Victorian Plants. 443 



ZOSTER A. 



1888. Flowers provided each with a bract. 



Maritime, creeping ; leaves comparatively short, narrow- 

 linear, truncate or excised at the upper end, with only 

 one conspicuous longitudinal venule ; stalk of the inflores- 

 cence filiform ; clasping stalk of the floral leaf rather 

 short ; flowers few, extremely small, both kinds alter- 

 nating in two rows on their membranous rhachis ; anther 

 narrow, one-celled ; fruits very minute, ellipsoid ; seed 

 dark. Z. liana. 



Flowers unprovided with bracts. 



Maritime, creeping ; stems compressed ; leaves broadish- 

 linear, comparatively long, rounded-blunt at the upper 

 end, with only one conspicuous longitudinal venule ; 

 clasping stalk of the floral leaf rather long ; flowers 

 many, both kinds alternating in two rows on their mem- 

 branous rhachis ; bracts exceptionally and then only 

 scantily developed ; fruits minute, ellipsoid ; seed pale. 



Z. Tasmanica. 

 NAJAS. 



1889. Leaves very narrow, minutely denticulated. 



Leaves rather short, their stalks clasping, provided with 

 stipular appendages ; flowers minute ; style one ; stigmas, 

 two, capillary ; fruit very small, sessile, cylindric-ellipsoid, 

 its envelope bract-like. N". tenuifolia. 



AX.THENXA. 



1890. Flower-stalks very short. 



Stem and branches threadlike-thin ; leaves rather short, 

 their stalk clasping, the floral leaves reduced to bracts and 

 almost opposite; flowers somewhat spicate, distant; 

 anthers almost sessile, two-celled ; styles conspicuous, 

 thin, as well as the stigmas solitary, the latter almost 

 ovate, concave ; fruitlets very small, raised on stalk-like 

 bases, obliquely narrow-ellipsoid. Figure 120. 



(Lepilaena Preissii.) A. Preissii. 



CYIKODOCEA. 



1891. Leaves almost semicircularly excised at the summit. 



Propagation mainly by leafy buds ; stems and branches 

 elongated ; leaves rather long, broad-linear, quite firm ; 

 flowers very small, concealed by the clasping appressed 

 leaf-stalks ; united filaments very thin ; fruitlets termi- 

 nated by the persistent style and stigmas. 



C. zosterifolia. 



