1559 



rubra, cartilaginea, angusta, complanata, crassa, subdichotomo-ramosa, 

 ramis elongatis ubique ramulis proliferis confertis et fasciculatis apud 

 margines obsitis, obsolete serratis fimbriatisque; strato medullari 

 filamentum monosiphonium crassumque centrale et filamenta descen- 

 dentia tenuiaque numerosissima ostendente, strato cortical! filamenta 

 radiantia 2-4 - chotomo-ramosa cellularum tenuiorum intus ma- 

 jorum extusque minorum ostendente; tetrasporangiis antheridiisque 

 adhuc ignotis; ramellis auxiliaribus curvatis, e cellulis paucis discoi- 

 deisque compositis; cystocarpiis immersis, ubique in ramis superio- 

 ribus non tumefacientibus, reniformibus profunde paucilobatis, inferne 

 pedicellis curvatis suppositis; sporis in filamentis 2-3 - chotomo-ra- 

 mosis, e cellulis basalibus paucis pallidioribusque radiantibus; carpo- 

 stomio, ut videtur, nullo . 



Ilab. in saxis apud oras Californienses meridionales . 



Under the name proposed above, I have placed plants which 

 I have observed most carefully at a locality locally known as Dil- 

 lon 1 s Beach situated on the coast of California just north of the 

 mouth of Tomales Bay. I have also collected others at Carmel Bay, 

 near Monterey, California. The species has been collected at Santa 

 Cruz (or Pacific Grove ?), California, by D.r C. L. Anderson and ap- 

 pears in some copies of Farlow, Anderson and Eaton's Alg. exsicc. 

 Am. Bor., mentioned above. I have also received specimens from 

 as far north on the California coast as Trinidad Head, whence they 

 were sent by M.r C. M. Drake. Thus far, then, it seems to be a 

 plant of the middle California coast. Leptocladia conferta grows in 

 rather bushy tufts which are dark red and rigid, where shallow 

 pools are left by the receding tide in the lower portion of the li- 

 toral zone . 



One characteristic feature of this species is the abundance of 

 the fasciculate proliferations. I have visited the locality at Dillon's 

 Beach during most of the season of the year and have never, as yet, 

 found any really young plants. All seem older and have few to very 

 many of the characteristic proliferations which give the species its 

 bushy appearance. The specimens are fairly constantly cystocarpic 

 and, although I have had the opportunity of examining several hun- 

 dred plants,] have found no indication of either tetrasporic or anthe- 

 ridial individuals . 



