XV111 SYNOPSIS OF THE SPECIES. 



75. plumosa ; filaments naked at the base, long, irregularly divided, inarticu- 

 late ; branches pectinate-pinnate ; pinnae opposite, closely set, simple. 

 (Tab. LXXXVII.) 



76. cirrhosa; parasitical, naked at the base; filaments short, densely tufted, 

 jointed throughout, simple or divided ; branches pinnate ; pinnae opposite 

 or irregular, of unequal length. (Tab. CLXXVIII.) 



77. fusca; densely tufted, capillary, distantly and irregularly branched ; branches 



very erect, subsimple ; ramuli few, scattered, club-shaped or three-pronged ; 

 articulations twice as long as broad. (Tab. CXLIX.) 



78. radicansj filaments erect, or decumbent and rooting, sparingly branched; 

 branches simple, scattered, erect, naked ; spores clustered, sessile, globose. 

 (Tab. CLXXXIX.) 



79. racemosaj spores pedunculate, in compound racemose, lateral clusters. 



(Tab. CCCXLIX.) 



XXXIV. ECTOCAKPUS. 



80. siliculosus; tufts soft, yellowish-olive; filaments very slender, excessively 

 branched ; ultimate branchlets alternate ; propagula stalked, subulate, atten- 

 uate to a fine point. (Tab. CLXIL) 



81. amphibiusj tufts short, soft, pale olive; filaments subdichotomous ; ramuli 

 scattered, subulate; articulations twice or thrice as long as broad; pro- 

 pagula linear-attenuate, mostly sessile. (Tab. CLXXXIII.) 



82. fenestrates j pale olive-green, very slender, in small tufts; branches alter- 



nately and laxly decompound; articulations twice or thrice as long as 

 broad; propagula stalked, at first clavate, afterwards elliptic-oblong, 

 obtuse. (Tab. CCLVII.) 



83. fasciculatus j tufts olivaceous, dense; branches set with alternate or secund 



fascicles of minute, secund ramuli ; propagula sessile, secund, close together, 

 ovate-acuminate or subulate. (Tab. CCLXXIII.) 



84. Hincksisej tufted; filaments irregularly branched; branches fiexuous, set 

 with secund ramuli which are pectinated along their upper side ; utricles 

 conical, lining the inner face of the ultimate ramuli. (Tab. XXII.) 



85. tomentosusj filaments interwoven into a sponge-like, branching frond; 



ramuli few ; propagula stalked, linear-oblong or fusiform, obtuse. 

 (Tab. CLXXXII.) 



86. crinitusj filaments long, decumbent, stratified, sparingly branched; 

 branches subsimple, distant ; ramuli few, patent ; spores globose, scattered, 

 sessile ; articulations twice or thrice as long as broad. (Tab. CCCXXX.) 



87. pusillusj filaments tufted, interwoven, sparingly branched; branches 



distant, patent; ramuli few, divaricating; spores roundish-oblong, sub- 

 sessile, frequently opposite. (Tab. CLIII.) 



88. distortus j filaments densely matted, angularly bent, flaccid and fragile ; 

 branches divaricated, alternate or secund ; ramuli horizontally patent, re- 

 curved, obtuse ; spores obovate, subsessile. (Tab. CCCXXIX.) 



89. Landsburgii j tufts intricate, small; filaments tenacious, zigzag, divari- 

 cately much branched; branches bristling with spine-like horizontal 

 ramuli ; articulations shorter than broad ; dissepiments very narrow. 

 (Tab. CCXXXIII.) 



90. littoralisj tufts dense, interwoven, olive-brown; filaments coarse, much 



branched; ultimate branchlets patent, alternate or opposite; propagula 

 forming oblong swellings in the branches. (Tab. CXC VII.) 



