It's a good example, Marco, especially considering how difficult it is to find parallels to the VMS plants.
The VMS drawing could be a reference to the same plant (there certainly are similarities), or it could be meant as a similar mnemonic (e.g., a different plant with a similar name, or similar morphological or medicinal properties).
One of the plants called Oculis Christi is Clary sage (Salvia verbenaca). It has opposite leaves and spiked violet-colored flowers (not puffs). The leaves are somewhat elliptical (not thin) and quite scalloped, and it has a tap root. I think the name comes from the way the seeds look when they ripen (little black dots inside a brownish tube).
Clary sage doesn't appear to match well to the VMS plant or the example you posted, but...
...there is another Oculis Christi called Sweet William (there are several species called Sweet William, You are not allowed to view links. Register or Login to view. is one of them). It comes in many colors and some of them have a reddish ring around the inner part of the flower that makes it look like an eye. The garden versions have huge flower heads, but the wild ones have more modest puffs of flowers. It has You are not allowed to view links. Register or Login to view. evenly spaced up the stem. It's actually a pretty good match for your example and for the VMS plant except that the flowers aren't as poofy as the drawings. Still... it matches in most other respects.
You are not allowed to view links. Register or Login to view. also has some features in common with the VMS plant (e.g., narrow opposite leaves) but it doesn't go by the name Oculis Christi, as far as I know.
The VMS drawing could be a reference to the same plant (there certainly are similarities), or it could be meant as a similar mnemonic (e.g., a different plant with a similar name, or similar morphological or medicinal properties).
One of the plants called Oculis Christi is Clary sage (Salvia verbenaca). It has opposite leaves and spiked violet-colored flowers (not puffs). The leaves are somewhat elliptical (not thin) and quite scalloped, and it has a tap root. I think the name comes from the way the seeds look when they ripen (little black dots inside a brownish tube).
Clary sage doesn't appear to match well to the VMS plant or the example you posted, but...
...there is another Oculis Christi called Sweet William (there are several species called Sweet William, You are not allowed to view links. Register or Login to view. is one of them). It comes in many colors and some of them have a reddish ring around the inner part of the flower that makes it look like an eye. The garden versions have huge flower heads, but the wild ones have more modest puffs of flowers. It has You are not allowed to view links. Register or Login to view. evenly spaced up the stem. It's actually a pretty good match for your example and for the VMS plant except that the flowers aren't as poofy as the drawings. Still... it matches in most other respects.
You are not allowed to view links. Register or Login to view. also has some features in common with the VMS plant (e.g., narrow opposite leaves) but it doesn't go by the name Oculis Christi, as far as I know.
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