pinnulan.

1707 H. Sloane Voy. Islands I. 16 Those Branches undermost..being the largest about a Foot long having their Twigs, on which stand the Pinnulæ or Leaves alternatively.

1777 J. Lightfoot Flora Scotica I. 327 The leaves are pinnated with about 20 pair of long Pinnæ, which are again semipinnate with short indented Pinnulæ.

1863 Philos. Trans. 1862 (Royal Soc.) 152 1083 (caption) The point of a leaflet (pinnula), magnified.

1901 Science 7 June 885/2 The nectaries..occur on the fronds at the bases of the pinnæ and pinnulæ.

1916 Bull. Torrey Bot. Club 43 220 Barrowsi shows a slight increase in the lobing of the pinnulae, that is, it is twice-pinnate pinnatifid.

1734 E. Albin Nat. Hist. Birds II. xi. 11 The Ends of the Pinnulæ [of a barn owl's wing feather] are not contiguous one to another, but stand at a distance like the Teeth of a fine Comb.

1764 Philos. Trans. 1763 (Royal Soc.) 53 419 There were still remaining several of the suckers like heads of Polypes disposed along its sickle-shaped Pinnulæ.

1869 Amer. Naturalist 3 276 These arms..are unbranched and built up of twenty-eight to thirty-six joints.., and wearing on every second joint a ‘pinnula’.

1955 Systematic Zool. 4 175/2 Each pinnule [of a pogonophoran]..is penetrated by two parallel, very fine blood vessels which unite at the tip of the pinnula.

2000 Beaufortia 50 151 In most of the specimens [of a serpulid polychaete], many eyespots are present in the distal third of radioles and pinnulae.