gastridium lendigerum

from The Collaborative International Dictionary of English v.0.48
Nit \Nit\ (n[i^]t), n. [AS. hnitu; akin to D. neet, G. niss,
   OHG. niz; cf. Gr. koni`s, koni`dos, Icel. gnit, Sw. gnet,
   Dan. gnid, Russ. & Pol. gnida, Bohem. hnida, W. nedd.]
   (Zool.)
   The egg of a louse or other small insect.
   [1913 Webster]

   {Nit grass} (Bot.), a pretty annual European grass
      ({Gastridium lendigerum}), with small spikelets somewhat
      resembling a nit. It is also found in California and
      Chile.
      [1913 Webster]
    

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