A Grammatical Dictionary of Botanical Latin

orbicular, “perfectly circular, as the leaf of Cotyledon orbiculare” (Lindley); “of a flat body with a circular outline” (Jackson); = discoidalis,-e (adj.B), discoideus,-a,-um (adj.A), disciformis,-e (adj.B); resembling or having the form of an orb or circle, circular, having a rounded body; encircling a part or opening, as an orbicular ligament; “circular” (Fernald 1950); also globular, globose, spherical: orbicularis,-e (adj.B); see globularis,-e (adj.B); see orbis,-is (s.m.III);

- pileus in ambitu orbicularis, the pileus orbicular [i.e. circular] in circumference.

- foliis pinnatisectis, segmenris glabris integris trilobisve, orbicularis ovalibus oblongis sublinearibnsve (DeCandolle), with the leaves pinnatisect, with the segments glabrous, entire or three lobed, orbicular, oval, oblong or nearly linear.

- stigma vertice depressima, margine obtusangulum v. suborbiculare (B&H), the stigma at the apex very much depressed, with the margin at an obtusangle or nearly circular.

- (algae) [CONFERVA MUCOROIDES] caespite plano minuto orbiculari nigrescente (Agardh), clump flat, minute, orbicular blackish.

- (algae) caespes planus, lineam vel parum ultra latus, orbicularis (Agardh), clump flat, a line or somewhat beyond that wide, orbicular.

- (algae) fronde carnosa compresso-plana orbiculari (Agardh), with the frond compressed-flat, circular.

- ex habitu speciei prioris sed foliis obovato-orbicularibus apiculatis (Mueller), according to the habit of the previous species but with the leaves obovate [i.e.with the broader part at the apex rather than the base]-orbicular [i.e. circular], apiculate.

- folia orbiculari-spathulata cellulis pellucidis (Mueller), the leaves orbicular-spathulate, with pellucid cells.

- planta robustior foliis latissimis suborbicularibus (Mueller), a more vigorous plant with very wide leaves nearly orbicular [i.e. circular].

- folium ovato-cordatum orbiculare v. reniforme (B&H), the leafs ovate-cordate, circular or reniform [i.e. kidney-shaped].

- apiculo in lobos 2 crassos semiorbiculares diviso (B&H), with the apiculus divided into 2 thick, half-circular lobes.

- discum formans saepissime 5-gonum rarius orbicularem, nunc planum nisi medio apiculo v. umbone instructum (B&H), forming a disc most oftenly 5-angled more rarely circular, sometimes flat except provided in the middle with an apiculus or umbo.

half-circular, semi-circular: semicircularis,-e (adj.B);

- apiculo in lobos 2 crassos semiorbiculares diviso (B&H), with the apiculus divided into 2 thick, half-circular lobes.

- coronae squamae 10, crassiusculae, 5 ad basin tubi staminei antheris oppositas semiorbiculares patentes (B&H), the scales of the corona 10, a little thick, the five at the base of the stamineal tube opposite the anthers, half-circular, spreading.

NOTE: WIII indicates ‘orbicular’ may be either a solid (three dimensional) shape (globe, sphere), ‘a spherical body; something of globular shape,” or a round line “encircling a part or opening.”

- (moss) theca in ped. apice arcuato flavido inclinata v. nutans orbicularis (Mueller), theca on a pedicel [ped. = pedicello] arcuate at the apex, yellowish, [the theca] inclined or nodding, orbicular [i.e. globose].

NOTE:. The adjectives round and rounded are also ambiguous with respect to plane or solid shapes.