118 I.. I\<ll. 1)1.111 1' HOSIAVINC.K. 



ol' llie plant, a slerile basal cell, as in Kiickuck's j)laiil.s (1. c), being 

 not developed. Sueb a cell, however, is always mel with under the 

 hairs which ha\i' the structure described by nie (I. c). The under- 

 most loni^ cell ol the hair is as a rule somewhat constricted at some 

 distance from the base. In some cases I lound the cell situated 

 under the hair developed into a sporangium, the cell having pro- 

 truded on one side and upwards along the base of the hair and 

 formed an opening at the upper end of the prolongation. I am 

 uncertain whether unripe unicellular spf)rangia also occur. 

 Loc. Aloiii; ('ape HisiiKUck I'oiiiiisuhi. 



Stictyosiphon Kiit/.. 



33. S. tortilis (Rupr.) Reinke. 



K. Rosenvinge (1893) p. 868, (1898 I) p. 70; Jonsson (1904) p. 34. 



Occurs rather abundantly in gatherings from the harbour and 



some other localities, but almost always loose, together with other 



loose algæ, as Pylaiella, and sterile. One filament only, taken in 



the harbour in August, had well-developed, rather ])rominent pluri- 



locular sporangia. In the old loose plants the articulation is often 



very prominent, much as in some Sphacelaria. Hairs occur only 



rarely. Found in 4 to 11 meters depth. 



Loc. Danmarks Havn; Baadskæret ; l):iy oll" Vesterdalen. In clumi)s in 

 the ice at Caj)e Amélie, April. 



Punctaria Grev. 



34. P. glacialis n. sp. 



Fions eximie stipitata, stipite 5 — c. 14 mm. longo, superne 

 abrupte cuneatim dilatato. Lamina oblonga vel lingulata aut late 

 elliplica, basi late cuneata, long. 17 — c. 4ö cm., latit. 4— 14*5 cm., ple- 

 rumque 4 — 75 cm., crassit. ad 140//, colore in sicco olivaceo-fusco, 

 substantia tenera, fragili, e stratis cellularibus 3 — 6 composita, cellulis 

 interioribus quam exterioribus aliquantum majoribus. Pili omnino 

 desunt. Sporangia unilocularia sparsa, ex exleriori visa eadem fere 

 forma ac cellulæ vegetativæ exteriores, parte interne sæpe latiore, 

 alt. 45 — 53//, lalitudine supra 21 — 25/^, infra 30—50//. 



This good-sized species most resembles Punctaria latifolia Grev. 

 as to the form and the consistency of the frond. It is distinguished 

 from it through the darker colour and the want of plurilocular 

 sporangia. In colour and structure it more resembles P. planiaginea 

 (Roth) Grev. The want of hairs distinguishes it from both the 

 named species as well as from all other species of the genus. Most 

 of the specimens are oblong or Ungulate of nearly equal breadth in 

 the whole length of the frond, only at the base and usually also at 



