A Grammatical Dictionary of Botanical Latin

pusillus,-a,-um (adj.A): very small, very little; insignificant, petty; see perpusillus,-a,-um (adj.A), q.v.: very, very small; see tiny; see small;

- radix pusilla (F.Mueller), the root very small.

- herba pusilla, acaulis (B&H), a very small herb, lacking a stem.

- herba pusilla, annua, humifusa, ramosissima, glabra, v. stellatim hispidula. (B&H), a very small herb, annual, spread over the ground, very much branched, glabrous or stellately hispidulous.

- herbae suffruticesve prostratae, saepe pusillae (B&H), herbs or prostrate subshrubs, often very small.

- [algae] caulis pennam corvinam crassitie aequans vel parum superans, semiteres vel triqueter, interdum spinis pusillis & remotis hic illic instructus (Agardh), stem equalling a crow’s wing in thickness or somewhat overtopping it, somewhat cylindrical or three angled, sometimes here and there provided with very small and distant spines.

- [moss] plantae pusillae, lineas 2 circiter altitudine metientes, subsimplices (DozyMoek), plants very small, measuring around 2 lines in height, not much branching [i.e.somewhat unbranched].

- herba pusilla dichotoma floribus numerosis minimis (DeCandolle), herb very small, dichotomous [i.e. with divisions in pairs], with the flowers numerous, very small.

- [Ascyrum pumilum ‘dwarvish’] caule pusillo simplici quadrangulo (DeCandolle), with the stem very small, unbranched, 4-angled.

- interdum gracilenta est et pusilla (Nyl.), sometimes thin and very small.

- [algae] frons pusilla, radio longitudinem lineae vix aequante (Agardh), the frond very small, with the radius scarcely equalling the length of a line [ca. 2.1 mm].

very often used in the epithets of diminutive acrocarpous mosses: Anoectangium pusillum; Dicranum pusillum, Seligeria pusilla; Zygodon pusillus; Potamogeton pusillus “very small” var. minor “smaller” (Fernald 1950).

Pusillanthus Kuijt; Potamogeton pusillus “very small” var. minor “smaller” (Fernald 1950); Drosera pusilla; Oxalis pusilla.

Calicium pusillum [a lichen]

very often used in the epithets of diminutive acrocarpous mosses: Anoectangium pusillum; Dicranum pusillum, Seligeria pusilla; Zygodon pusillus; Potamogeton pusillus “very small” var. minor “smaller” (Fernald 1950).