sporangiolumn.

1824 R. K. Greville Flora Edinb. p. xxiv When the sporangium contains distinct bodies inclosing Sporidia, the sporangium is said to contain Sporangiola.

1859 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Sporangiole.

1875 M. C. Cooke Fungi 52 It is still more evident if we sow the spores of the sporangiolum.

1895 F. W. Oliver et al. tr. A. Kerner von Marilaun Nat. Hist. Plants II. 673 In Thamnidium the sporangial branch ends in a large sporangium, and in addition bears laterally a number of tiny sporangia (sporangioles) containing four spores each.

1928 C. W. Dodge tr. E. A. Gäumann Compar. Morphol. Fungi ix. 105 Under favorable conditions of nourishment, however, they are continued through several generations when the sporangioles become as large and multispored as the sporangia.

1953 J. Ramsbottom Mushrooms & Toadstools xviii. 209 In this common form..the fungus usually shows finely-branched endings (arbuscules) with characteristic granular masses (sporangioles) when they are being absorbed by the host plant.

1969 F. E. Round Introd. Lower Plants iv. 67 No flagellate cells have ever been found in the class [sc. Zygomycetes]..; the spores germinate directly into a germ tube and are formed either in a large spherical sporangium or in various reduced few-spored ‘sporangioles’ or even singly.