Cyclosporiii», DiirvilUcicea?, (iurvillaja. 



Familia IV. DURVILLJIACE^E Oltm. 



Ihirri/Jirairw (iKinniins [IS8'.i| l!cit,r. Kcnntn. Fuc. piif,'. f,9, Ue Toni Syst.. 

 Uebcrs. Fiicoiil. IHOI, p. 173. 



l''roiis lioiiio^'on(>;i, organis imllis discrotis; S(,'apiii(li;i (nnlso.N.u;iliu) 

 por totiuii rrondis superficlem sparsa; oogonia polyspora, h. c. corum 

 (■oiit(Mitas tnnc transverse 2-scptatus, loculo intcrmedio longitrorsum 

 nniscpt:ilo, tniic tnmsvcrsc :5-sci)t;itus, lociilis diiolnis iiitcnnodiis loii- 

 Kitrorsnin uniseptatis. 



Conspectus generum 



I Frons compresso-plana ant omnino plana (Genwncr). 



Durvillirn I-iory. — Frons compresso-plana, iiitus lacunosa, palmatifiJa. 

 Hdrcophi/cus Kuetz. — Frons plana, solid.n, pinnatitida aut snbdigitata. 



II Frons cylindracca (nec compresso-plana) [Eimv.llnidcir). 

 Splanchnidiuin Grev. — Frons cylindracea, rnpicola, tubulosa et intus a(|uoso- 



gclatinosa, undique piiinato-ramosa. 

 Notliciu Bail. et Harv. — Frons fililbrmis, epipliytica, solida, vage ramosa. 



DURVILLitA Bory [182G] Dict. class. IX, p. 19-2, Voyage de la Co- 

 iiuille (1828) p. 65 (Etym. ab illustri navigatore D'Urville). Kuetz. 

 Sp. p. 585, J. Ag. Sp. I, p. 187, Aresch. Phyc. extraeurop. (1854), p. 

 14 (340), De Toni Syst. Uebers. Fucoid. 1891, p. 173, Kjellin. in 

 Engl. & Prantl Natiirl. Pflanzenfam. 97, p. 279 (excl. Sarcophyco), 

 Durcillea Cunningh. [1836] Bot. Mag. Comp. II, p. 328, Fiici, La- 

 minarice, Halymenioi, Ecklonia\ Himanthalim sp. — Frons ex- 

 p;inso-plana, in segmenta loriformia p;ilmatifida, intra str;itum 

 cortic;ile apparatu meduUari siepe iii loculos laxe divisa. Concepta- 

 cula seu scaphidia per totam frondem sparsa, in strato corticali 

 infra superficiem excavata, sphferica, cum ostiolo superficiali per 

 canalem communicantia, dioica; oogonia ebovoidea, parietalia, oospo- 

 ras quaternas foventia; oosporse intra oogonium eo modo ort;Te ut 

 contentus oogonii septis duobus transversalibus in p;irtes 3, (luainim 

 media longitudinali divisione qu;irt;xm separet. dividetur; paraphy- 

 ses inter oogonia dispositte, pariet;xles, subsiinplices. 



Obs. Appanxtus adfixionis tum calloso-discoideus tum fibrosus 

 (fibris astomosantibus). Frons ampla, coriacea, juvenilis compres- 

 so-plana, demum inflata, stipitem compresso-teretiusculum cum 



