450 
and in July it usually attains the maximal size (23 cm). The growth seems to cease 
towards the end of July or in the beginning of August, in September the trichoblasts 
begin to fall off, but as late as November specimens with well preserved tricho- 
blasts may be met with. At the end of the year the plants die, in many cases with 
the exception of the creeping filaments from which new shoots are given off next 
spring. The new sboots in winter bear at the top a tuft of simple or feebly branched 
trichoblasts which are incurved over the upper end of the stem (fig. 410). 
In the Danish waters from the Skagerak to the Belts the species reached a length 
of 20 cm or a little more. In the western Baltic Sea the greatest length observed 
was 12 cm and in the Sound south of Helsingør only 5 cm. It does not usually 
occur in the fjords; in the Limfjord it has only been met with once, and in the 
Isefjord only in the entrance. It occurs in the sublittoral region. At Hirshals it was 
found near land in about 1 meters’ depth, and in the harbour of Frederikshavn it 
was found in the same depth, but otherwise it has not been met with over 4 meters’ 
level, in the Great Belt and the western Baltic Sea not over 6 meters’ level, and in 
the Sound south of Helsingor only in 10 meters’ depth. It has been found most 
frequently in 7,5 to 15 meters’ depth and descends to 38 meters’ depth. It grows 
most frequently on various Algæ, in particular Furcellaria, but also occurs on shells 
of Molluses and barnacles and on stones. 
Localities. Ns: ZQ, jydske Rev, 24,5 m; aF, off Thyborøn, 31 m; aE, 16 m. — Sk: YN!, YN? 
within Bragerne, 6,5—10 m; SY, off Løkken; ZK?*, off Lønstrup; off Hirshals, several places 11—15 m, 
near land, 1 m. — Lf: bU, Ejerslev Næse, 3—8 m, one specimen. — Kn: Off Skagen, 9,5 m; off Hulsig 
(Boye Petersen); Herthas Flak (Borgesen); around Hirsholmene, 5,5—7,5 m; Frederikshavn; off Frede- 
rikshavn; several places near Nordre Ronner; GM, Engelskmands Banke; TO, TP, ZA, Tonneberg Banke, 
16—18 m; NI, FE, dS, a. o. pl., Trindelen, 8—16 m. — Ke: 4*/, miles S.W.°/, W. of Fladen light-ship, 
30 m (C. A. J.); FD, east of Leso; VY, Fladen; ZJ, EX, EV, Groves Flak; XA; EU, Lille Middelgrund, 
14m; ER, Fyrbanken, 28 m; Store Middelgrund, 10m (C. A. J.); Ostindiefarer Grund; OO, Soborg 
Hoved Grund; bR, Vesterlands Grund off Gilleleje, 7,5 m. — Km: 6 miles S.S.W.!/; W. of Læsø Rende 
light-ship (C. A. J.); 54/2 miles N. by E.*/, E. of Østre Flak light-ship (C. A. J.); XD, XC, south of Læsø; 
VP, south of Leso; ND, NC, BH, off Gjerrild Klint; Gjerrild Bugt (Lyngbye). — Ks: FO, NB, off Hav- 
knude; EM, Lysegrund; RL, west of Ostindiefarer Grund; near Hesselo (Lyngbye); D, north of Grenne 
Revle, 11,5 m; Tisvilde (Lyngbye); GG, GF, Sjællands Rev; EJ, entrance to Isefjord; EH, west of Lynæs. 
— Sa: FU, Begtrup Vig; MY, FT, north of Samsø; BE, off Sletterhage, 10 m; FS, Vejro Sund; GD, GE, 
north of Sejerø; MP, Falske Bolsax; AS, Mejlgrund; FX, west of Tunø; AT, Syanegrund, 5 m; MQ, south 
of Paludans Flak, 11,5 m; Hofmansgave (Lyngbye, Hofman Bang, C. Rosenberg); AJ‘, north of Æbelø, 
4m; AY, Ashoved; AX, Bjornsknude, 9,5 m. — Lb: FZ, Kasserodde, 6m; cX, between Strib and Neder- 
balle, 35—44 m; Fænø Sund; north of Fænø Kalv; off Stenderup Skov, 13—15 m; Aarø Sund (Reinke); 
Lillegrund (Reinke); CD, Helnæs Hoved Flak, 4m; CC, south side of Hornenzs, 7,5 m; dH}, east of 
Hesteskoen, 18—19 m; CF, west of Lyø; dQ, south of Lyø, 22 m. — Sf: UV, north of re, 13 m. — 
Sb: Off Refsnæs; MN, north of Asnæs, 11 m; GS> south of Asnæs; LH, Elefantgrund; eN, S.W. of Mus- 
holm, 18 m; AA, north of Sprogø, 23—26 m; XS, Kleverhage; GZ, north of Egholm; DP, UJ, north of 
Onsevig; US, Langelandsbelt, 38 m. — Su: Off Ellekilde, 5,5 m, cast ashore north of Helsingor and at 
Hellebæk (C. Rosenberg, Ørsted, Joh. Lange); PZ, east of Hveen, 10—19 m. — Bw: LG, off Vidso, Ærø, 
9,5 m; bV, bX, off Kobbel Skov, 6—13 m; cG, west of Kegnæs; south of Als (Reinke); cE, Middelgrund, 
south of Als, 13 m; dK, Pols Rev, 6—7 m; Vodrups Flak, 9,5 m; DU, off Dimesodde, Langeland, 11 m; 
KX, Femerbelt, 19 m or deeper. 
