Notes on the Bermudas. 153 



I. MELANOSPERME^ OS FUCALES. 



Order I. Fucaceae. This order is the most extensive among the 

 Melanosperms, comprising 230 species, more than half of which 

 belong to the genus Sargassum ; the rest are distributed into 20 

 or 30 generic groups. The largest number of generic forms are 

 found between the parallells of 30° and 40°, N. and S. In the. 

 Northern seas this order is, however, more striking than in the 

 southern, and covers a larger surface of coast. The American 

 genera are seven in number, of which the following representatives 

 are found in Bermuda, viz. : Sargassum vulgare, S. bacciferura) and 

 several species not described by Harvey) ; Fucus, ceranoides 

 and F. distichus. 



Order II. — Sporochnacese. Sporochnus pedunculatus, a plant 

 with a beautiful crested stalk consisting of bissoid jointed fibres. 



Order IV. — Dictyotacees. Haliseris polypodioides ; Padinai 

 pavouia and P. (undescribed). Zonaria parvula and Z. lobata t> 

 Taonia atomaria or Shroedaria ; Dictyota dichotoma ; D. crenu- 

 lata ; D. ciliata; D. intricata; D, Bartayresiana ; Asperococcus 

 sinuosus. 



Order V^ — Chordariacese. Mesogloia vermicularis ; M. vires- 

 cens ; M. GriflSthsia. 



II. RHODOSPERMEiE OR CERAMIALES, 



Order I. — Bhodomelacese. Acanthophora Thierii ; Digena 

 simplex ; Polysiphonia fibrillosa ; P. elongata ; Bostrychia scor- 

 pioides ; Dasya Mucronata ; D. pediculata. 



Order II. — Laurenciacese. Laurencia obtusa ; L. papillosa ; 

 L. scoparia, and several varieties. 



Order III. — Corallinaceae. Corallina officinalis ; and several 

 undescribed. 



Order IV, — Sphserococcidese. Botryoglossum platycarpum ; 

 Gracilaria multipartita ; G. confervoides ; G. armata; G. divari- 

 cata. 



Order V. — Gelladiaceae. Gelidium corneum ; G. abnorme ; 

 Eucheuma isiformis or Wardemania ; Hypnea musciformis. 



Order VIII. — Helminthocladese. Helminthora divaricata ;. 

 Liagora valida ; L. pulverulenta. 



Order IX. — Wrangeliacese. Wrangelia penicillata. 



Order X. — Rhodymeniacese. Rhodymeniapalmata; R. laciniata. 



Order XI. — Cryptonemiacese. Gigartina Teedii ; Chondrus 

 crispus ; Chylocladia rosea ; Chrysymenia Halymenioidis ; Ch^ 

 uvaria; Gloiosiphonia Capillaris. 



