Acrochaetium gracile Børgesen

BCTAM1CAL
GARDEN
Acrochaetium gracile nov. spec. B^rg.
Pansk 301. Ark. j$: 86. ^ 1915.
Thallus caespitosus usque ad 1 mm. altus et ultra.
Pars basalis e filis repentibus, epiphyticis, plus
minus laterali ter confluentibus composita. Pila erecta,
simplicia aut paucis ramulis in superiori parte instrueta,
ramulos sporangiferos, 1-2 raro plures cellulas continentes
gerentia, ad apicem versus leniter attenuata ex cellulis
cylindricis in inferiori parte filorum 5, 5 u latis lo u
longis, in superiori fere 2 jz latis et 20 jz et ultra longis
composita. Chromatophoruin parietale, pyrenoide laterali
muniturn.
Monosporangia aut sessilia aut pedicellata aut in
ramulis posita oblonga, 14-16 u longa, 6-8 u lata.
Only found once in the Harbour of St. Thomas.
NEW YORK BOTANICAL GARDEN
02141512