A Grammatical Dictionary of Botanical Latin

glaber, glabra, glabrum (adj.A): “glabrous, smooth, especially not pubescent nor hairy” (Fernald 1950); “destitute of hair, hairless, smooth; of various things lacking a usual or natural covering” (Glare); compar. glabrior,-ius (adj.B); superl. glaberrimus,-a,-um (adj.A); opp. pilosus,-a,-um (adj.A), ‘hairy,’ and other words denoting pubescence of various kinds; cf. laevis,-e (adj.B), without hair, beardless, smooth, not rough; see beardless; see smooth.

               singular                            plural
        m.       f.         n.            m.         f.        n.
Nom.  glaber   glabra    glabrum       glabri      glabrae   glabra 
Gen.  glabri glabrae     glabri      glabrorum   glabrarum  glabrorum  
Dat.  glabro   glabrae   glabro                   glabris 
Acc.  glabrum  glabram   glabrum      glabros     glabras    glabra 
Abl.  glabro   glabra    glabro                   glabris

NOTE: declined like pulcher, pulchra, pulchrum (adj.A), q.v., beautiful.

- pileus in statu juvenili tomentosus v. villosus, dein glaberrimus, the pileus in the young state tomentose or villous, ultimately very smooth.

- eorum apices obtusi, subtruncati, alii papilla prominente glabra coronati, alii poro rimulave conspicui (S&A), the apices of these obtuse, almost truncate, some crowned with a prominent smooth papilla, others conspicuous with a pore or small fissure.

- ostiola admodum rudia, superficialibus conspicua valiibus jugisque, sed glabra (A&S), the ostioles quite rough, conspicuous with surficial valleys and ridges but glabrous.

- carpellis compressis punctulatis superficie fere glabris, marginem exteriorem versus sparse ciliatis (Boissier), with the carpels compressed punctulate, on the surface almost smooth, toward the outer margin sparsely ciliate.

- carpellis elongatioribus pubescentibus margine glabris (Boissier), with the carpels more elongate, pubscent, on the margin smooth [i.e. hairless].

- tota planta glaberrima (Boissier), the whole plant very smooth.

- foliis pinnati-sectis subtus velutinis, superne glabris (DeCandolle), with the leaves pinnatisect, underneath velvety, on the upper surface glabrous.

- [Clematis glabra] foliis ternatim sectis, segmentis glaberrimis ovatis acuminatis, pedicellis glabris (DeCandolle), with the leaves ternately divided, with the segments very smooth, ovate acuminate, with the pedicels smooth.

- folia ovata, obtuse angulata, margine ciliata, superne glabra, interne pilosa, albescentia; nervis subtus ciliatis (Swartz), the leaves ovate, obtusely angulate, ciliate on the margin, above smooth, inwardly pilose, whitish, with the nerves below ciliate.

- foliis supra glabris, subtus tenuiter cinerascenti-velutinis (F. Mueller), with the leaves above hairless, below finely ashy-gray-velvety.

- foliolis lanceolatis supra glabris, subtus cum ramis et inflorescentia fusco-argenteis lepidotis (F. Mueller), with the leaflets lanceolate, above glabrous, below, together with the branches and inflorescence dark-silver lepidote [i.e. scaly].

- capsulis acuminatis glabris base stipitato-attenuatis intus dense sericeo-tomentosis (F. Mueller), with the capsules acuminate, hairless, at the base stalked-attenuate, inside densely silky-tomentose.

NOTE: glabrous also seems to have been used to indicate ‘smooth,’ i.e. without ridges or furrows.

“The common Receptacle, (receptaculum commune), is of wide circumference, and contains a multitude of flowers. It is of the following kinds: Smooth, (receptaculum glabrum), that is destitute of hairs or points (Willdenow); see receptacle.