Acrochaetium globosum Børgesen

6.	Acrochaetium globosum. nov. spec. B^rg.
\V*
Dansk Bot. Ark. 3:28. Ja 1915.
Thallus caespitosus, globosus, ad 600 u altus; in
Chaetomorpha antennina epiphyticus.
Discus basalis bene evolutus, unistratosus, e filis
repentibus ramosis, cellulis fere isodiametricis, compositus.
Pila erecta numerosa, parce ramosa, ad apicem versus attenuata
et in pseudopila producta; in basi et media parte 5-6 in
superiori parte 2-3 ja crassa, cellulis inferioribus c.14 u,
mediis c. 30 tj, superioribus 70 u vel plus longis. Chromatophorum
parietale, pyrenoide laterali instructum.
Ramuli sporangiferi numerosi, sparsi aut saepe oppositi,
1-3, rarius plures, cellulas continentes. Sporangia ovata, 7-8 u
lata et 8-10 longa.
This species has been found at the very exposed coast at Uorthäide,
St. Croix.
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