Dictyosphaeria versluysii Weber Bosse

NEW YORK BOTANICAL GARDEN
gettili
Dictyosphaeria austi’^'lS k	0
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a smaller plant (>°* ' " ' v	•> dii115 '
Fig. 9. Side view of ;
Fig. 10. Vertical section through the sailie
plant- X -
— jy(ck-j r>	'i'A"-'
- j r— j—
Detenninavit Frederik Leliaert 0s/l»/
G£/UT
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Dictyosr>haeria australis Setchell, so.nov.
Univ.Caìif.Pubi.Bot.12:79.pi.8. f.9-10. 14 My 1926.
Thallo irregulari et difformi plus minusve appianato,
pulvinuliformi, solido, varie lobato, dilute viridesoente
et glaucescente, usque ed 4 cm. et ultra diam. et 1.5 cm*
et ultra alto, firmo cartilagineoque, infero per segmenta
rhisoidea sparsa affixo; segmentis in magnitudine varia-
bilibus, 0.5 mm. usque ad 1 mm. et parum ultra diam.,P°ly-
gono-rotundis; spinis in cavitatibus cellularum e parietibus
projicientibus 60-88 yi longis, sparsissimis et rarissimis.
(Type Herb. Univ. Calif., No. 261244.)
Dictyosphaeria Versluysii Setchell, Yeg. Tutuila Is.,
p. 17 6, 1924 (not of Weber-van Bosse).
This species seems abundant in Tahiti and reasonably so
in Samoa. I referred the Samoan (Tutuilan) plant to D.
Versluysii Weber-van Bosse, noting the difference in intra-
cellular spines both as to abundance and length, since I
had no adequate material for comparison. Since that time
I have collected and studied a Dictyosphaeria at Waikiki,
Oahu, and find that it answers fiilly to Weber-van Bosse's
description. I judge, therefore, that true D. Versluysii
does occur in Hawaii and that the Samoan and Tahitian plants
are of a different sr>ecies. Our specimens do not agree with
the descriptions either of D. van Bosseae 3oerg. or of D.
intermedia Weber-van Bosse.
5224. Type collection, among low corallines and other
tufted algae, Arue Reef, June 27. 5048a. Arue Reef, May
23. (Probably common, since the solid form was frequently
noticed, even when no collections were made.)
02131743