to be E. platyacanthus, a much larger growing Echinocactus.

Yup, platyacanthus, with somewhat shorter spines?

E. platyacanthus

Thanks to all for all this information on various cacti species, in different threads. It helps a lot to enhance my otherwise zero concept on cactus.


Echinocactus platyacanthus from Platae Paradise, Datyar, Himachal Pradesh-GS17012022-3: 3 high res. images.
Echinocactus platyacanthus Link & Otto 

Syn: Echinocactus ingens Zucc. ex Pfeiff.
Photographed from Platae Paradise, Datyar, Himachal Pradesh, 29-5-2015.




POWO  The Plant List Ver.1.1  

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