Astrophytum myriostigma Lemaire, Ch.
key to the varieties
key to the varieties
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Section Austrastrophytum
fruits splitting starlike on top |
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-plants wanting spines
-flower pure yellow -hypocotyl of the seedling slender and reddish -plants with 4 to 5 ribs, adult up to 11 ribs |
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epidermis covered with white tufts of wool:
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| -flower diameter large, average 63 max. 76 mm -no essential flower fragrance -fruit with many seeds, average 81 max. 162 seeds -shape of growth broad, solid |
myriostigma (type) |
| -flower diameter average 47 max. 60 mm -no essential flower fragrance -seed count of fruit average 54 max. 136 seeds -shape of growth broad, columnar |
subsp. tamaulipense |
| -flower diameter small, average 38 max. 50 mm -flower with intensive fragrance (lemon?) -low seed count of fruit, average 53 max. 113 seeds -shape of growth columnar already in the youth -already in the youth with more than 5 ribs |
subsp. tulense |
| epidermis without or nearly without white tufts of wool: | v. nudum |
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not valid varieties:
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-short flowers max. 25 mm -columnar growth already in the youth -also adult plants with 5 ribs the variety is not valid because there exists no reproductive population in nature 1) |
v. columnare |
| -independent of age always with 4 ribs the variety is not valid because there exists no reproductive population in nature 1) |
v. quadricostatum |
| Gattung / genus Astrophytum |
| Astrophytum asterias |
| Astrophytum capricorne |
| Astrophytum coahuilense |
| Astrophytum myriostigma |
| Astrophytum ornatum |
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collection Heinz Hoock
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