54 А NEW FAMILY OF FLOWERING PLANTS. 
rise to adventitious roots which creep over the rock, attached by hairs and 
haptera. Roots of great variety of form, filamentous, ribbon-like, flattened 
and lichen-like, cup-like, &e., sometimes with drifting portion as well as 
ereeping. Secondary shoots borne on the roots, endogenously, of great 
variety of forms, sometimes mere tufts of leaves, sometimes large thalloid 
bodies, or of other forms, with terminal flowers, often in sympodia. Leaves 
usually distichous, often large, compound or simple, usually much branched, 
often hairy above, usually sheathing and stipulate, with lateral branch borne 
under a second and lower stipule. Axis often elongating to bear the flowers, 
the leaves enlarging at the base to form bracts, the tips falling off. 
Includes the other genera of existing Podostemacez (except Hydrostachys). 
