380 University of California Publications in Botany [Vol. 10 



this differs from F. ohtusiloha in having lobules as broad as high 

 (.27 mm.), not broader than high (.2 mm. X .125 mm.) ; underleaves 

 three times broader than the stem, not twice, obeuneate not orbicular ; 

 margin dentate on both sides, not entire ; with segments subacute, not 

 obtuse or rotundate. It is somewhat of a risk to found a new species 

 on sterile Frullania plants, but the remarkable obtuse or rotundate 

 segments of the underleaves enable the plant to be distinguished 

 readily from any other. 



Aspiroraitus novazealandica sp. nov, 



Plate 109 



Monoicous; small, dark green in color, terricolous, densely caespi- 

 tose; fronds solid, 10 cells thick at the middle, 50-60 cells wide, 

 cortical cells dark, walls thick, inner cells hyaline, broadly cuneate, 

 lobate, margins laciniate-dentate, crispate; cuticle tuberculate; 

 involucre small and short, 5 cells thick near base, at mouth thin, 

 lacerate ; capsule reddish brown, stomatif erous ; male alveoles adjacent 

 to each other, crowded ; antheridia solitary, large, stipitate, stipe 6 

 single cells long. 



Habitat.— Taupo, Mav 16, 1904. Nos. 36 and 47. Tvpes Herb. 

 Univ. Calif., Nos. 213698, 213699. 



Dimensions. — Fronds 1 cm. long and broad ; lobes 3 to 4 mm. long, 

 2 mm. to 4 mm. broad, .75 mm. thick ; involucres 1.5 mm. to 2.5 mm. 

 long X -6 mm. to .75 mm. broad; capsule 3 cm. long; stomata .03 mm. 

 X .02 mm. ; antheridia .25 mm. X .225 mm. 



Observations. — This is the first Aspiromitus recorded from New 

 Zealand; it is remarkable for its small and short involucres and the 

 crowded, large alveolas with large solitary antheridia. 



The specimens were much overrun with Solenostoma brevissimum 

 Pearson, making it difficult to make a satisfactory examination. Only 

 young spores and elaters were observed. 



