A Grammatical Dictionary of Botanical Latin

rosaceus,-a,-um (adj.A): rosaceous, rose-like; “having the same arrangement as the petals of a single rose” (Lindley); “1. arranged like the five petals of a normal rose; 2. belonging to the order of which Rosa is the type; 3. rose-color, pink” (Jackson); (like the flower of a single rose (Rosa), i.e. with 5 outspread petals and many stamens; made of roses;

- Classis VI. De herbis & suffruticibus, flore rosaceo (Tourn.), Class VI. concerning herbs and subshrubs, with a rosaceous [i.e. rose-like] flower.

- morphologia colonialis in agaro juris vegetabilis "V-8" dicto stellata vel rosacea, colonial morphology in an agar of vegetable juice called "V-8" stellate or like the flowers of roses.

- Myosotis est plantae genus, flore rosaceo, plurimis scilicet petalis in orbem positis constante: ex cujus calyce surgit pistillum quod deinde abit in fructum cornu bovilli aemulum (Tourn.), Myosotis is a kind of plant, with a rosaceous flower [i.e. like a rose flower] that is, composed of very many petals arranged in a disc [i.e. flat and circular]: from the calyx of which arises the pistil which finally transforms into a fruit resembling a cow [or ox] horn.

- Florum simplicium polypetalorum differentiae a similitudine cum alis rebus vulgo cognitis sumi possunt: unde Cruciformes alios appellavi, alios Rosaceos, Caryophyllaeos, Liliaceos, Leguminosus seu Papilionaceos, caeteros vero Polypetalos anomalos (Tourn.), the distinctions [i.e. distinguishing states] of the simple polypetalous flowers are adopted from the similarity with other things commonly known; hence [I have called] some Cruciform [i.e. cross-shaped], others Rosaceous [i.e. like a Rose], Caryophyllaeous, Liliaceous, Leguminose or Papilionaceous.

- Flos Rosaceus ex pluribus aut paucioribus petalis quam quatuor componitur in orbem positis, quo plane modo petala florum Rosae disponuntur. Ut videre est in Ranunculo, Quinquefolio, Paeonia (Tourn.), the rosaceous flower is composed of either more or fewer petals than four, arranged in a disc [i.e. a circle], by which clear manner the petals of the flowers of Rosa are arranged. So it is seen in Ranunculus, Quinquefolius, Paeonia.

- florum simplicium polypetalorum differentiae a similitudine cum alis rebus vulgo cognitis sumi possunt (Tourn.), the distinctions [i.e. distinguishing states] of the simple polypetalous flowers are adopted from the similarity with other things commonly known.

- Alsinastrum est plantae genus, calyce monophyllo ab Alsine diversum: a Lychnide vero flore rosaceo (Tourn.), Alsinastrum is a kind of plant different from Alsine by the monophyllous [i.e. one-leaved] calyx: from Lychnis certainly by the rose-like flower.

Family Rosaceae. Russula rosacea (fungus).