Gymnocalycium hossei

(F. A. Haage) A. Berger 1929

2013, Argentina, La Rioja

Surveys

2006, Argentina, La Rioja, Chilecito, A&M 65 Show on map

01-FP 376

2013, Argentina, La Rioja, north east of Anillaco, A&M 893 Show on map

02-1210348

03-1210344

04-1210342

05-1210359

06-1210357

07-1210354

08-1210368

09-1210364

10-1210370

11-1210376

12-1210378

13-1210385

14-1210382

15-1210392

16-1210394

17-1210398

18-1210407

19-1210406

20-1210408

21-1210420

22-1210413

23-1210412

2013, Argentina, La Rioja, west of Señor de la Peña, A&M 896 Show on map

24-1210438

25-1210441

26-1210481

27-1210442

28-1210451

29-1210447

30-1210450

31-1210456

32-1210457

33-1210464

34-1210466

35-1210469

36-1210471

2013, Argentina, La Rioja, between El Señor de la Peña and Ruta 7, A&M 899 Show on map

37-1210512

38-1210513

39-1210517

40-1210508

41-1210520

42-1210522

43-1210525

44-1210526

45-1210530

46-1210531

2013, Argentina, La Rioja, Chilecito, A&M 919 Show on map

47-1220632

48-1220633

49-1220637

50-1220673

51-1220656

52-1220649

53-1220658

54-1220665

55-1220675

56-1220677

57-1220683

58-1220696

59-1220694

60-1220697

61-1220701

62-1220706

63-1220709

64-1220710

65-1220712

66-1220726

67-1220734

68-1220733

69-1220736

70-1220739

71-1220740

72-1220749

73-1220753

74-1220754

75-1220755

76-1220758

77-1220760

78-1220762

79-1220763

80-1220764

81-1220769

82-1220765

83-1220771

2013, Argentina, La Rioja, Carrizal, A&M 922 Show on map

84-1220829

85-1220830

86-1220786

87-1220787

88-1220826

89-1220827

Synonyms

Echinocactus hossei*, Gymnocalycium acorrugatum, Gymnocalycium coloradense, Gymnocalycium guanchinense, Gymnocalycium mazanense, Echinocactus mazanensis, Gymnocalycium nidulans, Gymnocalycium rhodantherum, Echinocactus rhodantherus, Gymnocalycium weissianum
* Basionym

Distribution

Argentina (Catamarca, La Rioja, San Juan)

Conservation status

(4) Least Concern, LC

Comments

In the words that follow, Charles (2009,159) underlined the close relationship between Gymnocalycium rhodantherum (Boedeker) Backeberg and Gymnocalycium hossei (F. A. Haage) A. Berger: "If one wants to take a wider concept of a species then it would be sensible to include Gymnocalycium rhodantherum as a synonym of G. hossei which would extend its distribution further west to include the Sierra de Famatina". Indeed, in habitat there is no specimen of the first taxon that does not show a clear relationship with the morphological range of the second, the semaphoronts (Hennig 1966, 6-7, 32-33, 63, 65-67), of the two taxa are practically superimposable, and it is incredible that the passion for names still leads many enthusiasts to keep the two taxa separate. In support of the above, particularly compare the semaphoronts of the following list:

A&M 919, (G. rhodantherum), Argentina, La Rioja, Chilecito, east of Chilecito, 1130m, (photo 57), with A&M 896, G. hossei, Argentina, La Rioja, Señor de la Peña, west of Señor de la Peña, 865 m, (photos 28-30);

A&M 919, (G. rhodantherum), Argentina, La Rioja, Chilecito, east of Chilecito, 1130m, (photo 63), with A&M 893, G. hossei, Argentina, La Rioja, north-east of Anillaco, 1032 m, (photo 14);

A&M 919, (G. rhodantherum), Argentina, La Rioja, Chilecito, east of Chilecito, 1130m, (photos 74-75), with A&M 899, G. hossei, Argentina, La Rioja, between Señor de la Peña and Ruta 7, 900 m, (photo 40);

A&M 919, (G. rhodantherum), Argentina, La Rioja, Chilecito, east of Chilecito, 1130m, (photo 82), with A&M 899, G. hossei, Argentina, La Rioja, between Señor de la Peña and Ruta 7, 900 m, (photo 43).

And more generally compare the populations of ours A&M 919 and A&M 922 (G. rhodantherum), with the A&M 893, A&M 896 and A&M 899, G. hossei.

On the basis of what has been highlighted it is correct to assimilate G. rhodantherum to the synonyms of G. hossei. (Quoted from Anceschi & Magli 2021, 68-69)

Genus

Gymnocalycium

Other species

alboareolatum
andreae
anisitsii
baldianum
bayrianum
bodenbenderianum
borthii
bruchii
buenekeri
calochlorum
capillaense
cardenasianum
castellanosii
chiquitanum
denudatum
eurypleurum
ferrarii
fischeri
glaucum
horridispinum
horstii
hossei
kieslingii
marsoneri
megatae
mesopotamicum
mihanovichii
monvillei
mostii
nigriareolatum
oenanthemum
paediophilum
paraguayense
pflanzii
reductum
ritterianum
robustum
saglionis
schickendantzii
schroederianum
spegazzinii
stellatum
stenopleurum
uebelmannianum
uruguayense