188 



The crusts are thin, bright purple, up to 1,5 cm in diameter. The basal layer 

 consists of isodiametrical cells. The erect fdaments are 4,5—5,5 t>. thick. Not un- 

 frequenlly transversal fusions between conliguous cells in ditTerent erect filaments 

 occur (tig. Ill B). The sporangia are normally lateral on the erect filaments and 



sessile. In some cases however I found 

 them pedicellate, on a one-celled stipe, 

 as shown in fig. Ill C, D. The sporangia 

 are first divided by an oblique trans- 

 versal wall (fig. Ill A) and later by 

 two walls perpendicular to the first; 

 at maturity they are 21 — 22 // long, 

 11 — 14 I), broad. 



IvucKUCK has established the genus 

 Plagiospora on the oblique division of 

 the tetrasporangia. As such divisions 

 occur not only in Hildenbrandia, as men- 

 tioned by KucKUCK, but also in Criwri- 

 opsis (and further in Petrocelis), and as 

 in the genus Criioriopsis both terminal and lateral sporangia occur, even in the 

 same species (Cr. hyperborea), it is justified to refer the species here mentioned to 

 the genus Criioriopsis. 



Locality. Lb : At Lyngsodde, right opposite to Middelfart, about 15 meters, with sporangia in Julj'. 



Fig. ill. 



Criioriopsis qracilis. A. erect lilameiil with two-celled spor- 

 angium. -130 : 1. ]}, lusion between cells of two difl'erent 

 filaments. C and D, filaments with sporangia on one-celled 

 stipe. B D, 730:1. 



Cruoriella Crouan. 

 1. Cruoriella codana sp. n. 



Thallus tota superficie inferiori paulum calcaria substrato adhserens, rhizinis 

 unicellularibus affixus, diamelro 2—5 (?) cm lalus, purpureus. Stratum basilare 

 (hypothallium) e lobis lateraliter conjunctis e fills flabellatim ramosis compositis for- 

 matum, cellulis 14 — 33 ti longis, 9 — 14 ^ latis, 9 — 11 // altis. Thallus adultus e 

 pluribus frondibus superpositis compositus. Fila verticalia frondium singularum 

 plerumque e cellulis 3 — 10 formata. — Paranemata nematheciorum sexualium sur- 

 sum attenuata, e 4 — 5 cellulis composita, basi superne 2 — 3(— 4)/^ lata. Anthe- 



ridia, in nematheciis specialibus aut in iisdem ac carpogonia, divisionibus trans- 

 versalibus et longitudinalibus filorum orta, diametro 2//. — Carpogonia in ramulis 

 specialibus 4 — 5-cellularibus terminalia, membrana obliqua curvata a cellula pen- 

 ultima limitata. Celluhe auxiliariae in filis aliis intercalarise. Cystocarpia e filis 

 erectis paucis parce ramosis composita. Carposporse 11 — 12/^ diametro. 



The specimens on the base of which this species has been described were for 

 a long time referred by me to Cruoriella armorica Crouan ^, a species which has 

 1 Ann. d. scienc. nat. 4e ser. t. 12, 1859, p. 289. 



