SYNOPSIS OF THE SPECIES. XXX111 



277. sparsumj parasitical, minute, scattered; filaments tufted, sparingly 

 branched ; branches simple, spreading, unequal ; articulations 2-3 times as 

 long as broad. (Tab. CCXCVII.) 



278. Daviesii; rose-red, minute, tufted, much branched; branches curved; ra- 

 muli longish, crowded toward the axils of the secondary branches ; tetra- 

 spores on the axillary ramuli, stalked. (Tab. CCCXIV.) 



279. virgatulumj rose-red, minute, tufted, much branched; branches long and 

 straight, alternate or secund; ramuli from every joint, short, obtuse, 

 mostly secund ; articulations thrice as long as broad ; tetraspores scattered. 

 (Tab. CCCXIII.) 



III. CHLOROSPERMEiE. 



Order 14. SIPHONACE^. 



LXXXVIII. CODIUM. 



280. Bursa; frond spherical, hollow. (Tab. CCXC.) 



281. adhserens; frond forming a velvety crust on the surface to which it 

 adheres. (Tab. XXXV. A) 



282. amphibium; fronds minute, erect, cylindrical, simple or nearly so, obtuse, 

 aggregated in widely spreading strata. (Tab. XXXV. B) 



283. tomentosum; frond dichotomous. (Tab. XCIII.) 



LXXXIX. BRYOPSIS. 



284. plumosaj branches naked below, closely pinnated above the middle ; pinnae 

 subdistichous. (Tab. III.) 



285. hypnoides - slender, very much branched; ramuli capillary, ramellose 

 towards the tips, irregularly inserted. (Tab. CXIX.) 



XC. VAUCHERIA. 



286. submarinaj tufted, dichotomous, fastigiate; sporangia numerous, lateral, 

 sessile, ovate or lanceolate. (Tab. CCCL. B.) 



287. marina j tufted; branches few, long, obtuse; sporangia solitary, obovate, 

 pedicellate, lateral. (Tab. CCCL. A.) 



288. velutina; filaments creeping; branches short, erect, fastigiate, woven into 

 a velvety stratum ; sporangia globose, solitary, lateral, on short stalks. 

 (Tab. CCCXXI.) 



Order 1 5 . CONFEEVACEiE. 



XCI. CLADOPHORA. 



289. Browniij tufts cushion-like, dense, fastigiate; filaments interwoven, ilcx- 

 uous, slightly branched ; branches subsimplc ; articulations tluckened 

 upwards, 4-5 times as long as broad. (Tab. XXX.) 



290. repensj tufts dense, globular; filaments rooting below, slightly branched; 



branches erect, sub-simple; ramuli IVw ; articulations cylindrical, 10-20 

 times as long as broad. (Tab. CCXXXVI.) 



291. pellucidaj rigid, erect, setaceous, dark green, di-trichotomous ; axils of 



