188 
The crusts are thin, bright purple, up to 1,5 cm in diameter. The basal layer 
consists of isodiametrical cells. The erect filaments are 4,5—5,5 » thick. Not un- 
frequently transversal fusions between contiguous cells in different erect filaments 
occur (fig. 111 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. 111 C, D. The sporangia 
are first divided by an oblique trans- 
versal wall (fig. 111 A) and later by 
two walls perpendicular to the first; 
at maturity they are 21—22 y long, 
11—14 » broad. 
Kuckuck has established the genus 
Plagiospora on the oblique division of 
Fig. 111. the tetrasporangia. As such divisions 
Cruoriopsis gracilis. A, erect filament with two-celled spor- OCCUr not only in Hildenbrandia, as men- 
a 40:1, fusion hatten cal of Ivo Sen “tioned by Kuckuck, but also inl Grund 
stipe. B--D, 730:1. opsis (and further in Petrocelis), and as 
in the genus Cruoriopsis 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 Cruoriopsis. 
Locality. Lb: At Lyngsodde, right opposite to Middelfart, about 15 meters, with sporangia in July. 
Cruoriella Crouan. 
1. Cruoriella codana sp. n. 
Thallus tota superficie inferiori paulum calcaria substrato adherens, rhizinis 
unicellularibus affixus, diametro 2—5 (?) cm latus, purpureus. Stratum basilare 
(hypothallium) e lobis lateraliter conjunctis e filis flabellatim ramosis compositis for- 
matum, cellulis 14—33 » longis, 9—14 4 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 7—8 y, superne 2—3(— 4) 4 lata. Anthe- 
ridia, in nematheciis specialibus aut in iisdem ac carpogonia, divisionibus trans- 
versalibus et longitudinalibus filorum orta, diametro 2 4. — Carpogonia in ramulis 
specialibus 4—5-cellularibus terminalia, membrana obliqua curvata a cellula pen- 
ultima limitata. Cellule auxiliariz in filis aliis intercalariæ. Cystocarpia e filis 
erectis paucis parce ramosis composita. Carpospore 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. de ser. t. 12, 1859, p. 289. 
