CRY PTOGAMI A ALG^. 215 



a fibrous root ; branches swelling at the ends into pod-like 

 simple receptacles. 



127. HIMANTHALIA. Frond plane, dichotomous, shooting from 



a cup-like base ; branches linear, elongate, obtuse ; air- 

 bladders none ; seeds in small innate clusters scattered 

 throughout the frond. 



* Olivaceous, coriaceous, fibrous, continuous, stalked, the stem ex- 

 panded into a simple or divided leaf. Marine. 



128. LAMIKARIA. Frond stalked, with a fibrous root, support- 



ing a coriaceous or membranous plane leaf; seeds in small 

 immersed clusters, scattered throughout the expanded 

 frond. 



* * * Purple, red or rose-coloured, unchanged in drying, coriaceous or 

 membranous, expanded into leaves or a leaf-like frond. Marine. 



129. HALYMENIA. Stalk coriaceous, simple, or more or less 



branched, dilated into a leaf-like divided or simple frond, 

 nerveless, or obsoletely nerved at the base only ; clusters 

 either punctiform and immersed, or tubercular, rounded 

 and sessile. 



130. DELESSERIA. Stalk coriaceous, branched, foliaferous, the 



leaves nerved with the percurrent branches ; fructification 

 of two kinds, capsules containing a globular mass of seeds, 

 and ternate granules forming definite clusters in the frond 

 or in distinct leaflets. 



131. ODONTHALIA. Frond plane, between membranaceous and 



cartilaginous, dark vinous red, with an obsolete midrib, 

 and alternately toothed at the margin ; fructification mar- 

 ginal, axillary, or in the teeth 1. capsules containing 

 pear-shaped seeds ; 2. slender processes containing ternate 

 granules. 



132. CHONDRUS. Frond plane, thickish, coriaceous, dichotomous- 



ly branched, nerveless ; receptacles tubercular, hemisphe- 

 rical or oval, scattered on the dik of the frond. 



