[Trinity] Plant identification in Trinity College MS O.2.48 Apuleii Herbarium

[-JKP-]

MarcoP I have looked at the Common-Greek-Hebrew part of the manuscript and here are some names that seem to more or less make sense with the description of the plants (much less so with the illustrations):

You are not allowed to view links. Register or Login to view. Yeramios

I think this might be You are not allowed to view links. Register or Login to view.. It has red flowers and a fancy pistil (similar to Nigella) with palmate leaves. Also, the name would fit (I realized the name was a good match after I found a possible identity for the plant). If you Latinize "Yeramios" to Yeramium, it sounds like Geranium.

MarcoP: 185v bottom Dabelion
(the description is partly unreadable)
foliis similibus cameleonte agresti. ... stipitem crocesas rotundis ... flore facit
leaves similar to Dipsacus, round yellow [flowers?]
The name suggests Dandelion "Dent de lion" Taraxacum, but the illustration shows a bulbous root, so it could be some other plant with the same name, 
e.g. Leontodon bulbosus

This might be You are not allowed to view links. Register or Login to view. (Marsh fleawort)
It has roundish yellow flowers with short rays, a cluster at the top, and some coming from the leaf nodes down the stem. The leaves are like Dipsacus, elliptical and somewhat toothed, and it has a round bulb. So the shape of the plant is a good match but I haven't been able to reconcile the name.

MarcoP:
You are not allowed to view links. Register or Login to view. Jacintus
unam stipem rectam habens rub[eam] cum florem unum celestem in summo
a single straight red stem with a blue flower on the top
It could be the obvious You are not allowed to view links. Register or Login to view.

You're right about the name being hyacinth (west-European hyacinth), but the plant doesn't match hyacinth at all. Hyacinth flowers are round or bell-shaped and often droop, and hyacinths always have a spike of flowers, and the leaves are always narrow and coming from the base. I'm scratching my head over the name.

From the drawing, one might guess periwinkle or  Veronica, except that the text makes a point of saying it's a single straight stem, which immediately eliminates both periwinkle and Veronica (which are viny plants with multiple curved stems) unless it's Veronica fruticans which is a little more upright than the other Veronicas and has red stems.

Some of the gentians have red stems, but the leaves don't look like this.

With the round bulb and a name like Jacintus, one might think it was one of the blue-flowered squills (a kind of onion), but the leaves are completely wrong.

The Tibetan blue poppy has a straight stalk, blue flowers with wide petals at the top, and some of the leaves are odd pinnate (near the bottom, the others are lanceolate). It has a clumpy root. But the stalk is not typically red. But...

...it could be You are not allowed to view links. Register or Login to view.. It matches reasonably well and some of them have red stalks. Polemonium has odd-pinnate leaves and blue flowers with broad petals, but Polemonium usually has three or four flowers at the top, so it depends on whether the illustrator simplified it to one flower to keep it uncluttered. It's mostly a North American plant, but there are species that grow in cooler areas in Europe, but... it usually has a tap root, so I'm not completely sure the Trinity plant is Polemonium, but it's the closest one I can find so far.